Bally -17 and Stern M-100 ROM jumper settings

9316 ROMs at U2 and U6 (the usual factory setup) use E1-E2, E3-E4, E6-E7, E8-E10. 2716s at U2/U6 use the same jumpers plus the Mod1 cuts. A single 2732 at U2 uses only E6-E7 and E8-E10 plus Mod2. A 2716 at U2 with a 9316 at U6 uses E1-E2, E3-E4, E6-E7, E8-E10 plus Mod3. 2732s at U2/U6 use E1-E2, E3-E5, E6-E7, E8-E10 plus Mod4. Freedom and Night Rider (74S474 or 7461 ROMs at U1 and U2, a 2716 or 9316 at U6) use E1-E2, E3-E4, E8-E9.

Systems

• Bally MPU AS-2518-17
• Stern MPU-100

Related tips

• How to read Bally jumper charts and identify ROM types
• Why the MPU has ROM jumpers
• Get the MPU booting before you change any ROM jumpers
• Leave the ROM jumpers alone until the LED flickers
• ROM types that share a jumper setting are not interchangeable between games
• Mod4: convert a -17 or M-100 to take 2732s at U2 and U6 (runs any Bally game)
• A Stern M-200 set for 2732s runs any Bally or Stern game 1977-1985
• Checking U6 and the jumpers with the U9 VMA line

Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part Three, Clay Harrell (pinrepair.com)