Looking for an emprom simulator/emulator

txmarsh

I have a use for an eprom simulator. Preferably one that can simulate 24 pin eproms like the 2716. I believe some of these were made by parallax way back in the day (circa 1990). If someone has one collecting dust I would gladly make a deal to take it off your hands. I'm sure I could re-invent the wheel but I would rather just find one... got enough projects on the list as is! : )

Thanks!
Tim

RobotWorkshop

Hello Tim,

Parallax used to have one a long time ago. It is a useful gadget. I haven't seen any for sale in a while but there are lots of examples and schematics online that you could use to build one if you can't find any for sale. I'd also keep watching on ebay since something will eventually show there...

Robert

txmarsh

Thanks Robert... yes, I should just make one but I'm trying very hard not to start another project when so many are already in the works. I'm bidding on a unit on ebay but I'm not very hopeful that it will come with all necessary components. My hope is that someone who actually knows what these things are can find it in their heart to let one go that is just collecting dust... that way I have a chance of finding a complete unit (e.g., one with all the cables, software... maybe even a manual!)
tim

RobotWorkshop

I can certainly relate about not wanting to start yet another project until some of the existing ones get wrapped up! I'm finally getting to work on my "Someday" projects and want to catch up on some of those before taking on too many more new ones.....

Several years ago I bought a custom robot project based on some 80C31 boards which came with one of the old Parallax EPROM emulators. It was parallel based but was missing the cable. Since there was no docs for the pinout I had to figure it out. Luckily the software driver (on a 5.25" disk) has the source so I knew what PC pins to use. From there I was able to trace out the circuit on the emulator board and make a cable. I'm still using it with that robot project so I can't let that one go.

If you manage to find one of the Parallax EPROM emulators I can certainly help with the specs on the cable if that is missing and as long as Parallax is ok then I can help with the driver as well.

Robert

txmarsh

Thanks Robert... I will keep that in mind in case I come across a partial parallax unit.

txmarsh

Hi Robert... I sent you a PM but not sure if it went through. If you don't receive it please let me know.
Thanks!
Tim
marsh at utlaw dot net

RobotWorkshop

In case anyone else is missing the driver for this (Parallax Rom Emulator) I've attached it here.

txmarsh

Thanks!!!

Tim