UNIDENTIFED
8900 VGA MASTER (FOUR LAYER)
Card Type |
Video card |
Video Chip Set |
Unidentified |
Maximum Video Memory |
8MB DRAM |
Video Types Supported |
MGA, CGA, EGA, VGA |
Highest Resolution Supported |
1024 x 768 |
Data Bus |
16-bit ISA |
CONNECTIONS | |||
Function |
Label |
Function |
Label |
15-pin analog video port |
CN1 |
Feature connector |
CN2 |
USER CONFIGURABLE SETTINGS | |||
Function |
Label |
Position | |
DRAM clock at 40 MHz (2 DRAM) |
JP1 |
Pins 2 & 3 closed | |
DRAM clock at 48 MHz (4/8 DRAM) |
JP1 |
Pins 1 & 2 closed | |
» |
Factory configured - do not alter |
SW1/1 |
On |
» |
Factory configured - do not alter |
SW1/2 |
On |
» |
Less than 48KHz scan rate |
SW1/3 |
On |
48-49KHz scan rate |
SW1/3 |
Off | |
» |
Factory configured - do not alter |
SW1/4 |
On |
» |
Fast address decode |
SW1/5 |
Off |
Slow address decode |
SW1/5 |
On | |
» |
16 bit data path |
SW1/6 |
Off |
8 bit data path |
SW1/6 |
On |
DRAM JUMPER CONFIGURATION | |||||
Size |
JP3 |
JJ1/A |
JJ1/B |
JJ1/C |
JJ1/D |
2MB |
Pins 1 & 2, 4 & 5 |
Pins 1 & 2 |
Pins 1 & 2 |
Pins 1 & 2 |
Pins 1 & 2 |
4MB |
Pins 1 & 4, 2 & 5 |
Pins 1 & 2 |
Pins 1 & 2 |
Pins 1 & 2 |
Pins 1 & 2 |
8MB |
Pins 2 & 3, 5 & 6 |
Pins 2 & 3 |
Pins 2 & 3 |
Pins 2 & 3 |
Pins 2 & 3 |
Note: Pins indentified are in the closed position |
DRAM JUMPER CONFIGURATION | |||||
Size |
JJ1/E |
JJ1/F |
JJ1/G |
JJ1/H |
JJ1/I |
2MB |
Pins 1 & 2, 4 & 5 |
Pins 1 & 2 |
Pins 1 & 2 |
Pins 1 & 2 |
Pins 1 & 2 |
4MB |
Pins 1 & 4, 2 & 5 |
Pins 1 & 2 |
Pins 1 & 2 |
Pins 1 & 2 |
Pins 1 & 2 |
8MB |
Pins 2 & 3, 5 & 6 |
Pins 2 & 3 |
Pins 2 & 3 |
Pins 2 & 3 |
Pins 2 & 3 |
Note: Pins indentified are in the closed position |
BUS SIZE SELECTION | ||
Setting |
JP4 | |
» |
Autodetect |
Pins 2 & 3 closed |
Standard interface |
Pins 1 & 2 closed |
IRQ INTERRUPT SELECTION | ||
Setting |
J2 | |
» |
IRQ9 disabled |
Pins 2 & 3 closed |
IRQ9 enabled |
Pins 1 & 2 closed |