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![]() Hi, I just wanna mention that comparing to this foto
https://www.schach-computer.info/wik...150Platine.jpg my device has different platine (see attachment): R65c02-4Mhz (vs 3), newer NEC controller produced 1989 (vs 1988), faster RAM - 12ms (vs 15) and probably faster ROM (marks: AMI 9002MAO; YO1GH; C12E U3). Also there's an empty slot for additional chip (EGR or RAM?) |
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Re: Radio Shack 2150
Oscillator itself is still 3Mhz but I suppose that due to the fact, that all chips are newer it would be possible to replace oscillator by 6Mhz one without re-soldering ROM / RAM / CPU (I hope it would work this way)
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AW: Radio Shack 2150
It's a Rockwell CPU specified with 4 MHz. It will run with 5 I think. 6 is possible, but not very likely. Give it a try. RAM is fast enough.
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