Post #3744041
2026-07-11 14:24 UTC
@me_@sueden.social ahhh, now the interesting thing is that there's a dump of ROMs of another variant of the monsterMac that doesn't include SCSI.
The ROMs are identical!
This begs the question - does this ROM only fix the RAM limitation, or does it actually include a SCSI driver?
Replies (1)
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@me_@sueden.social 2026-07-11 17:39
@DosFox@tech.lgbt Hm, the only addresses that the MonsterMac ROM accesses which I cannot explain are 0xfa0000 and 0xfa00{89}{08}. These are read via moveml, which doesn't make sense for a 5380. In a MacPlus, the 5380 is found at 0x580000 and in the Mac 512k SCSI extension at 0x500000. I can't find any address in this range in the ROM. Perhaps you had to upgrade to 128kB ROMs – but the addresses called by the MonsterMac ROMs only make sense with 64kB ROMs. http://www.applefool.com/se30/sites/Mac%20GUI%20SCSI%20512K.html https://github.com/SuperSVGA/MacSCSI