Discontinued IC's

Hmmm. But will it be a problem that the knowledge of the internal specifications may be gone? I'm not a hardware engineer, so take this with a grain of salt, but as I understand it, that's one of the things that makes writing software emulators so difficult. Timing is an issue, of course, especially when the emulator runs on a multi-tasking OS with unpredictable performance. But duplicating the precise behavior of the chips (including the "undocumented" behaviors that advanced programmers used to rely upon) is even more of a challenge from what I've heard. I wish we had the advanced technology you're talking about today. It would be great to fry up some copies of the C64 and C128 hardware. Maybe even a VIC-20. But then again, it would be more important to copy some of the older, less abundant machines lest they disappear for good... - Earl Earl Evans retro(a)retrobits.com Enjoy retrocomputing today! Visit the Retrobits web site at http://www.retrobits.com