80486 ASIC EISA Motherboard Settings and Configuration

MICRONICS COMPUTERS, INC.

80486 ASIC EISA

Processor
80486DX/80486DX2
Processor Speed
25/33/50(internal)MHz
Chip Set
Micronics
Max. Onboard DRAM
64MB
Cache
64/256KB
BIOS
Phoenix
Dimensions
355mm x 302mm
I/O Options
32-bit external memory card slot
NPU Options
4167

CONNECTIONS
Purpose
Location
Purpose
Location
External keyboard
J1
Speaker
J22
Parallel port
J4
Power LED & keylock
J23
Serial port COM1
J5
Reset switch
W5
Serial port COM2
J15
Turbo switch
W6
Floppy drive interface
J17
Turbo LED
W7
External battery
J18
Local bus expansion slot
S1

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Factory configured - do not alter
W8
pins 1 & 2 closed
»
Factory configured - do not alter
W10
pins 2 & 3 closed
»
Factory configured - do not alter
W11
pins 2 & 3 closed
»
Factory configured - do not alter
W12
pins 1 & 2 closed
»
Floppy drive interface enabled
W13
pins 1 & 2 closed

Floppy drive interface disabled
W13
pins 2 & 3 closed
»
CPU type select 80486DX-33
W43
Open

CPU type select 80486DX2-50
W43
pins 1 & 2 closed
»
Factory configured - do not alter
W45
pins 1 & 2 closed
»
Factory configured - do not alter
SW1/6
On
»
Factory configured - do not alter
SW1/7
Off
»
Monitor type select color
SW1/8
On

Monitor type select monochrome
SW1/8
Off

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
1MB
(4) 256K x 9
NONE
NONE
NONE
2MB
(4) 256K x 9
(4) 256K x 9
NONE
NONE
3MB
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
NONE
4MB
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
4MB
(4) 1M x 9
NONE
NONE
NONE
5MB
(4) 256K x 9
(4) 1 M x 9
NONE
NONE
6MB
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
NONE
7MB
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
8MB
(4) 1M x 9
(4) 1M x 9
NONE
NONE
9MB
(4) 256K x 9
(4) 1M x 9
(4) 1M x 9
NONE
10MB
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
(4) 1M x 9
12MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
NONE
13MB
(4) 256K x 9
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
16MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
16MB
(4) 4M x 9
NONE
NONE
NONE
20MB
(4) 1M x 9
(4) 4M x 9
NONE
NONE
24MB
(4) 1M x 9
(4) 1M x 9
(4) 4M x 9
NONE
28MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
(4) 4M x 9

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
32MB
(4) 4M x 9
(4) 4M x 9
NONE
NONE
36MB
(4) 1M x 9
(4) 4M x 9
(4) 4M x 9
NONE
40MB
(4) 1M x 9
(4) 1M x 9
(4) 4M x 9
(4) 4M x 9
48MB
(4) 4M x 9
(4) 4M x 9
(4) 4M x 9
NONE
52MB
(4) 1M x 9
(4) 4M x 9
(4) 4M x 9
(4) 4M x 9
64MB
(4) 4M x 9
(4) 4M x 9
(4) 4M x 9
(4) 4M x 9

DRAM SWITCH CONFIGURATION
Size
SW1/1
SW1/2
SW1/3
SW1/4
SW1/5
1MB
On
On
On
On
On
2MB
Off
On
On
On
On
3MB
On
Off
On
On
On
4MB 1
Off
Off
On
On
On
4MB 2
On
On
Off
On
On
5MB
On
On
Off
Off
On
6MB
On
Off
On
Off
On
7MB
Off
On
On
Off
On
8MB
Off
On
Off
On
On
9MB
On
Off
Off
Off
On
10MB
Off
Off
On
Off
On
12MB
On
Off
Off
On
On
13MB
Off
Off
Off
Off
On
16MB 1
Off
Off
Off
On
On
16MB 3
On
On
Off
On
Off
20MB
On
On
Off
Off
Off
24MB
On
Off
On
Off
Off
28MB
Off
On
On
Off
Off
32MB
Off
On
Off
On
Off
36MB
On
Off
Off
Off
Off
40MB
Off
Off
On
Off
Off
48MB
On
Off
Off
On
Off
52MB
Off
Off
Off
Off
Off
64MB
Off
Off
Off
On
Off
Note 1 :Use this setting when banks are populated with (4) 256K x 9 SIMMs
Note 2 :Use this setting when banks are populated with (4) 1M x 9 SIMMs
Note 3 :Use this setting when banks are populated with (4) 4M x 9 SIMMs

CACHE CONFIGURATION
Size
Bank 0
64KB
(8) 8K x 8
256KB
(8) 32K x 8

CACHE JUMPER CONFIGURATION
Size
W20
W21
W41
W44
64KB
pins 2 & 3 closed
Open
Open
Open
256KB
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed

