TURBO - V4 Motherboard Settings and Configuration

Processor	8088 (exact location unknown)
Processor Speed	8MHz
Chip Set	Unidentified
Max. Onboard DRAM	640KB
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	8087 (exact location unknown)

CONNECTIONS
Purpose	Location	Purpose	Location
Keylock	JP3	Power LED	JP7
Turbo switch	JP5	Speaker	SPK
LED counter	JP6

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Softswitch enabled	JP4	Open
	Softswitch disabled	JP4	Closed
»	Factory configured - do not alter	SW1/3	N/A
»	Factory configured - do not alter	SW1/4	N/A
»	Self test disabled	SW2/1	On
	Self test enabled	SW2/1	Off
»	NPU disabled	SW2/2	On
	NPU enabled	SW2/2	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
64KB	(9) 4164	NONE	NONE	NONE
128KB	(9) 4164	(9) 4164	NONE	NONE
192KB	(9) 4164	(9) 4164	(9) 4164	NONE
256KB	(9) 4164	(9) 4164	(9) 4164	(9) 4164
448KB	(9) 41256	(9) 4164	(9) 4164	(9) 4164
640KB	(9) 41256	(9) 41256	(9) 4164	(9) 4164
640KB	(9) 41256	(9) 41256	(9) 41256	NONE

DRAM SWITCH CONFIGURATION
Size	SW1/1	SW1/2	SW2/3	SW2/4
64KB	N/A	N/A	On	On
128KB	N/A	N/A	Off	On
192KB	N/A	N/A	On	Off
256KB	On	On	Off	Off
448KB	On	Off	N/A	N/A
640KB	Off	On	N/A	N/A
640KB	Off	Off	N/A	N/A

VIDEO CONFIGURATION
Type	SW2/5	SW2/6
None	On	On
Monochrome	Off	Off
40 x 25 color	Off	On
80 x 25 color	On	Off

FLOPPY DRIVE CONFIGURATION
Drives installed	SW2/7	SW2/8
1	On	On
2	Off	On
3	On	Off
4	Off	Off