MODEL 189370/199720 Motherboard Settings and Configuration

Processor	80286
Processor Speed	6/8/10MHz
Chip Set	Unidentified
Maximum Onboard Memory	3MB (2.5MB on external memory card)
Cache	None
BIOS	Unidentified
Dimensions	355mm x 305mm
I/O Options	Serial port, parallel port
NPU Options	80287

CONNECTIONS
Function	Label	Function	Label
Serial port	CN1	Parallel port	CN2

USER CONFIGURABLE SETTINGS
Setting		Label	Position
	Signal select DTR driven	JP1	Pins 1 & 2 closed
	Signal select DTR true	JP1	Pins 2 & 3 closed
	Signal select DTR false	JP1	Open
	Signal select RTS driven	JP2	Pins 1 & 2 closed
	Signal select RTS true	JP2	Pins 2 & 3 closed
	Signal select RTS false	JP2	Open
	Signal select DCD driven	JP3	Pins 1 & 2 closed
	Signal select DCD true	JP3	Pins 2 & 3 closed
	Signal select DCD false	JP3	Open
	Signal select DSR driven	JP4	Pins 1 & 2 closed
	Signal select DSR true	JP4	Pins 2 & 3 closed
	Signal select DSR false	JP4	Open
	Signal select CTS driven	JP5	Pins 1 & 2 closed
	Signal select CTS true	JP5	Pins 2 & 3 closed
	Signal select CTS false	JP5	Open
»	Factory configured - do not alter (189370-001, 002)	JP6	Open
»	Factory configured - do not alter (189370-004, 005/199270)	JP6	Open
»	Factory configured - do not alter (189370-001, 002)	JP7	Open
»	Factory configured - do not alter (189370-004, 005/199270	JP7	Pins 1 & 2 closed
»	Factory configured - do not alter (189370-001, 002)	JP8	Pins 2 & 3 closed
»	Factory configured - do not alter (189370-004, 005/199270)	JP8	Pins 1 & 2 closed
»	Factory configured - do not alter (189370-001, 002)	JP9	Pins 2 & 3 closed
»	Factory configured - do not alter (189370-004, 005/199270)	JP9	Pins 1 & 2 closed
»	Factory configured - do not alter (189370-001, 002)	JP10	Pins 1 & 2 closed
»	Factory configured - do not alter (189370-004, 005/199270)	JP10	Open
»	Factory configured - do not alter (189370-001, 002)	JP11	Pins 1 & 2 closed
»	Factory configured - do not alter (189370-004, 005/199270)	JP11	Pins 1 & 2 closed
»	Factory configured - do not alter (189370-001, 002)	JP12	Open
»	Factory configured - do not alter (189370-004, 005/199270)	JP12	Open
»	Factory configured - do not alter (189370-001, 002)	JP13	Pins 1 & 2 closed
»	Factory configured - do not alter (189370-004, 005/199270)	JP13	Pins 1 & 2 closed
»	Factory configured - do not alter (189370-001, 002)	JP14	Pins 2 & 3 closed
»	Factory configured - do not alter (189370-004, 005/199270)	JP14	Pins 1 & 2 closed
	0 wait state enabled (model 199720 only)	SW1/1	On
	0 wait state disabled (model 199720 only)	SW1/1	Off
»	Factory configured - do not alter	SW1/2	N/A
»	Video type select 80 characters	SW1/3	Off
»	Factory configured - do not alter	SW1/4	Off

USER CONFIGURABLE SETTINGS (CON’T)
Setting		Label	Position
»	Factory configured - do not alter	SW1/5	N/A
»	Factory configured - do not alter	SW1/6	N/A
»	Factory configured - do not alter	SW1/7	N/A
	512KB - 640KB RAM address enabled	SW1/8	On
	512KB - 640KB RAM address disabled	SW1/8	Off

DRAM

Note: The orientation and chip sizes are unidentified.

DRAM
Size	Bank 0	Bank 1	Bank 2	Bank 3
512KB	(18) 41256	None	None	None
1MB	(18) 41256	(18) 41256	None	None
1.5MB	(18) 41256	(18) 41256	(18) 41256	None
2MB	(18) 41256	(18) 41256	(18) 41256	(18) 41256

DRAM SWITCH
Memory before	Memory after	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5
512-640KB	2560-2688KB	Off	Off	Off	On	Off
1024KB	3072KB	Off	Off	Off	On	On
2560-2688KB	4608-4736KB	Off	Off	On	On	Off
3072KB	5120KB	Off	Off	On	On	On
4608-4736KB	6656-6784KB	Off	On	Off	On	Off
5120KB	7168KB	Off	On	Off	On	On
656-6784KB	8704-8832KB	Off	On	On	On	Off
7168KB	9216KB	Off	On	On	On	On

DRAM SWITCH (CON’T)
Memory before	Memory after	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5
8704-8832KB	10752-10880KB	On	Off	Off	On	Off
9216KB	11264KB	On	Off	Off	On	On
10752-10880KB	12800-12928KB	On	Off	On	On	Off
11264KB	13312KB	On	Off	On	On	On
12800-12928KB	14848-14976KB	On	On	Off	On	Off
13312KB	15360KB	On	On	Off	On	On
14848-14976KB	15744KB	On	On	On	On	Off
15360KB	15744KB	On	On	On	On	On

MISCELLANEOUS TECHNICAL NOTE

The location of pin 1 is unidentified.