VGA GRAPHICS ADAPTER video card Settings and Configuration
UNIDENTIFIED
VGA GRAPHICS ADAPTER
Category | Video |
Video Types Supported | XVGA |
Video Processor | Trident TVGA 8900 |
Highest Resolution Supported | 1024 x768 |
Data Bus Type | 16-bit ISA |
Memory Type | DRAM |
Maximum Onboard Memory | 2MB |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
15-pin analog video port | CN1 | 9-pin TTL port | CN3 |
VGA feature connector | CN2 | ||
INTERRUPT | ||
| IRQ9 | J1 | |
| » | Disabled | Pins 2 & 3 closed |
| Enabled | Pins 1 & 2 closed | |
MONITOR SELECT | ||
Setting | SW1/A | SW1/B |
VBA | On | On |
EGA | Off | On |
CGA | On | Off |
MDA/Hercules | Off | Off |
Note:SW1/A & B affects 9-pin TTL connection. Not present on all cards. | ||
REFRESH RATE | |
Rate | SW1/C |
Less than 48MHz | On |
48-49MHz | Off |
ADDRESS DECODE | ||
| Setting | SW1/E | |
| » | Fast address decode | Off |
| Slow address decode | On | |
8/16 BUS SELECT | ||
| Setting | SW1/F | |
| » | 16-bit | Off |
| 8-bit | On | |
BUS SIZE DETECTION | |
Setting | J2 |
Autodetect | Pins 2 & 3 closed |
Standard interface | Pins 1 & 2 closed |
Note: J2 orientation varies. Check pin numbers on card. | |
CLOCK SPEED | ||
| Setting | J4 | |
| » | 40MHz(512KB) | Pins 2 & 3 closed |
| 48Mhz(1 & 2MB) | Pins 1 & 2 closed | |
Note: Location of J4 unidentified. Not present on all cards. | ||
DRAM SIZE | |||
Size | JP1 | JP2 | J3 |
512KB | Open | Closed | Pins 1 & 2, 4 & 5 closed |
1MB | Open | Closed | Pins 1 & 4, 2 & 5 closed |
2MB | Closed | Open | Pins 2 & 3, 5 & 6 closed |
Note: JP1 & 2 are jumper blocks, number of pins unidentified. Not present on all cards. Orientation of J3 unidentified | |||
DRAM CONFIGURATION | |||
Size | Bank 0 | Bank 1 | Bank 2 |
512KB | (2)256KB x 4 | None | None |
1MB | (2)256KB x 4 | (2)256KB x 4 | None |
2MB | (2)256KB x 4 | (2)256KB x 4 | (4)256KB x 4 |
Note: DRAM not configurable on all cards. | |||
FACTORY CONFIGURED SETTINGS | |
Switch | Position |
SW1/D | On |
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