TR-486DX Motherboard Settings and Configuration

TRENTON TECHNOLOGY, INC.

TR-486DX

Processor
80486SX/80486DX/80486DX2/80486DX4/P24D/P24T
Processor Speed
33/50(internal)/50/66(internal)100(internal)MHz
Chip Set
Unidentified
Video Chip Set
None
Maximum Onboard Memory
128MB
Maximum Video Memory
None
Cache
256KB
BIOS
AMI
Dimensions
Unidentified
I/O Options
Floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Power LED & keylock
P2
Serial port 2
P7
Floppy drive interface
P3
Parallel port
P8
Auxiliary keyboard connector
P4
CPU fan power
P9
Speaker
P5
Reset switch
P10
Combo I/O connector
P5A
IDE interface
P11
Serial port 1
P6
IDE interface LED
P12

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Monitor type select color
JU80
Pins 1 & 2 closed

Monitor type select monochrome
JU80
Pins 2 & 3 closed
»
Password normal operation
JU81
Open

Password clear
JU81
Closed
»
Watchdog timer disabled
JU82
Pins 1 & 2 closed

Watchdog timer enabled
JU82
Pins 2 & 3 closed
»
CMOS memory normal operation
JU83
Open

CMOS memory clear
JU83
Closed
»
Speaker data signal to pin 8 on P5A enabled
JU84
Closed

Speaker data signal to pin 8 on P5A disabled
JU84
Open
»
Reset data signal to pin 1 on P5A enabled
JU85
Closed

Reset data signal to pin 1 on P5A disabled
JU85
Open

SIMM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
4MB
(1) 1M x 36
None
None
None
8MB
(1) 2M x 36
None
None
None
8MB
(1) 1M x 36
(1) 1M x 36
None
None
12MB
(1) 2M x 36
(1) 1M x 36
None
None
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
None
16MB
(1) 4M x 36
None
None
None
16MB
(1) 2M x 36
(1) 1M x 36
(1) 1M x 36
None
16MB
(1) 2M x 36
(1) 2M x 36
None
None
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
20MB
(1) 4M x 36
(1) 1M x 36
None
None
20MB
(1) 2M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
20MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
None
24MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
None
24MB
(1) 4M x 36
(1) 2M x 36
None
None
24MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
None
28MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
28MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
32MB
(1) 8M x 36
None
None
None
32MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
None
32MB
(1) 4M x 36
(1) 4M x 36
None
None
32MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
36MB
(1) 8M x 36
(1) 1M x 36
None
None
40MB
(1) 8M x 36
(1) 1M x 36
(1) 1M x 36
None
40MB
(1) 8M x 36
(1) 2M x 36
None
None

SIMM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
40MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
44MB
(1) 8M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
48MB
(1) 8M x 36
(1) 2M x 36
(1) 2M x 36
None
48MB
(1) 8M x 36
(1) 4M x 36
None
None
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
None
56MB
(1) 8M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
64MB
(1) 8M x 36
(1) 4M x 36
(1) 4M x 36
None
64MB
(1) 8M x 36
(1) 8M x 36
None
None
64MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
72MB
(1) 2M x 36
(1) 8M x 36
(1) 8M x 36
None
80MB
(1) 8M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
96MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
None
112MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
(1) 4M x 36
128MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36

CACHE CONFIGURATION
Size
Bank 0
256KB
(8) 32K x 8
Note: Bank 0 is factory installed and is not configurable.

CPU TYPE SELECTION
Type
JU10
80486SX
Pins 2 & 3 closed
All other CPU types
Pins 1 & 2 closed

CPU TYPE SELECTION
Type
JU11
S-series CPU
Pins 2 & 3 closed
Non S-series CPU
Pins 1 & 2 closed

CPU TYPE SELECTION
Type
JU13
Non ODP CPU
Closed
ODP CPU
Open

CPU TYPE SELECTION
Type
JU14
P24D
Closed
P24T
Closed
All other CPU types
Open

CPU MULTIPLIER SELECTION
Multiplier
JU12
2x
Pins 2 & 3 closed
2.5x
Pins 1 & 2 closed
3x
Open

DMA CHANNEL SELECTION
Channel
JU103
JU104
3
Pins 7 & 8 closed
Pins 7 & 8 closed
5
Pins 5 & 6 closed
Pins 5 & 6 closed
6
Pins 3 & 4 closed
Pins 3 & 4 closed
7
Pins 1 & 2 closed
Pins 1 & 2 closed

SERIAL PORT 1 INTERRUPT SELECTION
IRQ
JU100
»
IRQ4
Pins 2 & 3 closed

IRQ3
Pins 1 & 2 closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ
JU101
»
IRQ3
Pins 1 & 2 closed

