486 SERIES (MINI CASE - ASIC II) Motherboard Settings and Configuration

VTECH INDUSTRIES, INC.

486 SERIES (MINI CASE - ASIC II)

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

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J3
Front panel connector
J21
Speaker
J4
32-bit VESA local bus slots
SL1 & SL1

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Factory configured - do not alter
JP1
N/A
»
Factory configured - do not alter
JP3
Open
»
Factory configured - do not alter
JP10
pins 1 & 2 closed
»
CMOS memory normal operation
JP11
pins 1 & 2 closed

CMOS memory clear
JP11
pins 2 & 3 closed
»
Battery type select internal
JP12
pins 1 & 2 closed

Battery type select external
JP12
pins 2 & 3 closed
»
VESA card select does not support write back cache
JP14
pins 1 & 2 closed

VESA card select supports write back cache
JP14
pins 2 & 3 closed
»
Factory configured - do not alter
JP15
N/A
»
Factory configured - do not alter
JP19
N/A

DRAM CONFIGURATION
Size
Bank 0
Bank 1
1MB
(4) 256K x 9
NONE
2MB
(4) 256K x 9
(4) 256K x 9
2MB
(4) 512K x 9
NONE
4MB
(4) 512K x 9
(4) 512K x 9
4MB
(4) 1M x 9
NONE
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
TAG
128KB
(4) 32K x 8
(2) 8K x 8
128KB
(4) 32K x 9
(2) 8K x 9

CACHE JUMPER CONFIGURATION
Size
JP5
JP6
JP7
JP8
32K x 8
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
32K x 9
pins 2 & 3 closed
pins 2 & 3 closed
pins 2 & 3 closed
pins 2 & 3 closed

CPU UPGRADE CONFIGURATION
Type
JP2
None installed
pins 1 & 2, 4 & 5 closed
80486SX/DX/DX2 series installed
pins 2 & 3, 4 & 5 closed
Note: There is a PQFP CPU installed but the location is unidentified. These CPU types are installed in the PGA socket.

CPU SPEED CONFIGURATION
Speed
JP16
JP17
JP18
25MHz
Open
Open
Closed
33MHz
Closed
Closed
Open
50iMHz
Open
Open
Closed
66iMHz
Closed
Closed
Open

BUS SPEED CONFIGURATION
CPU speed
JP4
JP13
JP20
<= 33MHz
pins 2 & 3 closed
pins 1 & 2 closed
Open
> 33MHz
pins 1 & 2 closed
pins 2 & 3 closed
Closed

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486 SERIES (MINI CASE - ASIC II) Motherboard Settings and Configuration

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

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J3	Front panel connector	J21
Speaker	J4	32-bit VESA local bus slots	SL1 & SL1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP1	N/A
»	Factory configured - do not alter	JP3	Open
»	Factory configured - do not alter	JP10	pins 1 & 2 closed
»	CMOS memory normal operation	JP11	pins 1 & 2 closed
	CMOS memory clear	JP11	pins 2 & 3 closed
»	Battery type select internal	JP12	pins 1 & 2 closed
	Battery type select external	JP12	pins 2 & 3 closed
»	VESA card select does not support write back cache	JP14	pins 1 & 2 closed
	VESA card select supports write back cache	JP14	pins 2 & 3 closed
»	Factory configured - do not alter	JP15	N/A
»	Factory configured - do not alter	JP19	N/A

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
2MB	(4) 512K x 9	NONE
4MB	(4) 512K x 9	(4) 512K x 9
4MB	(4) 1M x 9	NONE
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	TAG
128KB	(4) 32K x 8	(2) 8K x 8
128KB	(4) 32K x 9	(2) 8K x 9

CACHE JUMPER CONFIGURATION
Size	JP5	JP6	JP7	JP8
32K x 8	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
32K x 9	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed

CPU UPGRADE CONFIGURATION
Type	JP2
None installed	pins 1 & 2, 4 & 5 closed
80486SX/DX/DX2 series installed	pins 2 & 3, 4 & 5 closed
Note: There is a PQFP CPU installed but the location is unidentified. These CPU types are installed in the PGA socket.

CPU SPEED CONFIGURATION
Speed	JP16	JP17	JP18
25MHz	Open	Open	Closed
33MHz	Closed	Closed	Open
50iMHz	Open	Open	Closed
66iMHz	Closed	Closed	Open

BUS SPEED CONFIGURATION
CPU speed	JP4	JP13	JP20
<= 33MHz	pins 2 & 3 closed	pins 1 & 2 closed	Open
> 33MHz	pins 1 & 2 closed	pins 2 & 3 closed	Closed