TXM/10-IV Motherboard Settings and Configuration

Processor	8088
Processor Speed	4.77/10MHz
Chip Set	Unidentified
Max. Onboard DRAM	1MB
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	8087

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	JP7	Turbo switch	JP10
Reset switch	JP8	Keylock	JP11
Turbo LED	JP9	Power LED	JP12

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Parity enabled	JP6	Open
	Parity disabled	JP6	Closed
»	Factory configured - do not alter	SW1/1	Off
»	NPU disabled	SW1/2	On
	NPU enabled	SW1/2	Off
»	Factory configured - do not alter	SW1/3	Off
»	Factory configured - do not alter	SW1/4	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2A	Bank 3A	Bank 2B	Bank 3B	Bank 2C	Bank 3C
256KB	(2)44256	NONE	NONE	NONE	NONE	NONE	NONE	NONE
512KB	(2)44256	(2)44256	NONE	NONE	NONE	NONE	NONE	NONE
640KB	(2)44256	(2)44256	NONE	NONE	(2)4464	(2)4464	NONE	NONE
640KB	(2)44256	(2)44256	NONE	NONE	(2)4164	(2)4164	(6)4164	(6)4164
1MB	(2)44256	(2)44256	(2)44256	(2)44256	NONE	NONE	NONE	NONE

DRAM PARITY CONFIGURATION
Size	P 0	P 1	P 2A	P 3A	P 2B	P 3B	P 2C	P 3C
256KB	(1)41256	NONE	NONE	NONE	NONE	NONE	NONE	NONE
512KB	(1)41256	(1)41256	NONE	NONE	NONE	NONE	NONE	NONE
640KB	(1)41256	(1)41256	NONE	NONE	NONE	NONE	(1)4164	(1)4164
640KB	(1)41256	(1)41256	NONE	NONE	NONE	NONE	(2)4164	(2)4164
1MB	(1)41256	(1)41256	(1)41256	(1)41256	NONE	NONE	NONE	NONE

DRAM SWITCH CONFIGURATION
Size	SW1/9	SW1/10
256KB	On	On
512KB	Off	On
640KB	On	Off
1MB	Off	Off

VIDEO TYPE CONFIGURATION
Type	SW1/5	SW1/6
CGA (40 x 25)	Off	On
CGA (80 x 25)	On	Off
EGA/VGA	On	On
MGA	Off	Off

FLOPPY DRIVE CONFIGURATION
Floppy drives installed	SW1/7	SW1/8
1	On	On
2	Off	On
3	On	Off
4	Off	Off

BIOS CONFIGURATION
Setting	CN3
27128 installed in U80	pins 2 & 17, 3 & 16, 5 & 14, 7 & 12 closed
27256 installed in U65 & 2764 installed in U80	pins 1 & 18, 4 & 15, 6 & 13 closed