Hello.
I'm trying to port an application to SDCC 2.9.0 from SDCC 2.3.8.
Compiling using the old Makefile that is included works after adding a
couple of #defines to correct some renamed registers.
The firmware causes the unit to crash upon start in what looks like memory
corruption (e.g. characters like "[" are changed to "À").
I have an old memory map that looks like this:
Direct Internal RAM:
Name Start End Size Max
---------------- -------- -------- -------- --------
REG_BANK_0 0x00 0x07 8 8
REG_BANK_1 0x08 0 8
REG_BANK_2 0x10 0 8
REG_BANK_3 0x18 0 8
BSEG_BYTES 0x20 0x20 1 16
DATA 0x21 0x62 66 128
---------------- -------- -------- -------- --------
TOTAL: 0x00 0x62 75 128
Stack starts at: 0x63 (sp set to 0x62) with 157 bytes available
Other memory:
Name Start End Size Max
---------------- -------- -------- -------- --------
INDIRECT RAM 0x80 0 128
EXTERNAL RAM 0x0000 0x07bb 1980 65536
ROM/EPROM/FLASH 0x0000 0xef90 61329 65536
This made me conclude I need the --no-pack-iram option since my map
generated by SDCC 2.9.0 is nowhere close to that.
I'm hoping to be able to use the packing functionality later but for now
I've chosen to disable it.
Adding the --no-pack-iram option makes the map look more reasonable - it's
correct in everything but the BSEG_BYTES segment is 2 bytes instead of 1.
This causes this error to arise:
?ASlink-Error-Internal memory overlap starting at 0x21.
Is there a known change needed for this kind of error?
Any help would be appreciated.
Greetings,
Christian "BC" Svensson
Codelead Systems - http://www.codelead.se
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