STB SYSTEMS, INC.
GRAPHIX PLUS
Card Type | Multi-I/O |
Video Processor | Unidentified |
Maximum Onboard Memory | 32KB DRAM |
I/O Options | SASI connector, clock/calendar, light pen port, parallel port, video port (3), RF modulator connector |
Data Bus | 8-bit ISA |
Video Types Supported | Monochrome/CGA |
Highest Resolution Supported | 640 x 350 |
Hard Drives Supported | Up to 7 SASI or SCSI devices |

CONNECTIONS | |||
Function | Label | Function | Label |
Parallel or SASI port | J1 | Light pen port | J4 |
Unidentified | J2 | Composite video out | J5 |
1.5V AA battery connector | J3 | CGA/Monochrome video out | J6 |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
| » | J1 is a parallel port | SW1/1 | Off |
J1 is a SASI port | SW1/1 | On | |
| » | Card acts as color display, parallel port address set to 278h | SW1/2 | On |
Card acts as monochrome display, parallel port address set to 3BCh | SW1/2 | Off | |
| » | Blue signal sent to monochrome display | SW1/6 | On |
Blue not signal sent to monochrome display | SW1/6 | Off | |
| » | Green signal sent to monochrome display | SW1/7 | On |
Green not signal sent to monochrome display | SW1/7 | Off | |
| » | Red signal sent to monochrome display | SW1/8 | On |
Red not signal sent to monochrome display | SW1/8 | Off | |
MONITOR TYPE | ||||
Setting | SW1/3 | SW1/4 | SW1/5 | |
| » | Color monitor | On | On | Off |
Monochrome monitor | Off | Off | On | |