exxos's Atari, Amiga & retro forum

I had more time today, I could complete the parallel port, YM2149 and the audio circuit after it.

I always follow your work with interest. Thanks for the updates. :)

Thanks for watching :)

sporniket wrote: 01 May 2024 17:31 Thanks for watching :)

It's my privilege ! :)

Done MIDI and IKBD circuits up to their ACIAs.

Most remaining signals are those specific to the CPU/MMU/GLUE (essentially upper address lines, bus arbitration and control) and reset circuits.

This is great stuff! My favourite model Atari :)

I discovered about that version a few years ago, and I found it "cute" because of that reduced size, compared to the "regular" ST that I know that feels more bulky. I admit that I started this conversion partly because of this "cuteness" feeling.

And I discovered about this model a few years ago only because I had no prior knowledge on Atari or other brands except the Amstrad CPC of the neighbour and the Thomson MO5 at school when I got my first home computer that was the Atari STe. At that time, the "atari magazine" that were published were already talking about the Atari TT that was presented and about to be available.

cool project. There is something nice about a short ST.
Are you considering any improvements? For example, fewer RAM and ROM chips?

Hello , this projet aims toward replication only. Ideally I want to build one at some point to validate the work, and i plan to use ram extensions. I tried hard to keep the same relative positionning of ram chips, and did the same for the rom chips.

About remaking with improvements, my fancies are leaning toward a very compact remake of the Ste. I am a bit stuck because of the great number of components and the routing, but i recently thought that i could stay within the surface budget in exchange of a bit of stacking. Anyway, it's still a daydreaming, low priority project of mine for now.

But it's a *great* dream...! :)