GENOA SYSTEMS CORPORATION
4850-5
|
Category |
Video |
|
Video Types Supported |
EGA |
|
Video Processor |
Unidentified |
|
Highest Resolution Supported |
800 x 600 |
|
Data Bus Type |
8-bit ISA |
|
Memory Type |
DRAM |
|
Maximum Onboard Memory |
256KB |
|
CONNECTIONS |
|||
|
Purpose |
Location |
Purpose |
Location |
|
Composite display jack |
J1 |
9-pin digital video port |
J4 |
|
Composite display jack |
J2 |
32-pin feature connector |
J5 |
|
Light pen connector |
J3 |
|
|
|
CHIPSET |
|
|
Setting |
JMP1 |
|
27128 chip installed |
Pins 1 & 2, 4 & 5 closed |
|
27256 chip installed |
Pins 2 & 3, 5 & 6 closed |
|
I/O ADDRESS |
||
|
» Address |
JMP2 |
|
|
» |
3XXh |
Pins 2 & 3 closed |
|
» |
2XXh |
Pins 1 & 2 closed |
|
MONITOR TYPE |
|
|
Setting |
JMP3 |
|
EGA |
Pins 1 & 2 closed |
|
CGA or monochrome |
Pins 2 & 3 closed |
|
PRIMARY ADAPTER SETTINGS |
||||||
|
EGA |
Mono |
CGA |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
40 x 25 text |
Secondary adapter |
N/A |
On |
Off |
Off |
On |
|
80 x 25 text |
Secondary adapter |
N/A |
Off |
Off |
Off |
On |
|
640 x 200 |
Secondary adapter |
N/A |
On |
On |
On |
Off |
|
640 x 350 |
Secondary adapter |
N/A |
Off |
On |
On |
Off |
|
Monochrome |
N/A |
Secondary adapter 40 x 25 |
On |
Off |
On |
Off |
|
Monochrome |
N/A |
Secondary adapter 80 x 25 |
Off |
Off |
On |
Off |
|
SECONDARY ADAPTER SETTINGS |
||||||
|
EGA |
Mono |
CGA |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
40 x 25 text |
Primary adapter |
N/A |
On |
On |
On |
On |
|
80 x 25 text |
Primary adapter |
N/A |
Off |
On |
On |
On |
|
640 x 200 |
Primary adapter |
N/A |
On |
Off |
On |
On |
|
640 x 350 |
Primary adapter |
N/A |
Off |
Off |
On |
On |
|
Monochrome |
N/A |
Primary adapter 40 x 25 |
On |
On |
Off |
On |
|
Monochrome |
N/A |
Primary adapter 80 x 25 |
Off |
On |
Off |
On |
|
DISPLAY MODE SELECT |
||
|
Setting |
SW1/5 |
SW1/6 |
|
Standard/advanced EGA |
On |
On |
|
CGA |
Off |
On |
|
Monochrome |
Off |
Off |
