kernelcrash / spectravideo-floppy-emulator Goto Github PK
View Code? Open in Web Editor NEWEmulate floppy disks on the SV-318/328
Emulate floppy disks on the SV-318/328
Hi, not sure if your still actively working on this project but here goes...
I built the project EXACTLY as per your configuration (board type, wiring, code etc) but have not had any luck getting a successful result after a week of debugging.... :-(
I get absolute no response from the SVI-328 as to detecting a disk image.
So I've added temporary UART debug code to see what is going on....
I've also tried to debug the process as the SVI-328 boots to 'diskBASIC'. I get the following results...
So, I guess I'm running out of ideas as I think I'm missing information on how the process is supposed to work. And maybe my lack of STM32 knowledge.
What should the order of operation be when the SVI boots? I imagined writing to the FD1793 register then reading it back to test if a FDC is connected....???
I'm not sure if I have a timing issue or hardware with the results I get...?
I can't get it out of my head that the /WR line is not used/connected... I assumed it mandatory for register and disk writes.
I've looked at the other Floppy emulators you've created (MSX, Electron, Dragon etc) for something I've missed but who knows...
But I now see where the code references to a PS2 keyboard and ROM images came from... cut and paste huh.. :-)
Any feedback would be appreciated.
Thanks.
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