This should compile now, also diff'ed against r842.

diff --git a/82802ab.c b/82802ab.c
index 58d3467..dfe81e8 100644
--- a/82802ab.c
+++ b/82802ab.c
@@ -90,32 +90,32 @@ uint8_t wait_82802ab(chipaddr bios)
        return status;
 }
 
-int erase_82802ab_block(struct flashchip *flash, int offset)
+int erase_82802ab_block(struct flashchip *flash, unsigned int page, unsigned 
int pagesize)
 {
-       chipaddr bios = flash->virtual_memory + offset;
-       chipaddr wrprotect = flash->virtual_registers + offset + 2;
+       chipaddr bios = flash->virtual_memory;
+       chipaddr wrprotect = flash->virtual_registers + page + 2;
        uint8_t status;
 
        // clear status register
-       chip_writeb(0x50, bios);
+       chip_writeb(0x50, bios + page);
 
        // clear write protect
        chip_writeb(0, wrprotect);
 
        // now start it
-       chip_writeb(0x20, bios);
-       chip_writeb(0xd0, bios);
+       chip_writeb(0x20, bios + page);
+       chip_writeb(0xd0, bios + page);
        programmer_delay(10);
 
        // now let's see what the register is
-       status = wait_82802ab(flash->virtual_memory);
+       status = wait_82802ab(bios);
        print_82802ab_status(status);
 
-       if (check_erased_range(flash, offset, flash->page_size)) {
+       if (check_erased_range(flash, page, pagesize)) {
                fprintf(stderr, "ERASE FAILED!\n");
                return -1;
        }
-       printf("DONE BLOCK 0x%x\n", offset);
+       printf("DONE BLOCK 0x%x\n", page);
 
        return 0;
 }
@@ -128,7 +128,7 @@ int erase_82802ab(struct flashchip *flash)
        printf("total_size is %d; flash->page_size is %d\n",
               total_size, flash->page_size);
        for (i = 0; i < total_size; i += flash->page_size)
-               if (erase_82802ab_block(flash, i)) {
+               if (erase_82802ab_block(flash, i, flash->page_size)) {
                        fprintf(stderr, "ERASE FAILED!\n");
                        return -1;
                }
@@ -182,7 +182,7 @@ int write_82802ab(struct flashchip *flash, uint8_t *buf)
                }
 
                /* erase block by block and write block by block; this is the 
most secure way */
-               if (erase_82802ab_block(flash, i * page_size)) {
+               if (erase_82802ab_block(flash, i * page_size, page_size)) {
                        fprintf(stderr, "ERASE FAILED!\n");
                        return -1;
                }
diff --git a/chipdrivers.h b/chipdrivers.h
index af22abf..e2c698b 100644
--- a/chipdrivers.h
+++ b/chipdrivers.h
@@ -56,6 +56,7 @@ int spi_aai_write(struct flashchip *flash, uint8_t *buf);
 uint8_t wait_82802ab(chipaddr bios);
 int probe_82802ab(struct flashchip *flash);
 int erase_82802ab(struct flashchip *flash);
+int erase_82802ab_block(struct flashchip *flash, unsigned int page, unsigned 
int pagesize);
 int write_82802ab(struct flashchip *flash, uint8_t *buf);
 
 /* am29f040b.c */
diff --git a/flashchips.c b/flashchips.c
index 913e030..aee2429 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -283,7 +283,22 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_jedec,
                .probe_timing   = TIMING_FIXME, 
-               .erase          = erase_chip_jedec,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {128 * 1024, 1},
+                                       {96 * 1024, 1},
+                                       {8 * 1024, 2},
+                                       {16 * 1024, 1},
+                               },
+                               .block_erase = erase_sector_jedec,
+                       }, {
+                               .eraseblocks = { {256 * 1024, 1} },
+                               .block_erase = erase_chip_block_jedec,
+                       }
+               },
                .write          = write_jedec,
                .read           = read_memmapped,
        },
@@ -1140,18 +1155,68 @@ struct flashchip flashchips[] = {
                .read           = read_memmapped,
        },
 
