High Speed
1 Game Information
| Manufacturer | System | Year | Model | Produced |
|---|---|---|---|---|
| Williams | System 11 | 1985 | 541 | 17,080 |
IPDB Link (including software and schematics)
High Speed Playing Tips and Rule Sheet
2 System 11 Specific Issues
3 Game-Specific Issues
3.1 MPU Schematics Error for U21 & U22
The High Speed schematics for the sound section (page 3 of 4 of the MPU board) have some incorrect info. The error shows the signals coming from U6 (74LS74) and U7 (74LS139) going to the wrong sound ROMs. Flip-flopping the U21 & U22 chips resolves the errors. No visible revisions or notes are listed between the incorrect and correct schematics.