OMNICOMP GRAPHICS CORPORATION TIGA FOR THE TEXAN ET Category Video Video Types Supported XVGA Video Processor TMS34020 Highest Resolution 1600 x 1280 Supported Data Bus Type 16-bit ISA Memory Type DRAM/VRAM Maximum Onboard Memory 8MB/4MB [Image] CONNECTIONS Purpose Location Purpose Location Red signal CN1 Vertical sync CN5 connector connector Green signal CN2 Frequency connector CN6 connector Blue signal CN3 VGA pass through CN7 connector connector Horizontal sync CN4 Serial port(s) CN8 connector daughter-board connector 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 Off Off Off stereoscopic 1024 x 960 interlaced On Off Off Nucolor 1024 x 1024 mono Off On Off stereoscopic 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 Open Open closed 5 Pins 1 & 2 Open Open closed 10 Open Pins 2 & 3 Open closed 11 Open Pins 1 & 2 Open closed 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 LED1 Status LED2 LED2 Status Condition Color Color 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