Anyone still following this? I figured out how to use my Digelec 804 to burn 2708 proms for my Missile Command Caberet. It was a days worth of screwing around but finally the right combination came together.
This was done on Win7x64 using RealTerm. The roms for Mame are for -04 version PCB using 2716 proms. I used Hexplorer to split the files into 1024k each. There is a dos commandline utility named bintohex.exe. Run that on your split file to create a file thats intel-hex format. Using Realterm, The file can be sent to the programmers RAM.
If anyone wants more detail I will explain better.
meistro