PTM-1230C Motherboard Settings and Configuration

Processor	80286
Processor Speed	12MHz
Chip Set	VLSI/VTI
Max. Onboard DRAM	1MB
Cache	None
BIOS	DTK
Dimensions	341.6mm x 204.2mm
I/O Options	Parallel port, serial ports (2)
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J1	External battery	J12
Reset switch	J2	Serial port (COM2)	CN1
Speaker	J3	Serial port (COM1)	CN2
Turbo LED	J4	Parallel port	CN3
Turbo switch	J5

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	DRAM speed select 0 wait states	J6	Closed
	DRAM speed select 1 wait state	J6	Open
»	Factory configured - do not alter	J7	Unknown
»	Factory configured - do not alter	J10	N/A
»	Monitor type select color	J11	Closed
	Monitor type select monochrome	J11	Open
»	BIOS type select 27256	J22	Closed
	BIOS type select 27128	J22	Open
»	CMOS memory normal operation	JP1	Closed
	CMOS memory clear	JP1	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1
512KB	(18) 41256	NONE
640KB	(18) 41256	(18) 4164
1MB	(18) 41256	(18) 41256

DRAM JUMPER CONFIGURATION
Size	J8	J9
512KB	Closed	Closed
640KB	Closed	Open
1MB	Open	Closed

PARALLEL PORT (CN3) CONFIGURATION
Port	J13	J14	J19
LPT1	Closed	Closed	pins 1 & 2 closed
LPT2	Open	Open	pins 2 & 3 closed
Disabled	Open	Closed	N/A
Disabled	Closed	Open	N/A

SERIAL PORT CONFIGURATION
Serial Port 1 (CN2)	J15	J16	Serial Port 2 (CN1)	J17	J18
COM1	Closed	Closed	COM2	Closed	Closed
COM3	Open	Open	COM4	Open	Open
Disabled	Closed	Open	Disabled	Closed	Open
Disabled	Open	Closed	Disabled	Open	Closed