Re: PLA equations for the 1551 drive's cart

From: Didier Derny <didier_at_aida.org>
Date: Sun, 23 Feb 2025 09:48:07 +0100
Message-ID: <4427f921-655e-4d9b-953a-655983c3599f_at_aida.org>
the 82S100 / PLS100N
you can check the device list here:
https://uk.dataman.com/pages/dataman-48pro2-resources?geo-redirection=UK
this programmer program mny chips 82S100 / PLS100N and a lot of old prom

sometimes it is necessary to build an adapter and program as if it was
another chip and change the parameters
that's how I program the 74S471 in a 74S472 socket with an adapter and
limiting the range

eventually  you can contact dataman support to see if therre is another
chip compatible
they told me to use the 74S472 mode to program the 74S471


the adapters they are selling are quite expensive but there is a
document explaining how to build the adapters



Le 23/02/2025 à 09:19, Francesco Messineo a écrit :
> On Sun, Feb 23, 2025 at 9:16 AM didier derny <didier_at_aida.org> wrote:
>>
>> I program them with a dataman 48 pro 2 with external power supply and an adapter
> the fairchild 93459? That's interesting. Does it support the ic
> algorithm? I know for sure it's not compatible with the 82S100
> programming, but I haven't found any good reference to the real
> algorithm (and programming voltages are also different). Do you have a
> schematic?
> Thanks
>
>> Le 23 févr. 2025, à 09:11, Francesco Messineo <francesco.messineo_at_gmail.com> a écrit:
>>> On Sat, Feb 22, 2025 at 10:54 PM <silverdr_at_srebrnysen.com> wrote:
>>>
>>>>>   93459 blank PLAs are easier to find (last time I've checked) but I
>>>>>   don't have any programmer that can handle them and the only known
>>>>>   programmer that supports them (at least for what I know) is rare and
>>>>>   expensive for those of us living in EU.
>>>>
>>>>   What programmer is able to handle them?
>>>
>>> Data I/O Unisite
>>>
>>> Frank IZ8DWF
>>>
Received on 2025-02-23 10:00:43

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