Processor	8086
Processor Speed	4.77MHz
Chip Set	None
Max. Onboard DRAM	640KB
Cache	None
BIOS	AT&T
Dimensions	272mm x 254mm
I/O Options	Parallel port, serial ports (2), floppy drive interface
NPU Options	8087

SYSTEM BOARD CONNECTIONS
Purpose	Location	Purpose	Location
To CRT controller board at J9	J1	Serial port 2	J5
To CRT controller board at J11	J2	Keyboard	J6
Serial port 1	J3	Floppy drive	J7
Parallel port	J4	+/- 12V Power	P1
Note:Bus converter board and display enhancement board not shown.

SYSTEM BOARD USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Factory configured - do not alter	JA	N/A
»	Factory configured - do not alter	JB	N/A
»	Clock enabled	JC	Closed
	Clock disabled	JC	Open
»	Factory configured - do not alter	JD	N/A
»	Clock battery enabled	JE	Closed
	Clock battery disabled	JE	Open
»	NPU enabled	SW0/5	Off
	NPU disabled	SW0/5	On
»	Serial interface select 8250	SW0/6	On
	Serial interface select 8350	SW0/6	Off
»	BIOS type select 2732	SW0/8	On
	BIOS type select 2764	SW0/8	Off
»	Disk drive select 96 TPI	SW1/1	Off
	Disk drive select 48 TPI	SW1/1	On
»	Disk drive select fast start-up	SW1/2	Off
	Disk drive select slow start-up	SW1/2	On

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
128KB	(9) 4164	(9) 4164	NONE	NONE
256KB	(9) 4164	(9) 4164	(9) 4164	(9) 4164
512KB	(9) 4464	(9) 4464	NONE	NONE
640KB	(9) 4164	(9) 4164	(9) 41256	(9) 41256

DRAM SWITCH CONFIGURATION
Size	SW0/1	SW0/2	SW0/3	SW0/4
128KB	Off	On	On	On
256KB	On	Off	On	On
512KB	On	On	Off	On
640KB	Off	On	Off	On

VIDEO CONFIGURATION
Size	SW1/5	SW1/6
80 columns	On	Off
40 columns	Off	On

HARD DRIVE CONFIGURATION
Setting	SW1/3	SW1/4
Enabled	Off	Off
Disabled	On	On

FLOPPY DRIVE CONFIGURATION
Drives installed	SW1/7	SW1/8
1	On	On
2	Off	On

CRT CONTROLLER BOARD CONNECTIONS
Purpose	Location	Purpose	Location
To bus converter board	J8	Monitor	J12
To system board at J1	J9	To display enhancement board	J13
To bus converter board	J10	+15V Power	P2
To system board at J2	J11

CRT CONTROLLER BOARD USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Oscillator select internal	JF	pins 2 & 3 closed
	Oscillator select on display enhancement board	JF	pins 4 & 5 closed
»	Clock select internal	JF	pins 5 & 6 closed
	Oscillator select 24MHz	JF	pins 1 & 2 closed