[cctalk] Re: Apple 1

On 8/17/23 17:40, ben via cctalk wrote: I grabbed one and manuals as a freebie at Wescon, I think. I built it onto an S100 board (PMOS-TTL level translation will add lots of parts). I got it going, and then, I thought "now what?" Eventually I repurposed the prototype board. The novelty of a 16-bit CPU wasn't worth the effort. The instruction set wasn't all that great and the limitation of a 10-level stack was a buzz kill. The GI CP1600 was far easier to work with--I sold that CPU chip to a collector a few years ago. I think NSC re-cast the PACE as the NMOS INS8900, with TTL-level I/O. The PACE itself was a re-cast of the NSC IMP-16 chipset. --Chuck