-17 and M-100 boards cannot run 1979-1985 games without modification

The 1977-1979 -17 and Stern M-100 boards have less ROM address space than the -35. Running later games needs the trace cuts and jumpers of the 2732 conversion (Mod4).

Systems

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

Related tips

• 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
• Mod1: two 2716 EPROMs at U2 and U6 on a -17 or M-100
• Mod3: 2716 at U2 with a 9316 at U6 on a -17 or M-100
• Turning on an ATX PC supply without a motherboard
• Test EPROM: the least an MPU needs to run it
• Mod2: one 2732 at U2 on a -17 or M-100 (combines U2 and U6 code)
• Run Freedom or Night Rider on a -17 with 2716s at U1 and U6

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