CROSSBOW Manufacturer: Exidy Year: 1983 Genre: Shooter Orientation: Horizontal Conversion Class: See Pinouts DIP Switch Settings: ------------------------------------------------------------------------------- 8-position option switch @ location B1 on the audio board . 1 2 3 4 5 6 7 8 Option ------------------------------------------------------------------------------- Credits ------- Off Off Off Off 1 Coin 1 Credit Off On Off Off 2 Coins 1 Credit* On Off Off Off 3 Coins 1 Credit On On Off Off 4 Coins 1 Credit Off Off Off On 1 Coin 2 Credits Off On Off On 2 Coins 2 Credits On Off Off On 3 Coins 2 Credits On On Off On 4 Coins 2 Credits Off Off On Off 1 Coin 3 Credits Off On On Off 2 Coins 3 Credits On Off On Off 3 Coins 3 Credits On On On Off 4 Coins 3 Credits Off Off On On 1 Coin 4 Credits Off On On On 2 Coins 4 Credits On Off On On 3 Coins 4 Credits On On On On 4 Coins 4 Credits ------------------------------------------------------------------------------- 4-position option switch @ location J19 on the logic board . 1 2 3 4 Option ------------------------------------------------------------------------------- Difficulty ---------- On On Easy Off Off Normal* Off On Hard On Off Most Difficult # of Starting Characters ------------------------ Off On 2 Off Off 3* On Off 4 On On 5 * = Factory settings Modes of Operation ------------------ A. Auto Self Diagnostic Test Mode B. Manual Diagnostic Mode C. Attract Mode D. Play Mode To bypass all diagnostics, press the crossbow trigger during the power up sequence. The Auto Self Diagnostic Test Mode goes through 6 tests: 1. RAM Test 2. Screen RAM Test 3. CRC of Program ROMs 4. Checksum of Data Bank ROMs 5. Audio Test 6. EEPROM Test To access the Manual Diagnostic Mode, hold down the start button on power up. Once this mode is accessed, any of the listed test selections may be performed by using the start button to select the test and the crossbow trigger to execute the test. The Gun Alignment Test displays a crosshair (+) for gun sight alignment. Aim the gun sight at the center of the crosshair and fire the gun once. The gun sight will be aligned to the last burst. Press the start button to return to the Manual Diagnostic Mode Menu. The RAM Test tests RAMs on logic board at locations A8 and A9. The Screen RAM Test tests RAM on the logic board at these locations: B14-B21 C14-C21 D14-D21 E14-E21 The CRC Check of Program ROMs tests the ROMs on the logic board at locations A1, A2, A4, and A6. The Checksum of Data Bank ROMs tests ROMs on the logic board at these locations: B1, B3, B4 C1, C3, C4, C6, C8, C10, C11 D1, D3, D4, D6, D8, D10, D11 E1, D3, E4, E6, E8, E10, E11 The Audio Test tests the communication between the logic and audio board. The EEPROM Test tests the EEPROM that contains the High Score Table at location B11 on the logic board.