Phoenix Centuri, 1980 --------------------- There are two boards to the Phoenix boardset, the logic and the CPU board. OVG15D (Logic board, 12 EPROMs) OVG15U (CPU board, 8085 CPU, 8 pin DIP switch, 36 pin edge connector) CPU Edge Connector: SOLDER SIDE | PARTS SIDE -------------------------------- Gnd | A | 1 | Gnd Gnd | B | 2 | Gnd COM | C | 3 | Gnd | D | 4 | Speaker +12V | E | 5 | +12V (Notch cut here) | F | 6 | (Notch cut here) | H | 7 | | J | 8 | +5V | K | 9 | +5V | L | 10| P1 Shield | M | 11| P2 Shield 2 Player Start | N | 12| 1 Player Start | P | 13| Coin P1 Right | R | 14| P1 Fire P1 Left | S | 15| Red Blue | T | 16| P2 Right Green | U | 17| P2 Left Sync | V | 18| P2 Fire Switches 1 and 2 control the number of times the player may have his spaceship destroyed before the game is over. The following truth table lists these switch settings: SWITCH 1: SWITCH 2: NUMBER OF SPACESHIPS: --------- --------- --------------------- OFF OFF 6 ON OFF 5 OFF ON 4 ON ON 3 Switches 3 and 4 control the score at which one or two free spaceships are awarded according to the follow- ing truth table: FIRST FREE SECOND FREE SWITCH 3: SWITCH 4: SHIP SCORE: SHIP SCORE: --------- --------- ----------- ----------- OFF OFF 6,000 60,000 ON OFF 5,000 50,000 OFF ON 4,000 40,000 ON ON 3,000 30,000 Switches 5, 6, 7 and 8 are factory adjustments, and must be left in OFF position. Addendum: Switch 8 controls whether the screen inverts for a cocktail cabinet. Turn it ON if you want cocktail.