SUPER TURBO-XT Motherboard Settings and Configuration

Processor	8088 (exact location is unknown)
Processor Speed	4.77/12MHz
Chip Set	Unidentified
Max. Onboard DRAM	1MB
Cache	None
BIOS	Unidentified
Dimensions	220mm x 220mm
I/O Options	None
NPU Options	8087(exact location is unknown)

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED	CN3	Keylock	CN6
Reset switch	CN4	Turbo LED	CN7
Speaker	CN5	Turbo switch	CN8

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CPU type select NEC V20	J5	Closed
	CPU type select 8088	J5	Open
»	RAM wait state select 0 wait state	J6	Closed
	RAM wait state select 1 wait state	J6	Open
»	ROM wait state select 0 wait state	J7	Closed
	ROM wait state select 1 wait state	J7	Open
»	Factory configured - do not alter	J8	Closed
»	Parity check disabled	SW1/1	On
	Parity check disabled	SW1/1	Off
»	NPU disabled	SW1/2	On
	NPU enabled	SW1/2	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3	Bank 4
256KB	(2) 414256	NONE	NONE	NONE	NONE
512KB	(2) 414256	(2) 414256	NONE	NONE	NONE
640KB	(2) 414256	(2) 414256	(4) 41464	NONE	NONE
1MB	(2) 414256	(2) 414256	NONE	(2) 414256	(2) 414256

DRAM CONFIGURATION (PARITY)
Size	Parity 0	Parity 1	Parity 2	Parity 3	Parity 4
256KB	(1) 41256	NONE	NONE	NONE	NONE
512KB	(1) 41256	(1) 841256	NONE	NONE	NONE
640KB	(1) 41256	(1) 41256	(2) 4164	NONE	NONE
1MB	(1) 41256	(1) 41256	NONE	(1) 41256	(1) 41256
Note:If SW1 is disabled, parity chips are not needed.

DRAM SWITCH CONFIGURATION
Size	SW1/3	SW1/4
0KB	On	On
256KB	Off	On
512KB	Off	On
640KB	On	Off
1MB	Off	Off

MONITOR CONFIGURATION
Type	SW1/5	SW1/6
None installed	On	On
Monochrome	Off	Off
VGA (40 x 25)	Off	On
VGA (80 x 25)	On	Off
Note: Without ERSO BIOS 3301 installed.

MONITOR CONFIGURATION
Type	SW1/5	SW1/6
Monochrome	On	On
VGA (40 x 25)	Off	On
VGA (80 x 25)	On	Off
Note: With ERSO BIOS 3301 installed.

DISK DRIVE CONFIGURATION
Drives installed	SW1/7	SW1/8
1	On	On
2	Off	On
3	On	Off
4	Off	Off