Sound board assembly project
The DEF-ROM project is a place to archive sound code and audio samples from System 4-7 sound ROMs.
Examining and experimenting with the 2716/2532 ROM code from Williams Electronics sound boards for games from 1979 to early-mid 1980s
ROM STATE
source merged
- Pinball Sound ROM 1 : Flash. System 4-6. 1979. 3 Oscillator Sound, Single Oscillator Sound and Delta-F Delta-A Routine.
- Pinball Sound ROM 15 : Defender. System 7. 1980. Organ, GWave and Vari synth routines
in progress
- Joust : Video ROM 4. 1982. Walsh Function Sound Machine
- Blaster : ROM 18. 1983
- Hyperball : ROM 8. 1981. Flipperless
- Rat Race : 1983. 10 made, non-production
- Thunderball : 1982. 10 made, non-production, with Speech ROMs
- Firepower : ROM 6. 1979/80, speech ROMs
NOTES
Workspace for the WiLL-i-ROMS Heathkit mod project at https://akm.net.au/will-i-roms/mods.html including mp3 sound player.
Testing is done on this ET-3400 emulator fork : https://github.com/kaputnikGo/et3400-emu
Disassembler archived here: https://www.oocities.org/pclareuk/DASMx/
Photo of the current hardware setup of ET-3400, version 2 PIA breakout board and a Williams Electronics system 7 sound board
