Jason Stevens <[email protected]> wrote: > Hmm what is weird is that when I look at the disktab from any BSD and > compare it to the table in pdp11_rq.c they don't agree....
Doesn't matter for MSCP disks. They're "just a bunch of blocks" and accessed by block number. Unless the device driver has to do host-side bad block replacement, which you do not want to get into, and do not have to get into in the emulator world! > While looking up the RP06 I find this: > > pdp11_rp.c > > #define RP06_DTYPE 3 > #define RP06_SECT 22 > #define RP06_SURF 19 > #define RP06_CYL 815 > #define RP06_DEV 020022 > #define RP06_SIZE (RP06_SECT * RP06_SURF * RP06_CYL * RP_NUMWD) > > and in the disktab: > > rp06|RP06|DEC RP06:\ > :ty=removable:ns#22:nt#19:nc#815:\ > > Which do agree.... For SMD/Massbus drives, the physical geometry does matter to the driver. I/O requests are issued based on physical track/cylinder/sector. Tim. _______________________________________________ Simh mailing list [email protected] http://mailman.trailing-edge.com/mailman/listinfo/simh
