exxos's Atari, Amiga & retro forum

MSX2 mostly use the Ricoh-RP5C01 clock chip:
https://www.msx.org/wiki/Ricoh_RP-5C01

Not just for retrieving the time but for config data like screen resolution etc.

Further down the line you could emulate this using the ARM? :)

That’s exactly the plan. But the first board was a total drunk fest

terriblefire wrote: 08 Jul 2021 18:34 That’s exactly the plan. But the first board was a total drunk fest

That was pretty successful prototype!

Not sure it's any help at all, but the Omega MSX2 clone is GPL3, so may be of some assistance?
(I may be trying to teach Granny how to suck eggs here :-) )
https://github.com/skiselev/omega

Chesh

There aint no fun in copying someone elses design. Its all about the process not the end result.

You can make it better though,
like packing all glue logic into a single cpld.. :idea:

Well this one is all about me being drunk.

Any chance to buy 2x of those?

Yes but let me sort out the issues first. They need a bunch of patch wires right now. I've fired these bad boys up for the first time lately.

I may actually respin them instead of trying to continue with the rev0s.

@terriblefire I'd be happy to help out with this as well once you are ready.