28 May
2016
28 May
'16
12:55 p.m.
On May 28, 2016, at 1:31 PM, Eric Smith <spacewar
at gmail.com> wrote:
The replica-1 uses a propellor chip for video and static ram so I don't think it's
that critical to timing.
On Sat, May 28, 2016 at 5:31 AM, Corey Cohen
<applecorey at optonline.net> wrote:
I can't wait to buy one!!! I have a spare Replica-1 just waiting to hook up to a
Monster 6502.
It doesn't run at full speed. It presently runs in the tens to low
hundreds of kHz. If a Replica-1 can be run slower than normal, that
might work. Other common 6502-based micros, such as the Apple II or
Atari 400/800 will not work at low speed due to inherent timing
requirements related to video generation and DRAM refresh.
Just need to wire up a single step switch and
this thing will be awesome!!!
If you wire single-stepping using the RDY line, that should work,
though it will only single-step read cycles, not write cycles.
You can't single-step the actual clock because it is dynamic logic.