+       /* The next two chip definitions have top/bottom boot blocks, but has no
+       device differenciation between the two */
        {
                .vendor         = "AMIC",
-               .name           = "A25L40P",
+               .name           = "A25L40PT",
                .bustype        = CHIP_BUSTYPE_SPI,
                .manufacture_id = AMIC_ID,
                .model_id       = AMIC_A25L40P,
                .total_size     = 512,
                .page_size      = 256,
-               .tested         = TEST_OK_PREW,
+               .tested         = TEST_OK_PRW,
                .probe          = probe_spi_rdid4,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {64 * 1024, 7},
+                                       {32 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {256 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "AMIC",
+               .name           = "A25L40PU",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = AMIC_ID,
+               .model_id       = AMIC_A25L40P,
+               .total_size     = 512,
+               .page_size      = 256,
+               .tested         = TEST_OK_PRW,
+               .probe          = probe_spi_rdid4,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 1},
+                                       {64 * 1024, 7},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {256 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1253,10 +1318,20 @@ struct flashchip flashchips[] = {
                .total_size     = 512,
                .page_size      = 64 * 1024,
                .feature_bits   = FEATURE_REGISTERMAP,
-               .tested         = TEST_OK_PREW,
+               .tested         = TEST_OK_PRW,
                .probe          = probe_jedec,
                .probe_timing   = TIMING_ZERO,  /* routine is wrapper to 
probe_jedec (pm49fl00x.c) */
-               .erase          = erase_49fl00x,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {64 * 1024, 8} },
+                               .block_erase = erase_block_jedec,
+                       }, {
+                               .eraseblocks = { {512 * 1024, 1} },
+                               .block_erase = erase_chip_block_jedec,
+                       }
+               },
                .write          = write_49fl00x,
                .read           = read_memmapped,
        },
@@ -1272,7 +1347,22 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_jedec,
                .probe_timing   = TIMING_ZERO,  /* Datasheet has no timing info 
specified */
-               .erase          = erase_chip_jedec,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { 
+                                       {128 * 1024, 1},
+                                       {96 * 1024, 1},
+                                       {8 * 1024, 2},
+                                       {16 * 1024, 1},
+                               },
+                               .block_erase = erase_sector_jedec,
+                       }, {
+                               .eraseblocks = { {256 * 1024, 1} },
+                               .block_erase = erase_chip_block_jedec,
+                       }
+               },
                .write          = write_49f002,
                .read           = read_memmapped,
        },
@@ -1288,7 +1378,53 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 1},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "Eon",
+               .name           = "EN25B05T",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = EON_ID_NOPREFIX,
+               .model_id       = EN_25B05,
+               .total_size     = 64,
+               .page_size      = 256,
+               .tested         = TEST_UNTESTED,
+               .probe          = probe_spi_rdid,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {32 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1304,7 +1440,53 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 3},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {128 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "Eon",
+               .name           = "EN25B10T",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = EON_ID_NOPREFIX,
+               .model_id       = EN_25B10,
+               .total_size     = 128,
+               .page_size      = 256,
+               .tested         = TEST_UNTESTED,
+               .probe          = probe_spi_rdid,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {32 * 1024, 3},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {128 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1320,7 +1502,55 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 1},
+                                       {64 * 1024, 3}
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {256 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "Eon",
+               .name           = "EN25B20T",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = EON_ID_NOPREFIX,
+               .model_id       = EN_25B20,
+               .total_size     = 256,
+               .page_size      = 256,
+               .tested         = TEST_UNTESTED,
+               .probe          = probe_spi_rdid,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {64 * 1024, 3},
+                                       {32 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {256 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1336,7 +1566,55 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 1},
+                                       {64 * 1024, 7}
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {512 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "Eon",
+               .name           = "EN25B40T",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = EON_ID_NOPREFIX,
+               .model_id       = EN_25B40,
+               .total_size     = 512,
+               .page_size      = 256,
