prime wrote: ↑Thu Mar 26, 2020 1:32 am
These can be loaded into the HxC software and processed into other formats.
Cheers.
Phill.
Thanks, at least I can now rule out any mis-interpretation of the floppy format. Are all discs bootable?
Took another look at the driver last night, the implementation of the memory banking looks overly complicated, and is probably now broken. The memory sub-system in MAME has improved immensely since then so should be able to simplify this and make it more readable.
Pernod70 wrote: ↑Thu Mar 26, 2020 12:02 pm
Thanks, at least I can now rule out any mis-interpretation of the floppy format. Are all discs bootable?
Took another look at the driver last night, the implementation of the memory banking looks overly complicated, and is probably now broken. The memory sub-system in MAME has improved immensely since then so should be able to simplify this and make it more readable.
The OS-9 ones should be, not sure about the C compiler one. We do know they do boot on the one real machine we know still exists.
The banking prolly is more complicated than it needs to be, I was kinda learning by example from other drivers so pretty much winging it
prime wrote: ↑Thu Mar 26, 2020 8:12 pm
The banking prolly is more complicated than it needs to be, I was kinda learning by example from other drivers so pretty much winging it
I've modernised most of the driver which has simplified the code by removing ~400 lines, but am still struggling to get the thing to boot Both CPU's hit a SYNC and wait forever, so I presume an interrupt issue somewhere.
Is there a documented disassembly of the boot rom anywhere?
I remember seeing some schematics for the keyboard and floppy sections, but can't find them anywhere. Were any other schematics found and are they archived anywhere?