TWINHEAD INTERNATIONAL CORP. CT-8090 Card Type Video card Video Processor Unidentified Maximum Onboard Memory 256KB DRAM I/O Options Feature connector, light pen port Data Bus 8-bit ISA Video Types Supported EGA Highest Resolution 640 x 350 Supported [Image] CONNECTIONS Function Label Function Label Unidentified J1 Feature connector J4 Unidentified J2 Light pen port P2 9-pin EGA port J3 MONITOR TYPE (EGA PRIMARY) Primary Secondary P1 SW1/1 SW1/2 SW1/3 SW1/4 CGA, 40 x Monochrome Pins 2 & On Off Off On 25 3 closed CGA, 80 x Monochrome Pins 2 & Off Off Off On 25 3 closed EGA, 40 x Monochrome Pins 1 & On On On Off 25 2 closed EGA, 80 x Monochrome Pins 1 & Off On On Off 25 2 closed Monochrome CGA, 40 x Pins 2 & On Off On Off 25 3 closed Monochrome CGA, 80 x Pins 2 & Off Off On Off 25 3 closed MONITOR TYPE (EGA SECONDARY) Primary Secondary P1 SW1/1 SW1/2 SW1/3 SW1/4 Monochrome CGA, 40 x Pins 2 & On On On On 25 3 closed Monochrome CGA, 80 x Pins 2 & Off On On On 25 3 closed Monochrome EGA, 40 x Pins 1 & On Off On On 25 2 closed Monochrome EGA, 80 x Pins 1 & Off Off On On 25 2 closed CGA, 40 x Monochrome Pins 2 & On On Off On 25 3 closed CGA, 80 x Monochrome Pins 2 & Off On Off On 25 3 closed