Re: 74S288 Prom compatibility question

The data i/o can program that device. You need the correct algorithm disk,
which I have for the Unisite. Unfortunately I don't think my unisite disks
will work in the 2900. I'm not sure which 2900 disks I have, but I'll look
when I get time.

PROM programming is generally not the same between device manufacturers,
although reading of course, is. Which explains the symptoms you're seeing.

-Mark

On Wed, Jan 20, 2010 at 1:32 PM, js@cimmeri.com <js@cimmeri.com> wrote:

>
> Typo, sorry, Mark. The correct TI number is SN74S288N.
>
> Mark Shostak wrote:
>
>> SN74S88N? Is that the correct p/n?
>>
>> On Wed, Jan 20, 2010 at 10:35 AM, js@cimmeri.com <mailto:js@cimmeri.com>
>> <js@cimmeri.com <mailto:js@cimmeri.com>> wrote:
>>
>>
>> Hi folks. Trying to create a backup copy of a game board's
>> National Semi DM74S288N 32x8 bit prom into what I believe is the
>> equivalent chip, a TI SN74S88N. Yet, my Data I/O 2900 and Optima
>> burners -- both of which only list the Nat Semi chip -- can't seem
>> to program the TI prom. They can read it, blank checks ok, but
>> errs on burn -- all bits remain zeros.
>>
>> Anyone run into this problem before? Are the NS and TI chips not
>> identical?
>>
>> Thanks for any advice.
>>
>> John Singleton
>> Rockville, MD
>> -----------------------
>>
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Received on Wed Jan 20 15:17:23 2010