[Coco] coco sub 64k memory modes

[Phill Harvey-Smith]

Darren A wrote:
> On 8/4/09, Stephen Adolph <twospruces at gmail.com> wrote:
> Yes. The CoCo 3 has a 32K ROM.  The lower 16K contains mostly the same
> code you would find in an Extended Basic CoCo 1/2.  During startup,
> the ROM (along with the Disk Basic ROM if present) is copied to RAM
> and then the CoCo 1/2 code is patched in a few places to call new
> routines in Super Extended Color Basic.

Which of course begs the question could SECB be patched to work on a 64K 
CoCo 1/2, hardware differences aside.

Cheers.

Phill.

-- 
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !

"You can twist perceptions, but reality won't budge" -- Rush.