Re: FPGATED

From: Gerrit Heitsch <*gerrit_at_laosinh.s.bawue.de*> Date: Sat, 23 Jul 2016 20:46:04 +0200 Message-ID: <5793BB6C.70207@laosinh.s.bawue.de> · gerrit_at_laosinh.s.bawue.de

On 07/23/2016 08:22 PM, Segher Boessenkool wrote:
> On Sat, Jul 23, 2016 at 06:29:33PM +0200, Michał 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.

  Gerrit

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