Glenn,
I have a stash of 1702As. I can probably let you have a couple.
Joe
At 07:13 AM 4/13/01 -0400, you wrote:
>I've been working with someone who has an old 8080-based single board
>computer he's trying to get to work. We're investigating several
>possible problems but it's starting to look like there's a problem with
>the EPROM. I have the ROM code he needs and will be checking out the
>EPROMS, but we may be faced with a need to reprogram one or both of
>these. They're the old 256 byte 1702A Intel chips (ceramic). I've only
>programmed the 27xx series but have read that the 1702's are "really
>difficult" to program. Was wondering if folks in this group could
>comment on how to proceed if/when we decide we need to reprogram one of
>these. Are there more modern plug compatible alternatives? We may also
>need to replace one or both - any sources known other than eBay?
>thanks.
>
>p.s. FYI, the computer here is the "MMD-1", an old 8080
>trainer/breadboarding box. here's a picture i found on the web:
>
>http://online.sfsu.edu/~hl/c.E&L-MMD1.html
>
>
>- glenn
>Attachment Converted: "C:\ATTACH\grobert1.vcf"
>
Received on Sat Apr 14 2001 - 02:35:27 BST