Re: Reading ROMs

They do not make bipolar proms any more. you can find them on ebay sometimes some functions can be emulated by fast pals. but not code storage. Old arcade games use them for all sorts of things. some old arcade game repair sites also sell the ICs

RE: Reading ROMs

Jay, Mike, John, Thanks for the helpful information. It just dawned onto me that these were "write once" PROMs, not modern EEPROMs. Duh. So you get one shot at doing it right... The Data I/Os on ebay seem to be quite a bit more than $100 right now, I'll keep looking. I guess none of the modern

RE: Reading ROMs

List of blank for 21MX and microcode : That would be very usefull. Thanks in advance --- L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast. https://www.avast.com/antivirus

RE: Reading ROMs

On Thu, 3 Sep 2015, Jay West wrote: Marc wrote HP 1000. Not only the standard 24 pin ROMs but the small 14 or 16 pin bootloader ROMs that Jay showed me at VCF. What would be a good ROM programmer that could read and write these of older HP equipment ROMs? --- The Data I/O 29B

Re: Reading ROMs

On 09/03/2015 4:56 AM, Vlad Stamate wrote: While I was trying to read the ROM in my 9121 for Eric Smith I found out that my Wellon VP-280 could not do it (it could not recognize it and only read FF FF FF FF). I could use it however to dump the ROM of an IBM PS2 that I cannot boot anymore (so it

Reading ROMs

While I was trying to read the ROM in my 9121 for Eric Smith I found out that my Wellon VP-280 could not do it (it could not recognize it and only read FF FF FF FF). I could use it however to dump the ROM of an IBM PS2 that I cannot boot anymore (so it is not entirely useless). So I am asking

RE: Reading ROMs

Marc wrote HP 1000. Not only the standard 24 pin ROMs but the small 14 or 16 pin bootloader ROMs that Jay showed me at VCF. What would be a good ROM programmer that could read and write these of older HP equipment ROMs? --- The Data I/O 29B works perfectly for those old fusable link

Re: Reading ROMs

On Thu, Sep 3, 2015 at 6:57 PM, Vlad Stamate wrote: > I am not sure about the part number it was under the sticker with the > ROM version (which btw was 09121 15510 REV A) and I put it back into > the unit. The PCA silkscreen diagram in the service manual shows F2364,

Re: Reading ROMs

You may know all of this but just in case ...Assuming you have reader that can detect ROM type and compatible with ROM you are trying to read. May be jumper change required? For example my Logical Systems Shooter has a different jumper thay must be installed for each EPROM type. Bill Degnan

RE: Reading ROMs

but the small 14 or 16 pin bootloader ROMs that Jay showed me at VCF. What would be a good ROM programmer that could read and write these of older HP equipment ROMs? Marc --- From: Vlad Stamate <vlad.stam...@gmail.com> Subject: Reading ROMs While I was trying to read the ROM