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 |
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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 |