MICROFIELD GRAPHICS, INC. T8 Category Video Video Types Supported XVGA Video Processor Trident Highest Resolution 1280 x 1024 Supported Data Bus Type 16-bit ISA Memory Type VRAM Maximum Onboard Memory 2048KB [Image] CONNECTIONS Purpose Location 15-pin video port J1 EMULATION TYPE CONFIGURATION Type Address JP1 JP1A » VGA/EGA with High 3DDh - 3DEh Pins 1 &2 Pins 1 &2 Resolution closed closed CGA with High 3DDh - 3DEh Pins 2 & 3 Pins 2 & 3 Resolution closed closed High resolution 3DDh - 3DEh Pins 1 &2 Pins 2 & 3 closed closed High resolution 30Dh - 30Eh Pins 2 & 3 Pins 1 &2 closed closed Note: Address setting 30Dh - 30Eh requires special device driver software for operation. VIDEO FREQUENCY CONFIGURATION Frequency Mode S1 S2 S7 » 1280 x Non-interlaced Pins 1 & 2 Pins 1 & 2 Open 1024 closed closed 1280 x Interlaced Pins 1 & 2 Pins 2 & 3 Open 1024 closed closed 1280 x Non-interlaced Pins 1 & 2 Pins 1 & 2 Closed 1024* closed closed 1024 x Non-interlaced Pins 2 & 3 Pins 2 & 3 Closed 768* closed closed Note: * This is an alternate setting which requires an optional dual crystal and 512K microcode EPROM. ALTERNATE I/O PORT ADDRESS SELECTION Address S6 » 3xx Pins 2 & 3 closed 1xx Pins 1 &2 closed DMA CHANNEL SELECTION DRQ Dack S5 S8 » 7 7 Pins 1 & 2 Pins 1 & 2 closed closed 6 6 Pins 3 & 4 Pins 3 & 4 closed closed 5 5 Pins 5 & 6 Pins 5 & 6 closed closed VIDEO INTERRUPT SELECTION IRQ S3 » 2/9 Pins 1 & 2 closed 10 Pins 3 & 4 closed 11 Pins 5 & 6 closed 12 Pins 7 & 8 closed Disabled Pins 9 & 10 closed