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TIGA FOR THE TEXAN ET

OMNICOMP GRAPHICS CORPORATION

TIGA FOR THE TEXAN ET

Category

Video

Video Types Supported

XVGA

Video Processor

TMS34020

Highest Resolution Supported

1600 x 1280

Data Bus Type

16-bit ISA

Memory Type

DRAM/VRAM

Maximum Onboard Memory

8MB/4MB

CONNECTIONS

Purpose

Location

Purpose

Location

Red signal connector

CN1

Vertical sync connector

CN5

Green signal connector

CN2

Frequency connector

CN6

Blue signal connector

CN3

VGA pass through connector

CN7

Horizontal sync connector

CN4

Serial port(s) daughter-board connector

CN8

BASE I/O ADDRESS SELECTION

Address

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

300h

Off

Off

On

On

On

On

 

200h

Off

On

On

On

On

On

 

210h

Off

On

On

On

On

Off

 

220h

Off

On

On

On

Off

On

 

230h

Off

On

On

On

Off

Off

 

240h

Off

On

On

Off

On

Off

 

3B0h

Off

Off

Off

On

Off

Off

 

3C0h

Off

Off

Off

Off

On

On

 

3D0h

Off

Off

Off

Off

On

Off

 

3E0h

Off

Off

Off

Off

Off

On

 

3F0h

Off

Off

Off

Off

Off

Off

Note: A total of 32 base address settings are available. The jumpers are a binary representation of the decimal memory addresses. Switch SW2/1 is the Most Significant Bit and switch SW2/6 is the Least Significant Bit. The switches have the following decimal values: switch SW2/1=512, SW2/2=256, SW2/3=128,SW2/4=64, SW2/5=32, SW2/6=16. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

VGA PASS THROUGH CONFIGURATION

Setting

SW2/7

Enabled

Off

 

Disabled

On

Note: If the VGA pass through connector is not connected to the board in the system, switch SW2/7 must be turned On.

SYNC ON GREEN CONFIGURATION

Setting

SW2/8

Disabled

On

Enabled

Off

SELF TEST & DEMONSTRATION CONFIGURATION

Setting

SW1

SW3/1

Enabled

Press

On

Disabled

Only press one time

Off

POWER UP RESOLUTION CONFIGURATION

Setting

SW3/2

SW3/3

SW3/4

640 x 512 color stereoscopic

Off

Off

Off

1024 x 960 interlaced Nucolor

On

Off

Off

1024 x 1024 mono stereoscopic

Off

On

Off

640 x 480 Nucolor

On

On

Off

1280 x 1024 60Hz

Off

Off

On

1600 x 1280 60Hz

On

Off

On

EEPROM

On

On

On

Note: Stereoscopic and Nucolor modes refer to the Tektronix Stereoscopic and NuColor monitors.

DRAM MEMORY SELECTION

Setting

J3

JP1

1MB or 2MB DRAM

Open

Pins 1 & 2 closed

 

4MB or 8MB DRAM

Closed

Pins 2 & 3 closed

EEPROM PROGRAMMING CONFIGURATION

Setting

JP7

+12V

Pins 2 & 3 closed

 

+5V

Pins 1 & 2 closed

EEPROM POWER UP CONFIGURATION

Setting

JP8

Write protected

Pins 1 & 2 closed

 

Not write protected

Pins 2 & 3 closed

1 & 2 MBIT EEPROM DEVICES CONFIGURATION

Setting

JP10

Enabled

Pins 1 & 2 closed

 

Disabled

Pins 2 & 3 closed

BUS TYPE SELECTION

Type

J1

16-bit

Closed

 

8-bit

Open

VPU CONFIGURATION

Setting

JP2

TMS34020 not halted

Open

 

TMS34020 halted

Closed

INTERRUPT SELECTION

IRQ

JP3

JP4

JP5

Disabled

Open

Open

Open

 

2/9

Pins 2 & 3 closed

Open

Open

 

5

Pins 1 & 2 closed

Open

Open

 

10

Open

Pins 2 & 3 closed

Open

 

11

Open

Pins 1 & 2 closed

Open

 

14

Open

Open

Pins 2 & 3 closed

 

15

Open

Open

Pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

1MB

(1) 256K x 36

2MB

(1) 512K x 36

4MB

(1) 1M x 36

8MB

(1) 2M x 36

VRAM CONFIGURATION

Note: 2MB of the 4MB of VRAM on board is located on the back of the board.

FACTORY CONFIGURED - DO NOT ALTER

Jumper

Position

J2

Open

JP9

Open

DIAGNOSTIC LED(S)

LED1 Color

LED1 Status

LED2 Color

LED2 Status

Condition

Green

On

Red

On

DRAM or serial port test initiated

Green

On

Red

Off

VRAM test initiated

Green

Off

Red

Off

RAMDAC or FPU test initiated

Green

Off

Red

On

GSP test initiated

Green

Blinking

Red

Off

Test has passed

Green

Off

Red

Blinking

Test has failed