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EVERGRAPHICS PLUS EV-231A

EVEREX SYSTEMS, INC.

EVERGRAPHICS PLUS EV-231A

Category

Video

Video Types Supported

Monochrome

Video Processor

6845

Highest Resolution Supported

720 x 348

Data Bus Type

8-bit ISA

Memory Type

DRAM

Maximum Onboard Memory

64KB (Exact location of memory is unidentified)

CONNECTIONS

Purpose

Location

Purpose

Location

Monochrome video port

PA5

Parallel port

PC5

COLUMN (132) DISPLAY CONFIGURATION

Setting

JA2

Enabled

Pins 1 & 2 closed

 

Disabled

Pins 2 & 3 closed

PARALLEL PORT INTERRUPT SELECTION

IRQ

JG6

7

Pins 2 & 3 closed

 

5

Pins 1 & 2 closed

PARALLEL PORT CONFIGURATION

LPT

Address

JC7

1

3BCh - 3BEh

Pins 1 & 2 closed

 

2

378h - 37Fh

Pins 3 & 4 closed

 

3

278h - 27Fh

Pins 1 & 2, 3 & 4 closed

 

Disabled

N/A

Open

FACTORY CONFIGURED - DO NOT ALTER

Jumper

Position

JB1

Closed

JB5

Open

JC7B

Open