+               .tested         = TEST_UNTESTED,
+               .probe          = probe_spi_rdid,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {64 * 1024, 7},
+                                       {32 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {512 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1352,7 +1630,55 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 1},
+                                       {64 * 1024, 15}
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "Eon",
+               .name           = "EN25B80T",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = EON_ID_NOPREFIX,
+               .model_id       = EN_25B80,
+               .total_size     = 1024,
+               .page_size      = 256,
+               .tested         = TEST_UNTESTED,
+               .probe          = probe_spi_rdid,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {64 * 1024, 15},
+                                       {32 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1368,7 +1694,55 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 1},
+                                       {64 * 1024, 31},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {2 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "Eon",
+               .name           = "EN25B16T",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = EON_ID_NOPREFIX,
+               .model_id       = EN_25B16,
+               .total_size     = 2048,
+               .page_size      = 256,
+               .tested         = TEST_UNTESTED,
+               .probe          = probe_spi_rdid,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {64 * 1024, 31},
+                                       {32 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {2 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1384,7 +1758,55 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 1},
+                                       {64 * 1024, 63},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {4 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "Eon",
+               .name           = "EN25B32T",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = EON_ID_NOPREFIX,
+               .model_id       = EN_25B32,
+               .total_size     = 4096,
+               .page_size      = 256,
+               .tested         = TEST_UNTESTED,
+               .probe          = probe_spi_rdid,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {64 * 1024, 63},
+                                       {32 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {4 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1400,7 +1822,55 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {32 * 1024, 1},
+                                       {64 * 1024, 127},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {8 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
+               .write          = spi_chip_write_256,
+               .read           = spi_chip_read,
+       },
+
+       {
+               .vendor         = "Eon",
+               .name           = "EN25B64T",
+               .bustype        = CHIP_BUSTYPE_SPI,
+               .manufacture_id = EON_ID_NOPREFIX,
+               .model_id       = EN_25B64,
+               .total_size     = 8192,
+               .page_size      = 256,
+               .tested         = TEST_UNTESTED,
+               .probe          = probe_spi_rdid,
+               .probe_timing   = TIMING_ZERO,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = {
+                                       {64 * 1024, 127},
+                                       {32 * 1024, 1},
+                                       {16 * 1024, 1},
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                               },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {8 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1416,7 +1886,26 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 512} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 32} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 32} },
+                               .block_erase = spi_block_erase_52,
+                       }, {
+                               .eraseblocks = { {2 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {2 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1432,7 +1921,26 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 16} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {32 * 1024, 2} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {32 * 1024, 2} },
+                               .block_erase = spi_block_erase_52,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1448,7 +1956,26 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 32} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {32 * 1024, 4} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {32 * 1024, 4} },
+                               .block_erase = spi_block_erase_52,
+                       }, {
+                               .eraseblocks = { {128 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {128 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1464,7 +1991,26 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 64} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 4} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 4} },
+                               .block_erase = spi_block_erase_52,
+                       }, {
+                               .eraseblocks = { {256 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {256 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1484,16 +2030,16 @@ struct flashchip flashchips[] = {
                .block_erasers  =
                {
                        {
-                               .eraseblocks = { {4 * 1024, 2048} },
+                               .eraseblocks = { {4 * 1024, 128} },
