26 Jan
2014
26 Jan
'14
3:49 p.m.
On 01/26/2014 09:49 AM, Tony Duell wrote:
True, but the 6500 and 6800 buses are very similar. Interfacing a 6522 to
a 6809 or a 6850 toa 6502 is trivial.
True to a point. But I found it a lot easier to
use a 6522 in a Z80
system than to use a Z80-SIO in a 6809 machine.
To be accurate, the 6522 is a 6500-family chip. But I take your point and also observe that it depends on the chip.
Interfacing an 8237 to a
6800 or a 6828 to an Intel CPU is not something I'd relish.
What';s the 6828? I suspect the 6829 would be very hard to use with
anything other than a 6809 (it.s the MMU for the 6809). Not a common
chip, but I have seen it.
-tony