From: Gerrit Heitsch <>
Date: Sat, 23 Jul 2016 20:46:04 +0200
Message-ID: <>
On 07/23/2016 08:22 PM, Segher Boessenkool wrote:
> On Sat, Jul 23, 2016 at 06:29:33PM +0200, MichaƂ Pleban wrote:
>>> Next project would be a replacement 8501 since those also die easily...
>> That should be much easier, as no analog stuff (video) is needed and a
>> 6502 core is easily obtainable... Somebody should really make such
>> project :-)
> The visual6502 project has a die picture of an 8501.  From the picture
> it seems clear that both the 8500 (c64c) and 8502 (c128) used the same
> silicon, with different contacts bonded out.

You sure? The 8501 is missing Port-Bit 5. It's not only not bonded out, 
it's not present, you can't set it while the 8500 has all the port bits, 
you can set them.


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Received on 2016-07-23 19:00:54

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