G486ULB Motherboard Settings and Configuration

JOINDATA SYSTEMS, INC.

G486ULB

Processor
80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed
20/25/33/50(internal)/50/66(internal)MHz
Chip Set
EFAR
Max. Onboard DRAM
32MB
Cache
64/128/256KB
BIOS
AMI
Dimensions
330mm x 218mm
I/O Options
32-bit local bus card slots (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Reset switch
J9
Power LED & keylock
J13
Turbo LED
J10
External battery
J14
Turbo switch
J11
32-bit local bus card slots
S15 & S16
Speaker
J12

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Factory configured - do not alter
J18
Closed
»
Factory configured - do not alter
W10
N/A
»
Monitor type select color
JP15
pins 1 & 2 closed

Monitor type select monochrome
JP15
pins 2 & 3 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

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG (U38, U39)
TAG (U40)
Dirty(U48)
64KB
(4) 8K x 8
(4) 8K x 8
(2) 16K x 4
NONE
(1) 16K x 4
64KB
(4) 8K x 8
(4) 8K x 8
NONE
(1) 8K x 8
(1) 16K x 4
128KB
(4) 32K x 8
NONE
(2) 16K x 4
NONE
(1) 16K x 4
128KB
(4) 32K x 8
NONE
NONE
(1) 8K x 8
(1) 16K x 4
256KB
(4) 32K x 8
(4) 32K x 8
(2) 16K x 4
NONE
(1) 16K x 4
256KB
(4) 32K x 8
(4) 32K x 8
NONE
(1) 32K x 8
(1) 16K x 4

CACHE JUMPER CONFIGURATION
Size
W14
W15
W16
W17
W18
64KB
1 & 2
Open
1 & 2
1 & 2
2 & 3
128KB
2 & 3
1 & 2
1 & 2
2 & 3
2 & 3
256KB
1 & 2
2 & 3
2 & 3
2 & 3
2 & 3
Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
OSC1
W11
W12
W13
80486SX-20
20MHz
Open
Open
pins 1 & 2 closed
80486SX-25
25MHz
Open
Open
pins 1 & 2 closed
80486DX-25
25MHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
80486DX-33
33MHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
80486DX-50
50MHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
80486DX2-50
25MHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
80486DX2-66
33MHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed

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G486ULB Motherboard Settings and Configuration

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Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	20/25/33/50(internal)/50/66(internal)MHz
Chip Set	EFAR
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit local bus card slots (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J9	Power LED & keylock	J13
Turbo LED	J10	External battery	J14
Turbo switch	J11	32-bit local bus card slots	S15 & S16
Speaker	J12

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	J18	Closed
»	Factory configured - do not alter	W10	N/A
»	Monitor type select color	JP15	pins 1 & 2 closed
	Monitor type select monochrome	JP15	pins 2 & 3 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

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG (U38, U39)	TAG (U40)	Dirty(U48)
64KB	(4) 8K x 8	(4) 8K x 8	(2) 16K x 4	NONE	(1) 16K x 4
64KB	(4) 8K x 8	(4) 8K x 8	NONE	(1) 8K x 8	(1) 16K x 4
128KB	(4) 32K x 8	NONE	(2) 16K x 4	NONE	(1) 16K x 4
128KB	(4) 32K x 8	NONE	NONE	(1) 8K x 8	(1) 16K x 4
256KB	(4) 32K x 8	(4) 32K x 8	(2) 16K x 4	NONE	(1) 16K x 4
256KB	(4) 32K x 8	(4) 32K x 8	NONE	(1) 32K x 8	(1) 16K x 4

CACHE JUMPER CONFIGURATION
Size	W14	W15	W16	W17	W18
64KB	1 & 2	Open	1 & 2	1 & 2	2 & 3
128KB	2 & 3	1 & 2	1 & 2	2 & 3	2 & 3
256KB	1 & 2	2 & 3	2 & 3	2 & 3	2 & 3
Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	OSC1	W11	W12	W13
80486SX-20	20MHz	Open	Open	pins 1 & 2 closed
80486SX-25	25MHz	Open	Open	pins 1 & 2 closed
80486DX-25	25MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
80486DX-33	33MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
80486DX-50	50MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
80486DX2-50	25MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
80486DX2-66	33MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed