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| From: Richard Atkinson
Date: 1998-09-16
Subject: Re: 256K RAM expansions
|
> > Since they're HMOS 6510s, if you have a few 64s sitting around, you might
> > be able to do a little pin swapping and use one of their 6510s instead.
>
> I thought Richard was referring to the 7501/8501, which is the processor
> used in the Commodore 264 series computers. :-) The 6510 has an NMI input
> and only 6-bit I/O port, while the 7501 has an 8-bit I/O port. I don't
> remember the part number of the HMOS 6510.
Yes I was - I've already thought about converting other chips and come to the conclusion that it would have to be a 6502 (well, 6502A for 2MHz) with a lot of external hardware, and eventually gave up on the idea. Marko, I tried looking through Jameco's online catalogue and couldn't find anything by MOS or CSG. Where did the NTSC VIC-Is and VIC-IIes come from?
Also, are the any semiconductor distributors in Hungary who might have
8501s?
Richard.
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