MICROFIELD GRAPHICS, INC. T8C Category Video Video Types Supported CGA/EGA/VGA/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 analog 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. ALTERNATE I/O PORT ADDRESS Address S6 » 3xx Pins 1 & 2 closed 1xx Pins 2 & 3 closed BIOS SIZE SELECT Size J10 16KB Pins 1 & 2 closed 32KB Pins 2 & 3 closed VIDEO FREQUENCY SETTINGS Frequency Mode S1 S2 S7 1280 x 1024 Non-interlaced Pins 2 & 3 Pins 2 & 3 Open closed closed 1280 x 1024 Interlaced Pins 2 & 3 Pins 1 & 2 Open closed closed 1280 x 1024 Non-interlaced Pins 2 & 3 Pins 2 & 3 Closed closed closed 1024 x 768 Non-interlaced Pins 1 & 2 Pins 1 & 2 Closed closed closed Note: The last two settings require an optional dual crystal and 512KB microcode EPROM. DMA CHANNEL SELECT 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 SELECT IRQ S3 » IRQ10 Pins 3 & 4 closed IRQ9 Pins 1 & 2 closed IRQ11 Pins 5 & 6 closed IRQ12 Pins 7 & 8 closed Disabled Pins 9 & 10 closed MONITOR CONNECTOR SENSE Connector Sense J8 J9 » Disabled Pins 1 & 2 closed Pins 1 & 2 closed Enabled Pins 2 & 3 closed Pins 2 & 3 closed Note: An optional microcode EPROM must be installed before Connector Sense can be enabled.