Fast 27c128's a problem for Pocket Pro?

[Craig Moates]

Peter - I share that fear. What I have is Cypress Semiconductor
CY27C128-70WC-9650-119203-608764. Any clarification would be
appreciated. -Craig

-----Original Message-----
From: Peter Gargano <peter at ntserver.techedge.com.au>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Date: Monday, November 22, 1999 9:57 PM
Subject: Re: Fast 27c128's a problem for Pocket Pro?


>> Craig Moates wrote:
>
>> The zero check yields 'found 00, looking for FF'. The program verify
>> also does not check out. Haven't tried to see if programmed chips work
yet.
>
>Sounds like you don't have the EPROM part you think you have
>What are those numbers you say look like 27c128 70 nS parts.?
>
>
>
>On the theme of programmers, I've been playing with a 3 chip
>design that'll do all the common chips (2732..27512). I have
>the 2 chip reader working (parallel port I/F, uses 74HC404
>and 74LS257, programmer will add just a 74xx374 and perhaps a
>transistor) - I'm interested if others have seen an existing
>low chip count burner (parallel port), or if anyone wants to
>share their own low chip count designs with me. I intend
>making it freely available when it's working 100%.
>
>regards,
>--
>Peter Gargano