What about the 6532 that I have seen in the Commodore printers? how do the
the pin-outs compare to 6522 or 6526 or even the 8520 (Amiga CIA) or 8521
(C128)? - do these match the 6821?
--Ray
On Tue, Feb 26, 2002, at 10:08 AM, Ethan Dicks wrote:
>
> --- Nicolas Welte <welte@chemie.uni-konstanz.de> wrote:
> > You're right of course, the 6529 is not a common chip at all, I only
> used it
> > as an example how small a single port I/O chip should be. The 6821 would
> be a
> > good choice...
>
> If anyone is interested, I have a number of NOS (New Old Stock) 6821 chips
> from when I used to work at a company that built 68000-based intellegent
> serial
>
> They work great on an 8MHz 68000, but I presume they are 1Mhz or 2Mhz
>
> ISTR they are drop-in replacement for some uses of the 6520, but I haven't
> done it myself. Maybe I should check the pinout and if good, stick one in
> a PET and see how the IEEE and keyboard work.
>
--
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|Raymond Computer 651-642-9891 fax | to the small for |
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|USA Amiga - Commodore | -- James Thurber -- |
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