Re: 74S288 Prom compatibility question

I recall having similar problems with my Stag eclipse. Unfortunately the TI
chip wasn't supported, and I wasn't able to find an equivalent under the
Stag device list. I'm sure they've updated it by now. But like Mark said,
they are meant to be read the same, just not always written the same.

The problem I have, is that I have about 4 tempest aux boards that need
proms, and they are kinda pricey $6 when you need 6-7 proms per board. It's
cheaper to just find an Aux board with them.

Unless someone knows of a cheaper source for proms.

Kevin

On Wed, Jan 20, 2010 at 2:49 PM, John Robertson <pinball@telus.net> wrote:

> There is a Data I/O mail list on Yahoo:
>
> http://groups.yahoo.com/group/Data_IO_EPROM/join
>
> John :-#)#
>
>
> Mark Shostak wrote:
>
> 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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>
>
>
> --
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
> www.flippers.com
> "Old pinballers never die, they just flip out"
>
>

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Received on Wed Jan 20 16:47:07 2010