2 Mar
2011
2 Mar
'11
5:06 p.m.
Richard wrote:
A neighbouring hacker space has access to some
Motorola 6805 equipment
pulls. These are 6800s with some amount of on-chip RAM, ROM and IO.
The 6805 instruction set is sort of similar to the 6800, but it
certainly isn't a 6800.
I have no idea what the ROM might contain or if you
can circumvent the
ROM with your own code in off-chip RAM.
Most if not all masked-ROM 6805 and 68HC05 parts don't provide a
documented way to use external program memory. (I say documented
because there are undocumented test modes activated by putting a
supervoltage on a pin.)
To determine whether the parts are of any use, the full part number
would be required.
Eric