                                .block_erase = spi_block_erase_20,
                        }, {
-                               .eraseblocks = { {4 * 1024, 2048} },
+                               .eraseblocks = { {64 * 1024, 8} },
                                .block_erase = spi_block_erase_d8,
                        }, {
-                               .eraseblocks = { {8 * 1024 * 1024, 1} },
+                               .eraseblocks = { {512 * 1024, 1} },
                                .block_erase = spi_block_erase_60,
                        }, {
-                               .eraseblocks = { {8 * 1024 * 1024, 1} },
+                               .eraseblocks = { {512 * 1024, 1} },
                                .block_erase = spi_block_erase_c7,
                        },
                },
@@ -1512,7 +2058,23 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 256} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 16} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1528,7 +2090,23 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 512} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 32} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {2 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {2 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1544,7 +2122,23 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 1024} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 64} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {4 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {4 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -1743,10 +2337,21 @@ struct flashchip flashchips[] = {
                .model_id       = P28F001BXB,
                .total_size     = 128,
                .page_size      = 128 * 1024, /* 8k + 2x4k + 112k */
-               .tested         = TEST_BAD_ERASE|TEST_BAD_WRITE,
+               .tested         = TEST_BAD_WRITE,
                .probe          = probe_jedec,
                .probe_timing   = TIMING_ZERO,  /* Datasheet has no timing info 
specified */
                .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { 
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                                       {112 * 1024, 1},
+                               },
+                               .block_erase = erase_82802ab_block,
+                       },
+               },
                .write          = NULL,
                .read           = read_memmapped,
        },
@@ -1759,10 +2364,21 @@ struct flashchip flashchips[] = {
                .model_id       = P28F001BXT,
                .total_size     = 128,
                .page_size      = 128 * 1024, /* 112k + 2x4k + 8k */
-               .tested         = TEST_OK_PR|TEST_BAD_ERASE|TEST_BAD_WRITE,
+               .tested         = TEST_OK_PR|TEST_BAD_WRITE,
                .probe          = probe_jedec,
                .probe_timing   = TIMING_ZERO,  /* Datasheet has no timing info 
specified */
                .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { 
+                                       {112 * 1024, 1},
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                               },
+                               .block_erase = erase_82802ab_block,
+                       },
+               },
                .write          = NULL,
                .read           = read_memmapped,
        },
@@ -1775,10 +2391,17 @@ struct flashchip flashchips[] = {
                .model_id       = I_82802AB,
                .total_size     = 512,
                .page_size      = 64 * 1024,
-               .tested         = TEST_OK_PREW,
+               .tested         = TEST_OK_PRW,
                .probe          = probe_82802ab,
                .probe_timing   = TIMING_IGNORED, /* routine does not use 
probe_timing (82802ab.c) */
-               .erase          = erase_82802ab,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {64 * 1024, 8} },
+                               .block_erase = erase_82802ab_block,
+                       },
+               },
                .write          = write_82802ab,
                .read           = read_memmapped,
        },
@@ -1791,10 +2414,17 @@ struct flashchip flashchips[] = {
                .model_id       = I_82802AC,
                .total_size     = 1024,
                .page_size      = 64 * 1024,
-               .tested         = TEST_OK_PREW,
+               .tested         = TEST_OK_PRW,
                .probe          = probe_82802ab,
                .probe_timing   = TIMING_IGNORED, /* routine does not use 
probe_timing (82802ab.c) */
-               .erase          = erase_82802ab,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {64 * 1024, 16} },
+                               .block_erase = erase_82802ab_block,
+                       },
+               },
                .write          = write_82802ab,
                .read           = read_memmapped,
        },
@@ -2017,7 +2647,23 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 512} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 32} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {2 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {2 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -2065,7 +2711,23 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 1024} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 64} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {4 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {4 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -2081,7 +2743,23 @@ struct flashchip flashchips[] = {
                .tested         = TEST_OK_PROBE,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {64 * 1024, 128} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 128} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {8 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {8 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -2097,7 +2775,23 @@ struct flashchip flashchips[] = {
