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 |