Re: C64A 82S100 JED?

From: Frank Wolf <webmaster_at_frank-wolf.org>
Date: Sun, 24 May 2020 20:49:56 +0200
Message-ID: <d3e74640-d63c-d3a5-63df-8e2dc998d90c_at_frank-wolf.org>
I'm talking about our *switchable* PLA replacement which has 4 
additional inputs to select
WHICH of the contained PLA equations should be active:

https://hackaday.io/project/169048-pladvanced-all-in-one-pla-replacement

In order to test it we use an adapter which maps the additional 4 input 
signals to the
upper address lines of a 27C800 EPROM.

/Frank


On 24.05.2020 20:24, Gerrit Heitsch wrote:
> On 5/24/20 7:59 PM, Frank Wolf wrote:
>> In order to check a PLA replacement you could reading it like a 512kB 
>> EPROM (with an adapter for PLS100N)
>> and compare it against a genuine PLA readout (or the file written by 
>> the small
>> program on zimmers).
>>
>> We use the same method to check if all PLA variants in our switchable 
>> PLA replacement
>> are correct: We use an adapter to read it like a 27C800 EPROM and 
>> compare it against
>> a correct file.
>
> I would expect that to be a 27512 EPROM since the PLA has 16 inputs 
> and 8 outputs.
>
>  Gerrit
>
>
>
Received on 2020-05-30 01:51:07

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