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MICRO ENHANCER EV-657B (VER.1.0)

EVEREX SYSTEMS, INC.

MICRO ENHANCER EV-657B (VER.1.0)

Card Type

Video card

Video Chip Set

Unidentified

Highest Resolution Supported

720 x 348

Maximum Video Memory

256 KB

Data Bus

8-bit ISA

Video Types Supported

EGA

CONNECTIONS

Function

Label

Function

Label

RCA jack

J1

9-pin digital video port

J3

RCA jack

J2

Feature connector

J4

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

W1

Pins 2 & 3 closed

I/O port address selected at 3XX

W3

Pins 2 & 3 closed

 

I/O port address selected at 2XX

W3

Pins 1 & 2 closed

Factory configured - do not alter

W4

N/A

Factory configured - do not alter

W7

Pins 1 & 2 closed

Non-Maskable Interrupt selected (NMI)

W10

Pins 1 & 2 closed

 

Interrupt request selected (IRQ)

W10

Pins 2 & 3 closed

CRTC Vertical interrupt enabled

W12/G

Closed

 

CRTC Vertical interrupt disabled

W12/G

Open

Operation in PC-XT slot 8 disabled

W13

Open

 

Operation in PC-XT slot 8 enabled

W13

Closed

Emulation disabled

SW1/5

Off

 

Emulation enabled

SW1/5

On

Factory configured - do not alter

SW1/6

Off

INTERRUPT SELECTION

Setting

W12/A

W12/B

W12/C

W12/D

W12/E

W12/F

2

Open

Open

Open

Open

Open

Closed

3

Closed

Open

Open

Open

Open

Open

4

Open

Closed

Open

Open

Open

Open

5

Open

Open

Closed

Open

Open

Open

6

Open

Open

Open

Closed

Open

Open

7

Open

Open

Open

Open

Closed

Open

BOOT-UP MODE SELECTION

Monitor

Mode & Format

SW1/1

SW1/2

SW1/3

SW1/4

SW1/7

SW1/8

Enhanced

EGA 80x25

Off

On

On

Off

On

On

 

Enhanced

Color 80x25

On

On

On

Off

On

On

 

Color

Color 80x25

Off

Off

Off

On

On

Off

 

Color

Color 40x25

On

Off

Off

On

On

Off

 

Monochrome

Monochrome

Off

Off

On

Off

Off

Off