Action Pinball & Amusement - Level 7 MPU Board Jumper Settings

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Level 7 MPU Board Jumper Settings

NOTICE: For some very important information, please read the Technical Article Notice and Disclaimer, found on our Technical Articles Index page before performing any of the work described below. The information given below assumes you have read the Notice and Disclaimer first.

Williams Level 7 MPU boards were used in games from 1980 (Black Knight) through 1984 (early Star Light). All L7 boards used the same jumper settings for the ROM chips, and same size ROM chips EXCEPT Hyperball, and Defender pinball.

If you are swapping a board from Hyperball or Defender into any of the other Level 7 games, (or vice-versa), you will need to change ROM chip jumpers accordingly (and the ROMs, too, of course).

The map and chart below give locations and settings of the individual jumpers for the particular game you are running. If you need ROM chips for your game, be sure to check our ROM Chips Page. We have all Level 7 ROM chips in stock.

Williams Level 7 Jumper Map

The following chart indicates the setting for each individual jumper on the board, according to the game it's in.

Settings below have been used and tested and will work.
A setting of TRUE indicates jumper is set (present).
As setting of FALSE indicates jumper is not set (removed).
Jumper settings left blank ("-") are unknown, or irrelevant.
If you have any info to add to this chart, or any corrections, please e-mail us.

Jumper	ROM Chip	Description	Hyperball/Defender (2532's) 2532 in IC14,17,20. No IC26	Firepower II, BK, Pharaoh, etc. 2716 in IC14,20,26. 2532 in IC17
1		N/A
2		IRQ(1) to IRQ	FALSE
3	IC14	$6000-$67FF	FALSE	TRUE
4	IC14	$6800-$6FFF	FALSE	FALSE
5	IC14	$6000-$6FFF	TRUE	FALSE
6	IC14	Connects CS2 (pin 18) to GND	FALSE	TRUE
7		IC7 inverter bypass from PIA 1 (IC18)
8		IC7 inverter bypass from PIA 1 (IC18)
9	IC20	$7000-$77FF	FALSE	FALSE
10	IC20	$6800-$68FF	FALSE	TRUE
11	IC17	$7000-$7FFF	TRUE	TRUE
12	IC17	$7800-$7FFF	FALSE	FALSE
13	IC26	$6800-$6FFF	FALSE	FALSE
14	IC26	Gated w/All. $5000-$5FFF	TRUE	TRUE
15	IC26	$6000-$67FF	FALSE	FALSE
16	IC26	Connects A9 (pin 22) to 5vdc.	FALSE	FALSE
17	IC26	Connects A9 (pin 22) to A9.	TRUE	TRUE
18	IC26	Connects CS2 (pin 18) to 5vdc.	FALSE	FALSE
19	IC26	Connects CS2 (pin 18) to GND.	TRUE	TRUE
20	IC26	Connects Vcc(2) (pin 21) to 5vdc	TRUE	TRUE
21	IC26	Connects Vcc(2) (pin 21) to A9.	FALSE	FALSE
22	IC17	Connects A11 (pin 18) to A11.	TRUE	TRUE
23	IC17	Connects A11 (pin 18) to GND.	FALSE	FALSE
24	IC14	Connects CS2 (pin 18) to A11.	TRUE	FALSE
25		Associated with IC36 sound PIA.
26	IC20	Connects CS2 (pin 18) to GND.	FALSE	TRUE
27	IC20	Connects CS2 (pin 18) to A11.	TRUE	FALSE
28	IC20	$5000-$5FFF	TRUE	FALSE
29		IRQ/ST8 connection from PIA 5 (IC36)
30		IRQ/ST8 connection from PIA 5 (IC36)

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