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GESSBS-40

GESPAC

GESSBS-40

Device Type

Mainboard

Processor

68040

Processor Speed

33MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

None

Maximum Video Memory

None

Cache

Unidentified

BIOS

Unidentified

Dimensions

160mm x 100mm

I/O Options

Serial ports (2), G-96 bus interface, I/O interface connector, XSB local expansion submodule buses (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Multi processor module

C1

Serial port 1

P4

G-96 bus interface

P1

XSB local expansion submodule bus

P5

I/O interface connector

P2

XSB local expansion submodule bus

P6

Serial port 2

P3

Reset/abort switch

P7

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

EPROM size select 64K x 16 or 128K x 16

J1

Pins 1 & 2 closed

 

EPROM size select 256K x 16

J1

Pins 2 & 3 closed

 

RTC battery disabled

J2

Pins 1 & 4 closed

 

RTC battery enabled

J2

Pins 2 & 3 closed

 

Cache enabled

J4/pins 1 & 4

Open

 

Cache disabled

J4/pins 1 & 4

Closed

 

PNMU enabled

J4/pins 2 & 3

Open

 

PNMU disabled

J4/pins 2 & 3

Closed

 

Base address select for dual ported RAM < 32MB

J5

Pins 1 & 2 closed

 

Base address select for dual ported RAM > 32MB

J5

Pins 2 & 3 closed

 

SYSCLK speed select CPU = SYSCLK

J6

Pins 1 & 2 closed

 

SYSCLK speed select CPU = SYSCLK/2

J6

Pins 2 & 3 closed

 

External cache access enabled

J7

Open

 

External cache access disabled

J7

Closed

 

Enable & SYSCLK and BGRT driven

J8

Pins 2 & 3 closed

 

Enable & SYSCLK and BGRT not driven

J8

Open

Factory configured - do not alter

P8

Unidentified

DUAL PORTED RAM-BASE ADDRESS SELECTION

Address

J9

A21

Pins 11 & 12 closed

A22

Pins 10 & 13 closed

A23

Pins 9 & 14 closed

A24

Pins 8 & 15 closed

A25

Pins 7 & 16 closed

A26

Pins 6 & 17 closed

A27

Pins 5 & 18 closed

A28

Pins 4 & 19 closed

A29

Pins 3 & 20 closed

A30

Pins 2 & 21 closed

A31

Pins 1 & 22 closed

STANDBY BATTERY POWER SELECTION

Setting

J3

From P1-29b (+Vbatt bus line)

Pin 1

To MAX696 power supply supervisor chip

Pin 2

From local battery

Pin 3

Note: Location of LEDs is unidentified.

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Red

On

Processor is in supervisor mode

LED2

Orange

On

Processor attempting to access and external module & it has not yet the owner of the G-6432 bus module

LED3

Yellow

On

GESSBS-40 is retrying an aborted cycle

LED4

Green

On

Processor is halted or during a reset operation