Bally - Stern MPU $160 + $7 shipping
BALLY / STERN UNIVERSAL MPU INFORMATION
Universal combo ROM supports ALL Bally and Stern -17, -35, -133, MPU-100 and MPU-200 games. Game selection DIP switch allows for easy switching between different game ROMs. All software for Bally games is officially licensed, custom and includes free play options. All Stern games have a free play option as well. NVRAM included (no batteries needed). Extra RAM and ROM available for home brew expansion. Clock speed and and ram width selected by dip switch and/or jumper shunts(included). Setup sheet (included).
Current Version Game Selection Key PDF Document
bally.combo.2023.12.03.pdf |
Previous Versions Game Selection Key PDF Document
bally.combo.2023.11.03.pdf |
bally.combo.2023.07.22.pdf |
bally.mpu.combo.2022-09.pdf |
bally.mpu.combo.2022-08.pdf |
09.17.21.combo.pdf |
combo.06.12.21combo.pdf |
combo.09.02.20.pdf |
combo.07.02.20.pdf |
combo.06.12.20.pdf |
11-27-19.combo.pdf |
08-31-19.combo.pdf |
08-20-19.combo.pdf |
06-21-19.combo.pdf |
06-04-19.combo.pdf |
02.07.19.mpu.combo.pdf |
04.01.20.combo.pdf |
05-09-20.combo.pdf |
SEVEN DIGIT DISPLAY EXPANSION REVISION 15+ (Boards purchased September 15th 2019 and later)
Custom / Home ROM Information Texts
GAME SELECTION FOR REVISION 14+ (Boards purchased June 21st, 2019 and later)
ON is UP. Switch 1 (DIP-1) is on the left side. See the game selection key document with the same date written on the ROM chip's label for dip switch combinations to select each game.
ON is UP. Switch 1 (DIP-1) is on the left side. See the game selection key document with the same date written on the ROM chip's label for dip switch combinations to select each game.
GAME SELECTION FOR REVISION 10-13 (Combo boards purchased before June 21st, 2019)
ON is down. Switch 1 (DIP-1) is on the right side. See the game selection key document with the same date written on the ROM chip's label for dip switch combinations to select each game.
ON is down. Switch 1 (DIP-1) is on the right side. See the game selection key document with the same date written on the ROM chip's label for dip switch combinations to select each game.
RAM Width S6 setting for Bally and Stern MPU-100 Games.
Note that the jumper shunt have one leg floating and not completing a circuit. Effectively OUT. If you have a DIP switch instead of shunts all four positions should be OFF for Bally/Stern M100
Note that the jumper shunt have one leg floating and not completing a circuit. Effectively OUT. If you have a DIP switch instead of shunts all four positions should be OFF for Bally/Stern M100
RAM width setting for Stern MPU200 games.
The jumpers shunts are placed in vertically and closing all four positions. If you have a DIP switch instead of jumper shunts all four positions should be ON for Stern MPU200.
The jumpers shunts are placed in vertically and closing all four positions. If you have a DIP switch instead of jumper shunts all four positions should be ON for Stern MPU200.
Clock speed setting for Bally and Stern MPU100 Games. PCB REVISION 13+
B1 is in, S1 is OUT.
B1 is in, S1 is OUT.
Clock speed setting for Stern MPU200 Games PCB REVISION 13+
S1 is in, B1 is OUT.
S1 is in, B1 is OUT.
Clock speed setting for Bally and Stern MPU100 Games. PCB REVISION 10, 11, and 12
B1 and B2 are IN. S1 and S2 are OUT.
B1 and B2 are IN. S1 and S2 are OUT.
Clock speed setting for Stern MPU200 Games PCB REVISION 10, 11, and 12
S1 and S2 are IN. B1 and B2 are OUT.
S1 and S2 are IN. B1 and B2 are OUT.
Memory Clear
If you experience sound problems in Meteor or other Stern MPU200 games you may need to clear out the RAM memory. Boards with a combination ROM dated 08-20-19 and later have the Memory Clear software included in the combination ROM. Make sure the RAM width setting is set to Stern Games (SW6 ON / IN). Game Selection switches one to seven are set to off (down) and switch eight is set to on (up). Power up and wait until the MPU LED begins to blink. Once the LED is blinking the memory has been cleared which will resolve the sound problem in Meteor and possibly other Stern MPU200 games.
If you have a replacement MPU older than 08-20-19 or an original MPU with sound problems in MPU200 game you can use these attached ROMs to clear out your memory. See the notes file included with the ROM zip file. Contact me if you have an older replacement MPU with a sound problem and no way to burn ROMs.
ram_clear.zip |