Gespac GESSBS-40

Jumper Settings

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