Maketrax

PCB

Screen shots

Pinouts

Ground A 1 Ground
Ground B 2 Ground
Ground C 3 Ground
Speaker + D 4 Speaker -
NC E 5 +12v
+ve Sync F 6 NC
NC G 7 NC
NC H 8 NC
+5v I 9 +5v
P2 Down J 10 NC
P2 Up K 11 P1 Up
Start 2 L 12 P1 Down
Start 1 M 13 Coin
P1 Right N 14 NC
P1 Left O 15 Video Red
Video Blue P 16 2P Right
Video Green Q 17 2P Left
-ve Sync R 18 NC

If you are making a Jamma loom, then use the -ve sync on pin R, as most monitors appear to be set for -ve sync. The sync is taken from here, put through a 74LS04 inverter and back to pin F.

Bootlegs don't normally bother with this extra piece of circuitry, and hence only have -ve sync wired up.

Dip Switches

Adjustment 1 2 3 4 5 6 7 8*
*Factory Off On On On On Off On Off
1 Play / 2 Coins

2 Plays / 1 Coin

1 Play / 1 Coin

Free Play

Off

On

Off

On

On

Off

On

On

6 Brushes

5 Brushes

4 Brushes

3 Brushes

Off

On

Off

On

Off

Off

On

On

1st Pattern Easy

1st Pattern Hard

Off

On

Warp Hole Off

Warp Hole On

Off

On

Cocktail

Upright

Off

On

 

Switch 8 is a 'Freeze' switch, it will freeze the display with the current picture to allow for monitor adjustments / colour setup etc.