                .tested         = TEST_UNTESTED,
                .probe          = probe_spi_rdid,
                .probe_timing   = TIMING_ZERO,
-               .erase          = spi_chip_erase_60_c7,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {4 * 1024, 4096} },
+                               .block_erase = spi_block_erase_20,
+                       }, {
+                               .eraseblocks = { {64 * 1024, 256} },
+                               .block_erase = spi_block_erase_d8,
+                       }, {
+                               .eraseblocks = { {16 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_60,
+                       }, {
+                               .eraseblocks = { {16 * 1024 * 1024, 1} },
+                               .block_erase = spi_block_erase_c7,
+                       }
+               },
                .write          = spi_chip_write_256,
                .read           = spi_chip_read,
        },
@@ -2110,10 +2804,26 @@ struct flashchip flashchips[] = {
                .model_id       = MX_29F001B,
                .total_size     = 128,
                .page_size      = 32 * 1024,
-               .tested         = TEST_OK_PRE,
+               .tested         = TEST_OK_PR,
                .probe          = probe_29f002,
                .probe_timing   = TIMING_IGNORED, /* routine don't use 
probe_timing (mx29f002.c) */
-               .erase          = erase_29f002,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { 
+                                       {8 * 1024, 1},
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 2},
+                                       {32 * 1024, 1},
+                                       {64 * 1024, 1},
+                               },
+                               .block_erase = erase_sector_29f002,
+                       }, {
+                               .eraseblocks = { {128 * 1024, 1} },
+                               .block_erase = erase_chip_29f002,
+                       }
+               },
                .write          = write_jedec_1,
                .read           = read_memmapped,
        },
@@ -2126,10 +2836,26 @@ struct flashchip flashchips[] = {
                .model_id       = MX_29F001T,
                .total_size     = 128,
                .page_size      = 32 * 1024,
-               .tested         = TEST_OK_PRE,
+               .tested         = TEST_OK_PR,
                .probe          = probe_29f002,
                .probe_timing   = TIMING_IGNORED, /* routine don't use 
probe_timing (mx29f002.c) */
-               .erase          = erase_29f002,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { 
+                                       {64 * 1024, 1},
+                                       {32 * 1024, 1},
+                                       {8 * 1024, 2},
+                                       {4 * 1024, 2},
+                                       {8 * 1024, 1},
+                               },
+                               .block_erase = erase_sector_29f002,
+                       }, {
+                               .eraseblocks = { {128 * 1024, 1} },
+                               .block_erase = erase_chip_29f002,
+                       }
+               },
                .write          = write_jedec_1,
                .read           = read_memmapped,
        },
@@ -2207,7 +2933,17 @@ struct flashchip flashchips[] = {
                .tested         = TEST_OK_PR,
                .probe          = probe_29f002,
                .probe_timing   = TIMING_IGNORED, /* routine don't use 
probe_timing (mx29f002.c) */
-               .erase          = erase_29f002,
+               .erase          = NULL,
+               .block_erasers  =
+               {
+                       {
+                               .eraseblocks = { {64 * 1024, 8}, },
+                               .block_erase = erase_sector_29f002,
+                       }, {
+                               .eraseblocks = { {512 * 1024, 1} },
+                               .block_erase = erase_chip_29f002,
+                       },
+               },
                .write          = write_jedec_1,
                .read           = read_memmapped,
        },
diff --git a/flashchips.h b/flashchips.h
index 684b8b9..19ff745 100644
--- a/flashchips.h
+++ b/flashchips.h
@@ -164,13 +164,29 @@
 #define EON_ID                 0x7F1C  /* EON Silicon Devices */
 #define EON_ID_NOPREFIX                0x1C    /* EON, missing 0x7F prefix */
 #define EN_25B05               0x2010  /* Same as P05, 2^19 kbit or 2^16 kByte 
*/
+#define EN_25B05T              0x25
+#define EN_25B05B              0x95
 #define EN_25B10               0x2011  /* Same as P10 */
+#define EN_25B10T              0x40
+#define EN_25B10B              0x30
 #define EN_25B20               0x2012  /* Same as P20 */
+#define EN_25B20T              0x41
+#define EN_25B20B              0x31
 #define EN_25B40               0x2013  /* Same as P40 */
+#define EN_25B40T              0x42
+#define EN_25B40B              0x32
 #define EN_25B80               0x2014  /* Same as P80 */
+#define EN_25B80T              0x43
+#define EN_25B80B              0x33
 #define EN_25B16               0x2015  /* Same as P16 */
+#define EN_25B16T              0x44
+#define EN_25B16B              0x34
 #define EN_25B32               0x2016  /* Same as P32 */
+#define EN_25B32T              0x45
+#define EN_25B32B              0x35
 #define EN_25B64               0x2017  /* Same as P64 */
+#define EN_25B64T              0x46
+#define EN_25B64B              0x36
 #define EN_25D16               0x3015
 #define EN_25F05               0x3110
 #define EN_25F10               0x3111
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