EVEREX SYSTEMS, INC.
MICROENHANCER EV-659A
Category | Video |
Video Types Supported | CGA/EGA/Monochrome |
Video Processor | Unidentified |
Highest Resolution Supported | 640 x 350 |
Data Bus Type | 8-Bit ISA |
Memory Type | DRAM |
Maximum Onboard Memory | 256KB (Exact location of memory is unidentified) |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
RCA Jack | J1 | 15-pin analog video port | P2 |
RCA Jack | J2 | VGA feature connector | P3 |
VIDEO PORT ADDRESS SELECTION | ||
Address | W5 | |
» | 3xx | Pins 2 & 3 closed |
2xx | Pins 1 & 2 closed |
VIDEO EMULATION CONFIGURATION | ||||
Setting | Autoswitch | SW1/5 | SW1/6 | |
» | Hercules emulation disabled | Disabled | Off | Off |
Hercules emulation enabled | Enabled | On | On |
MONITOR TYPE CONFIGURATION | ||||||||
Type | Mode | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/7 | SW1/8 | |
» | EGA | EGA 80 x 25 | Off | On | On | Off | On | On |
EGA | CGA 80 x 25 | On | On | On | Off | On | On | |
CGA | CGA 80 x 25 | Off | Off | Off | On | On | Off | |
CGA | CGA 40 x 25 | On | Off | Off | On | On | Off | |
Monochrome | Monochrome | Off | Off | On | Off | Off | Off |
VIDEO INTERRUPT SELECTION | ||||||||
IRQ | W12/1 | W12/2 | W12/3 | W12/4 | W12/5 | W12/6 | W12/7 | |
» | Non Maskable Interrupt | Closed | Open | Open | Open | Open | Open | Open |
2 | Open | Closed | Open | Open | Open | Open | Open | |
3 | Open | Open | Closed | Open | Open | Open | Open | |
4 | Open | Open | Open | Closed | Open | Open | Open | |
5 | Open | Open | Open | Open | Closed | Open | Open | |
6 | Open | Open | Open | Open | Open | Closed | Open | |
7 | Open | Open | Open | Open | Open | Open | Closed |
INTERRUPT TYPE CONFIGURATION | ||
Type | W6 | |
» | Non Maskable | Pins 2 & 3 closed |
Normal | Pins 1 & 2 closed |
FACTORY CONFIGURED - DO NOT ALTER | |
Jumper | Position |
W8 | Pins 1 & 2 closed |
W11 | Open |