there's a schematic for a 37c699 test system here;
https://www.microchip.com/en-us/product/fdc37c669
from that I've tried to create a wiring diagram for a parallel to floppy interface cable;
I believe this has all the required connections but if there's some obvious errors/omissions please lmk.
Still no idea if its possible to tell the IO chip to use this interface from RISC. I'm hoping if you can then it will appear as a floppy without any further work, IE the IO will be doing the interfacing work and presenting it to adfs as a standard floppy.
I'm using stock 402 roms to boot the system.
https://www.microchip.com/en-us/product/fdc37c669
from that I've tried to create a wiring diagram for a parallel to floppy interface cable;
I believe this has all the required connections but if there's some obvious errors/omissions please lmk.
Still no idea if its possible to tell the IO chip to use this interface from RISC. I'm hoping if you can then it will appear as a floppy without any further work, IE the IO will be doing the interfacing work and presenting it to adfs as a standard floppy.
I'm using stock 402 roms to boot the system.
Statistics: Posted by grobda — Sun Nov 17, 2024 10:34 am