T8C video card Settings and Configuration

Category	Video
Video Types Supported	CGA/EGA/VGA/XVGA
Video Processor	Trident
Highest Resolution Supported	1280 x 1024
Data Bus Type	16-bit ISA
Memory Type	VRAM
Maximum Onboard Memory	2048KB

CONNECTIONS
Purpose	Location
15-pin analog video port	J1

EMULATION TYPE CONFIGURATION
Type		Address	JP1	JP1A
»	VGA/EGA with High Resolution	3DDh - 3DEh	Pins 1 &2 closed	Pins 1 & 2 closed
	CGA with High Resolution	3DDh - 3DEh	Pins 2 & 3 closed	Pins 2 & 3 closed
	High resolution	3DDh - 3DEh	Pins 1 & 2 closed	Pins 2 & 3 closed
	High resolution	30Dh - 30Eh	Pins 2 & 3 closed	Pins 1 & 2 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 closed	Pins 2 & 3 closed	Open
1280 x 1024	Interlaced	Pins 2 & 3 closed	Pins 1 & 2 closed	Open
1280 x 1024	Non-interlaced	Pins 2 & 3 closed	Pins 2 & 3 closed	Closed
1024 x 768	Non-interlaced	Pins 1 & 2 closed	Pins 1 & 2 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 closed	Pins 1 & 2 closed
	6	6	Pins 3 & 4 closed	Pins 3 & 4 closed
	5	5	Pins 5 & 6 closed	Pins 5 & 6 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.