IRQ4
Pins 2 & 3 closed

PARALLEL PORT INTERRUPT SELECTION
IRQ
JU102
»
IRQ7
Pins 1 & 2 closed

IRQ5
Pins 2 & 3 closed

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TR-486DX Motherboard Settings and Configuration

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Processor	80486SX/80486DX/80486DX2/80486DX4/P24D/P24T
Processor Speed	33/50(internal)/50/66(internal)100(internal)MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	128MB
Maximum Video Memory	None
Cache	256KB
BIOS	AMI
Dimensions	Unidentified
I/O Options	Floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	P2	Serial port 2	P7
Floppy drive interface	P3	Parallel port	P8
Auxiliary keyboard connector	P4	CPU fan power	P9
Speaker	P5	Reset switch	P10
Combo I/O connector	P5A	IDE interface	P11
Serial port 1	P6	IDE interface LED	P12

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Monitor type select color	JU80	Pins 1 & 2 closed
	Monitor type select monochrome	JU80	Pins 2 & 3 closed
»	Password normal operation	JU81	Open
	Password clear	JU81	Closed
»	Watchdog timer disabled	JU82	Pins 1 & 2 closed
	Watchdog timer enabled	JU82	Pins 2 & 3 closed
»	CMOS memory normal operation	JU83	Open
	CMOS memory clear	JU83	Closed
»	Speaker data signal to pin 8 on P5A enabled	JU84	Closed
	Speaker data signal to pin 8 on P5A disabled	JU84	Open
»	Reset data signal to pin 1 on P5A enabled	JU85	Closed
	Reset data signal to pin 1 on P5A disabled	JU85	Open

SIMM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	None	None	None
8MB	(1) 2M x 36	None	None	None
8MB	(1) 1M x 36	(1) 1M x 36	None	None
12MB	(1) 2M x 36	(1) 1M x 36	None	None
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	None
16MB	(1) 4M x 36	None	None	None
16MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	None
16MB	(1) 2M x 36	(1) 2M x 36	None	None
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 4M x 36	(1) 1M x 36	None	None
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	None
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	None
24MB	(1) 4M x 36	(1) 2M x 36	None	None
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	None
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
28MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
32MB	(1) 8M x 36	None	None	None
32MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
36MB	(1) 8M x 36	(1) 1M x 36	None	None
40MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	None
40MB	(1) 8M x 36	(1) 2M x 36	None	None

SIMM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
40MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
44MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	None
48MB	(1) 8M x 36	(1) 4M x 36	None	None
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	None
56MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
64MB	(1) 8M x 36	(1) 4M x 36	(1) 4M x 36	None
64MB	(1) 8M x 36	(1) 8M x 36	None	None
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
72MB	(1) 2M x 36	(1) 8M x 36	(1) 8M x 36	None
80MB	(1) 8M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
96MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	None
112MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 4M x 36
128MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36

CACHE CONFIGURATION
Size	Bank 0
256KB	(8) 32K x 8
Note: Bank 0 is factory installed and is not configurable.

CPU TYPE SELECTION
Type	JU10
80486SX	Pins 2 & 3 closed
All other CPU types	Pins 1 & 2 closed

CPU TYPE SELECTION
Type	JU11
S-series CPU	Pins 2 & 3 closed
Non S-series CPU	Pins 1 & 2 closed

CPU TYPE SELECTION
Type	JU13
Non ODP CPU	Closed
ODP CPU	Open

CPU TYPE SELECTION
Type	JU14
P24D	Closed
P24T	Closed
All other CPU types	Open

CPU MULTIPLIER SELECTION
Multiplier	JU12
2x	Pins 2 & 3 closed
2.5x	Pins 1 & 2 closed
3x	Open

DMA CHANNEL SELECTION
Channel	JU103	JU104
3	Pins 7 & 8 closed	Pins 7 & 8 closed
5	Pins 5 & 6 closed	Pins 5 & 6 closed
6	Pins 3 & 4 closed	Pins 3 & 4 closed
7	Pins 1 & 2 closed	Pins 1 & 2 closed

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		JU100
»	IRQ4	Pins 2 & 3 closed
	IRQ3	Pins 1 & 2 closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		JU101
»	IRQ3	Pins 1 & 2 closed
	IRQ4	Pins 2 & 3 closed

PARALLEL PORT INTERRUPT SELECTION
IRQ		JU102
»	IRQ7	Pins 1 & 2 closed
	IRQ5	Pins 2 & 3 closed