LASER 8088 MAIN BOARD (VER. 2) Motherboard Settings and Configuration

LASER COMPUTER, INC.

LASER 8088 MAIN BOARD (VER. 2)

Processor
8088
Processor Speed
10MHz
Chipset
Unidentified
Maximum Onboard Memory
1664KB DRAM
BIOS
Unidentified
Dimensions
270 x 218mm
I/O Options
None
NPU Options
8087

CONNECTIONS
Purpose
Location
Purpose
Location
Speaker
J11
Power LED & keylock
J12

USER CONFIGURABLE SETTINGS
Function
Label
Position

Parity enabled
JP7
Pins 1 & 2 closed

Parity disabled
JP7
Pins 2 & 3 closed
»
Factory configured - do not alter
SW1/1
Off
»
NPU not installed
SW1/2
Off

NPU installed
SW1/2
On
»
Factory configured - do not alter
SW2/7
N/A
»
Factory configured - do not alter
SW2/8
N/A

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
P2
Bank 3
P3
256KB
(9) 41256
None
None
None
None
None
512KB
(9) 41256
(9) 41256
None
None
None
None
576KB
(9) 41256
(9) 41256
(2) 4464
(1) 4164
None
None
640KB
(9) 41256
(9) 41256
(2) 4464
(1) 4164
(2) 4464
(1) 4164
896KB
(9) 41256
(9) 41256
(2) 4464
(1) 4164
(2) 4464
(1) 4164
1152KB
(9) 41256
(9) 41256
(2) 4464
(1) 4164
(2) 4464
(1) 4164
1408KB
(9) 41256
(9) 41256
(2) 4464
(1) 4164
(2) 4464
(1) 4164
1664KB
(9) 41256
(9) 41256
(2) 4464
(1) 4164
(2) 4464
(1) 4164

DRAM CONFIGURATION
Size
Bank 4
Bank 5
Bank 6
Bank 7
256KB
None
None
None
None
512KB
None
None
None
None
576KB
None
None
None
None
640KB
None
None
None
None
896KB
(9) 4164
None
None
None
1152KB
(9) 4164
(9) 4164
None
None
1408KB
(9) 4164
(9) 4164
(9) 4164
None
1664KB
(9) 4164
(9) 4164
(9) 4164
(9) 4164

DRAM CONFIGURATION
Size
SW1/3
SW1/4
256KB
On
On
512KB
Off
On
576KB
On
Off
640KB
Off
Off
896KB
Off
Off
1152KB
Off
Off
1408KB
Off
Off
1664KB
Off
Off

EXPANDED MEMORY BANK 4 AND 5 ADDRESS
Setting
SW2/1
SW2/2
SW2/3
208h
Off
On
On
218h
On
Off
On
258h
Off
Off
On
268h
On
On
Off
2A8h
Off
On
Off
2B8h
On
Off
Off
2E8h
Off
Off
Off
Disabled
On
On
On

EXPANDED MEMORY BANK 6 AND 7 ADDRESS
Setting
SW2/4
SW2/5
SW2/6
208h
Off
On
On
218h
On
Off
On
258h
Off
Off
On
268h
On
On
Off
2A8h
Off
On
Off
2B8h
On
Off
Off
2E8h
Off
Off
Off
Disabled
On
On
On

FLOPPY DRIVE CONFIGURATION
Setting
SW1/7
SW1/8
1 drive attached
On
On
2 drives attached
Off
On
3 drives attached
On
Off
4 drives attached
Off
Off

MONITOR TYPE SELECTION
Setting
SW1/5
SW1/6
Monochrome
Off
Off
CGA, 40 x 25
Off
On
CGA, 80 x 25
On
Off
EGA or no monitor
On
On

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LASER 8088 MAIN BOARD (VER. 2) Motherboard Settings and Configuration

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Processor	8088
Processor Speed	10MHz
Chipset	Unidentified
Maximum Onboard Memory	1664KB DRAM
BIOS	Unidentified
Dimensions	270 x 218mm
I/O Options	None
NPU Options	8087

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	J11	Power LED & keylock	J12

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Parity enabled	JP7	Pins 1 & 2 closed
	Parity disabled	JP7	Pins 2 & 3 closed
»	Factory configured - do not alter	SW1/1	Off
»	NPU not installed	SW1/2	Off
	NPU installed	SW1/2	On
»	Factory configured - do not alter	SW2/7	N/A
»	Factory configured - do not alter	SW2/8	N/A

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	P2	Bank 3	P3
256KB	(9) 41256	None	None	None	None	None
512KB	(9) 41256	(9) 41256	None	None	None	None
576KB	(9) 41256	(9) 41256	(2) 4464	(1) 4164	None	None
640KB	(9) 41256	(9) 41256	(2) 4464	(1) 4164	(2) 4464	(1) 4164
896KB	(9) 41256	(9) 41256	(2) 4464	(1) 4164	(2) 4464	(1) 4164
1152KB	(9) 41256	(9) 41256	(2) 4464	(1) 4164	(2) 4464	(1) 4164
1408KB	(9) 41256	(9) 41256	(2) 4464	(1) 4164	(2) 4464	(1) 4164
1664KB	(9) 41256	(9) 41256	(2) 4464	(1) 4164	(2) 4464	(1) 4164

DRAM CONFIGURATION
Size	Bank 4	Bank 5	Bank 6	Bank 7
256KB	None	None	None	None
512KB	None	None	None	None
576KB	None	None	None	None
640KB	None	None	None	None
896KB	(9) 4164	None	None	None
1152KB	(9) 4164	(9) 4164	None	None
1408KB	(9) 4164	(9) 4164	(9) 4164	None
1664KB	(9) 4164	(9) 4164	(9) 4164	(9) 4164

DRAM CONFIGURATION
Size	SW1/3	SW1/4
256KB	On	On
512KB	Off	On
576KB	On	Off
640KB	Off	Off
896KB	Off	Off
1152KB	Off	Off
1408KB	Off	Off
1664KB	Off	Off

EXPANDED MEMORY BANK 4 AND 5 ADDRESS
Setting	SW2/1	SW2/2	SW2/3
208h	Off	On	On
218h	On	Off	On
258h	Off	Off	On
268h	On	On	Off
2A8h	Off	On	Off
2B8h	On	Off	Off
2E8h	Off	Off	Off
Disabled	On	On	On

EXPANDED MEMORY BANK 6 AND 7 ADDRESS
Setting	SW2/4	SW2/5	SW2/6
208h	Off	On	On
218h	On	Off	On
258h	Off	Off	On
268h	On	On	Off
2A8h	Off	On	Off
2B8h	On	Off	Off
2E8h	Off	Off	Off
Disabled	On	On	On

FLOPPY DRIVE CONFIGURATION
Setting	SW1/7	SW1/8
1 drive attached	On	On
2 drives attached	Off	On
3 drives attached	On	Off
4 drives attached	Off	Off

MONITOR TYPE SELECTION
Setting	SW1/5	SW1/6
Monochrome	Off	Off
CGA, 40 x 25	Off	On
CGA, 80 x 25	On	Off
EGA or no monitor	On	On