INFORMTECH INTERNATIONAL, INC.
IT-VGACL VER. 1.0
|
Category |
Video |
|
Video Types Supported |
VGA |
|
Video Processor |
Cirrus Logic, Inc. |
|
Highest Resolution Supported |
1280 x 1024 |
|
Data Bus Type |
VESA local bus |
|
Memory Type |
VRAM |
|
Maximum Onboard Memory |
2MB |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
15-pin analog video port |
CN1 |
Terminating resistor |
R26 |
|
Terminating resistor |
R25 | ||
|
INTERRUPT REQUEST | ||
|
IRQ9 |
JP11 | |
|
Disabled |
Open | |
|
Enabled |
Closed | |
|
BS16 | ||
|
BS16 |
JP12 | |
|
Enabled |
Closed | |
|
Disabled |
Open | |
|
OEL | ||
|
OEL |
JP13 | |
|
Enabled |
Closed | |
|
Disabled |
Open | |
|
OEH | ||
|
OEH |
JP14 | |
|
Enabled |
Closed | |
|
Disabled |
Open | |
|
CLOCK SPEED | |||
|
Setting |
JP15 |
JP16 | |
|
50.11MHz |
Open |
Open | |
|
37.58MHz |
Closed |
Closed | |
|
42.16MHz |
Closed |
Open | |
|
44.74MHz |
Open |
Closed | |
|
VIDEO MEMORY CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 | |
|
1MB |
(8) 256K x 4 VRAM |
NONE | |
|
2MB |
(8) 256K x 4 VRAM |
(2) 512K x 8 VRAM | |
|
Note:If terminating resistors R25 and R26 are oriented horizontally, then the 512K x 8 VRAM chips are Bank 0. | |||
|
MISCELLANEOUS TECHNICAL NOTES |
|
Some cards may have a zero-wait state jumper installed. The Pins-Closed configuration enables the zero-wait state. |