SYSDYNE CMP 400 Card Type Video card Video Chip Set Unidentified Maximum Video Memory Unidentified Video Types Supported Monochrome, CGA Highest Resolution 640 x 400 Supported Data Bus 8-bit ISA [Image] CONNECTIONS Function Label Function Label 9-pin serial port CN1 Light pen connector J1 25-pin parallel port CN2 USER CONFIGURABLE SETTINGS Function Label Position Positive horizontal sync polarity P1 Pins 1 & 2 closed Negative horizontal sync polarity P1 Pins 2 & 3 closed Positive vertical sync polarity P2 Pins 1 & 2 closed Negative vertical sync polarity P2 Pins 2 & 3 closed MONITER CONFIGURATION SELECTION Setting SW1/1 SW1/2 CGA Off Off Monochrome On Off Scan doubling Off On BASE I/O ADRESS SELECTION Setting SW1/3 SW1/4 Disabled On On LPT 1 (3BCh) Off On LPT2 (378h) On Off LPT3 (278h) Off Off