Re: 74S288 Prom compatibility question

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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
> <mailto:js@cimmeri.com> <js@cimmeri.com <mailto: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> <mailto:js@cimmeri.com
> <mailto:js@cimmeri.com>> <js@cimmeri.com
> <mailto:js@cimmeri.com> <mailto: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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