UNIDENTIFIED
TVGA 8902/4/8-DRAM
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Card Type |
Video Card |
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Video Chip Set |
Unidentified |
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Maximum Video Memory |
1MB DRAM |
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Video Types Supported |
VGA |
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Highest Resolution Supported |
1024 x 768 |
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Data Bus |
16-bit ISA |
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CONNECTIONS |
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Function |
Label |
Function |
Label |
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15-pin analog video port |
CN1 |
9-pin TTL Port |
CN3 |
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Feature connector (VGA/VESA) |
CN2 |
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USER CONFIGURABLE SETTINGS |
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Function |
Label |
Position |
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Unidentified |
SW1/4 |
On |
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BUS SIZE DETECTION |
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Setting |
J2 |
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Autodetect |
Pins 2 & 3 Closed |
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Standard Interface |
Pins 1 & 2 Closed |
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Note: Orientation of J2 may vary. Check pin numbers on card. |
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BUS SIZE SELECTION |
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Setting |
SW1/6 |
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16-bit |
Off |
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8-bit |
On |
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SCAN RATE SELECTION |
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Rate |
SW1/3 |
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Less than 48Mhz |
On |
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48-49Mhz |
Off |
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MONITOR SELECT |
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Setting |
SW1/1 |
SW1/2 |
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VGA |
On |
On |
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EGA |
Off |
On |
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CGA |
On |
Off |
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MDA/Hercules |
Off |
Off |
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Note: SW1/1 & 2 affects 9-pin TTL connection. Not present on all cards. |
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INTERRUPT |
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IRQ 9 |
J1 |
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Disabled |
Pins 2 & 3 Closed |
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Enabled |
Pins 1 & 2 Closed |
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ADDRESS DECODE |
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Setting |
SW1/5 |
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Fast address decode |
Off |
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Slow address decode |
On |
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DRAM CONFIGURATION |
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Size |
Bank 0 |
Bank 1 |
Bank 2 |
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256KB |
(2) 128KB x 4 |
None |
None |
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512KB |
(2) 128KB x 4 |
(2) 128KB x 4 |
None |
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1MB |
(2) 128KB x 4 |
(2) 128KB x 4 |
(4) 128KB x 4 |
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VIDEO MEMORY JUMPER CONFIGURATION |
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Size |
JP1 |
JP2 |
J3 |
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256KB |
Open |
Closed |
Pins 1 & 2, 4 & 5 closed |
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512KB |
Open |
Closed |
Pins 1 & 4, 2 & 5 closed |
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1MB |
Closed |
Open |
Pins 2 &3, 5 & 6 closed |
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Note: JP1 &2 are jumper blocks, number of pins unidentified. Not present on all cards. Orientation of J3 may vary. |
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CLOCK SPEED |
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Setting |
J4 |
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40Mhz(2 DRAM) |
Pins 2 & 3 closed |
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48Mhz(4/8 DRAM) |
Pins 1 & 2 closed |
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Note: Exact location of J4 unidentified. Not present on all cards |
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