- Home Page
- Game Parts & Supplies
- Game Service & Repair
- Games for Sale
- Ordering Info
- Technical Articles
- Contact Us
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.
CONTACTING US: (Please Read)
- Parts & Supplies: Free free to call or e-mail us if you have any questions about parts that we sell which are mentioned in any of the Technical Articles on our site.
- Technical Help & Questions:
- E-mail and Phone Help: We do not provide any technical help by phone or e-mail, unless you bought your game directly from our shop. If you did not, we cannot help you- please do not contact us. We simply do not have the time or resources to provide technical assistance by e-mail or phone for games that did not come directly from our shop. Instead, please see the section below on "Do It Yourself" for further help.
- Pinball Repair: If you have a game that you need serviced or repaired, please see our Game Service & Repair page for further info.
- Do-It-Yourself: For information on working on your own game, you can browse online repair guides such as www.pinrepair.com, www.homepinballrepair.com, and
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.
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|| |
|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)|| || |
|14||IC26||Gated w/All. $5000-$5FFF||TRUE||TRUE|
|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|
|29|| ||IRQ/ST8 connection from PIA 5 (IC36)|| || |
|30|| ||IRQ/ST8 connection from PIA 5 (IC36)|| || |
Back to Top