This was a little personal experiement to see if I could combine the usefulness of BlueSCSI and its HD images with the PC , and have similar HD image capability with old PCs. In the PDF of the NCR 53C400 technical document there was a rough outline for a memory mapped SCSI card that was popular in the XT PC days. I though this would be a nice jumpting off point to see if this could be done. Even keeping in mind that BlueSCSI may not work with the NCR 53C400 it would still be a cool experiment. While obsolete the 53C400 can still be got from surplus suppliers and I got a few before I started.
The SCSI BIOS is just a cosmetically modifed existing BIOS from other similar memory mapped NCR53C400 cards.
Results are mixed, it boots real drives fine but my fears were realised with the blueSCSI , while it formats and I can use the drive, on reboot the STM32 hangs with both lights on when attempting to boot. More investigation is required.
My files are here
github.com
The SCSI BIOS is just a cosmetically modifed existing BIOS from other similar memory mapped NCR53C400 cards.
Results are mixed, it boots real drives fine but my fears were realised with the blueSCSI , while it formats and I can use the drive, on reboot the STM32 hangs with both lights on when attempting to boot. More investigation is required.
My files are here
GitHub - retrotheory/8bit_ISA_SCSI_with_STM32: ISA SCSI card with BIOS and spot of software SCSI emulation with STM32
ISA SCSI card with BIOS and spot of software SCSI emulation with STM32 - retrotheory/8bit_ISA_SCSI_with_STM32
github.com
