Programming EPROM with 8-bitclassics board

[Coolcrab]

Hi all,

 

I'm trying to program an 2732 eprom with a dataman 48. I loaded a testrom (pacman) and put the chip in and started the atari but nothing happens. Is there something specific you need to do to load the ROM property onto the eprom?

[tep392]

Did the eprom verify ok when you programmed it? Are you sure your using the correct type of cartridge for that eprom?

[tep392]

Also, what is the brand and full p/n for the 2732 you are using?

[Coolcrab]

I'm using a M2732A M2732A-2F1 EPROMs ST DIP-24 and this board https://www.8bitclassics.com/homebrew-supplies/Atari-2600-Blank-2k-4k-PCB-Homebrew.html

 

i tried several roms and burned it with buffer disabled. I also emailed the seller, but they did not know.

[tep392]

Check that programming voltage is set to 21V and duration should be 50ms/byte. It will take about 3 1/2 minutes to program if set correctly. Also check you have chip oriented correctly in the board. Is the board facing the right direction in the 2600? Might also be a good idea to post the binary you are using so we can check it is ok.

[Coolcrab]

Not sure if I am allowed to link to this, but here goes:

 

http://romhustler.net/rom/atari2600/pac-man-1981-atari

 

I also tried this one with the same effect.

http://www.mr-atari.com/defyocas/

 

I can't reach the programmer until Monday, but I'll try that for sure!

[Pioneer4x4]

Did the eprom verify ok when you programmed it? Are you sure your using the correct type of cartridge for that eprom?

 

That is the first thing you should check, re-read the chip after you program it, and compare to the original file.