[Coco] Another ROMable NitrOS9 question
billg999 at cs.uofs.edu
billg999 at cs.uofs.edu
Mon Jan 13 15:53:23 EST 2014
> This is a good point, dropping rb_1773 will gain you some precious
> ram. Also if you don't need full screen capabilities, you can use the
> headless disks, which will drop the coco video modules altogether.
> This makes for a pretty massive gain in free space, at the cost of
> running anything that needs the CoCo console to be a VDG instead of
> just dumb terminal. Should work great for running c compiler.
>
I'll try some of this. Personally. I prefer working remotely from a
VT-terminal (usually putty but expect to want C-Kermit once I have a
Kermit server running on OS-9 again. I have lost a lot of what I did
all those years ago when the only game in town was the original OS-9.)
But, it still leaves me wondering if it would be doable to replace
the BASIC ROM with a NitrOS-9 ROM and have a purely NitrOS-9 machine.
What would it take to disable the ROM in the COCO without completely
unsoldering it? If I merely removed Vcc could I then overlay that
address space with a PROM in a cartridge? So much fun, so little time...
bill
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