PAT38PM Motherboard Settings and Configuration

Processor	80386DX/CX486DLC
Processor Speed	33/40MHz
Chip Set	OPTI
Max. Onboard DRAM	32MB
SRAM Cache	64/128/256KB
BIOS	AMI
Dimensions	254mm x 220mm
I/O Options	None
NPU Options	80387/CX83D87

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Reset switch	J20/pins 9 & 19
Speaker	J20/pins 1-4	IDE interface LED	J20/pins 10 & 20
Turbo switch	J20/pins 7 & 17	IDE interface LED	J21
Turbo LED	J20/pins 8 & 18

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
	AT bus clock select CPU/4 (CPU 33MHz)	JP2	open
	AT bus clock select CPU/5 (CPU 40MHz)	JP2	closed
»	CMOS memory normal operation (internal battery)	JP3	pins 1 & 2 closed
	CMOS memory normal operation (external battery)	JP3	open
	CMOS memory clear	JP3	pins 2 & 3 closed
»	Monitor type select color	JP4	closed
	Monitor type select monochrome	JP4	open
»	NPU synchronous with CPU	JP20	open
	NPU synchronous with oscillator installed at OSC1	JP20	closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE
5MB	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9

SRAM CONFIGURATION
Size	Cache	Location	TAG
64KB	(8) 8K x 8	Banks 0 & 1	(1) 8K x 8
128KB	(4) 32K x 8	Bank 0	(1) 8K x 8
256KB	(8) 32K x 8	Banks 0 & 1	(1) 32K x 8

SRAM JUMPER CONFIGURATION
Resistor	64KB	128KB	256KB
RND	closed	open	open
RNE	open	closed	open
RNF	open	open	closed

CPU RESISTTOR NETWORK CONFIGURATION
CPU(PQFP)	CPU(PGA)	JP19	RNA	RNB
80386DX	CX486DLC	closed	open	closed
NONE	CX486DLC	N/A	open	closed
80386DX	80386DX	closed	closed	open
NONE	80386DX	N/A	closed	open
80386DX	NONE	open	closed	open
Note:The CPUs in bold-italic are the active CPUs.