PARALLEL PORT CONFIGURATION
Size
W3
W4
LPT1
pins 1 & 2 closed
pins 2 & 3 closed
LPT2
pins 1 & 2 closed
pins 1 & 2 closed
LPT3
pins 2 & 3 closed
pins 1 & 2 closed
Disabled
pins 2 & 3 closed
pins 2 & 3 closed

SERIAL COM PORT CONFIGURATION
Size
W2
W9
COM1 (J5) and COM2 (J15) enabled
pins 1 & 2 closed
pins 1 & 2 closed
COM1 (J5) enabled and COM2 (J15) disabled
pins 1 & 2 closed
pins 2 & 3 closed
COM1 (J5) disabled and COM2 (J15) enabled
pins 2 & 3 closed
pins 1 & 2 closed
COM1 (J5) and COM2 (J15) disabled
pins 2 & 3 closed
pins 2 & 3 closed

80486 ASIC EISA Motherboard Settings and Configuration

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Processor	80486DX/80486DX2
Processor Speed	25/33/50(internal)MHz
Chip Set	Micronics
Max. Onboard DRAM	64MB
Cache	64/256KB
BIOS	Phoenix
Dimensions	355mm x 302mm
I/O Options	32-bit external memory card slot
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
External keyboard	J1	Speaker	J22
Parallel port	J4	Power LED & keylock	J23
Serial port COM1	J5	Reset switch	W5
Serial port COM2	J15	Turbo switch	W6
Floppy drive interface	J17	Turbo LED	W7
External battery	J18	Local bus expansion slot	S1

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Factory configured - do not alter	W8	pins 1 & 2 closed
»	Factory configured - do not alter	W10	pins 2 & 3 closed
»	Factory configured - do not alter	W11	pins 2 & 3 closed
»	Factory configured - do not alter	W12	pins 1 & 2 closed
»	Floppy drive interface enabled	W13	pins 1 & 2 closed
	Floppy drive interface disabled	W13	pins 2 & 3 closed
»	CPU type select 80486DX-33	W43	Open
	CPU type select 80486DX2-50	W43	pins 1 & 2 closed
»	Factory configured - do not alter	W45	pins 1 & 2 closed
»	Factory configured - do not alter	SW1/6	On
»	Factory configured - do not alter	SW1/7	Off
»	Monitor type select color	SW1/8	On
	Monitor type select monochrome	SW1/8	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(4) 256K x 9	NONE	NONE	NONE
2MB	(4) 256K x 9	(4) 256K x 9	NONE	NONE
3MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	NONE
4MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE	NONE	NONE
5MB	(4) 256K x 9	(4) 1 M x 9	NONE	NONE
6MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	NONE
7MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9	NONE	NONE
9MB	(4) 256K x 9	(4) 1M x 9	(4) 1M x 9	NONE
10MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	(4) 1M x 9
12MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	NONE
13MB	(4) 256K x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE	NONE	NONE
20MB	(4) 1M x 9	(4) 4M x 9	NONE	NONE
24MB	(4) 1M x 9	(4) 1M x 9	(4) 4M x 9	NONE
28MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 4M x 9

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
32MB	(4) 4M x 9	(4) 4M x 9	NONE	NONE
36MB	(4) 1M x 9	(4) 4M x 9	(4) 4M x 9	NONE
40MB	(4) 1M x 9	(4) 1M x 9	(4) 4M x 9	(4) 4M x 9
48MB	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9	NONE
52MB	(4) 1M x 9	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9
64MB	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9

DRAM SWITCH CONFIGURATION
Size	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5
1MB	On	On	On	On	On
2MB	Off	On	On	On	On
3MB	On	Off	On	On	On
4MB 1	Off	Off	On	On	On
4MB 2	On	On	Off	On	On
5MB	On	On	Off	Off	On
6MB	On	Off	On	Off	On
7MB	Off	On	On	Off	On
8MB	Off	On	Off	On	On
9MB	On	Off	Off	Off	On
10MB	Off	Off	On	Off	On
12MB	On	Off	Off	On	On
13MB	Off	Off	Off	Off	On
16MB 1	Off	Off	Off	On	On
16MB 3	On	On	Off	On	Off
20MB	On	On	Off	Off	Off
24MB	On	Off	On	Off	Off
28MB	Off	On	On	Off	Off
32MB	Off	On	Off	On	Off
36MB	On	Off	Off	Off	Off
40MB	Off	Off	On	Off	Off
48MB	On	Off	Off	On	Off
52MB	Off	Off	Off	Off	Off
64MB	Off	Off	Off	On	Off
Note 1 :Use this setting when banks are populated with (4) 256K x 9 SIMMs Note 2 :Use this setting when banks are populated with (4) 1M x 9 SIMMs Note 3 :Use this setting when banks are populated with (4) 4M x 9 SIMMs

CACHE CONFIGURATION
Size	Bank 0
64KB	(8) 8K x 8
256KB	(8) 32K x 8

CACHE JUMPER CONFIGURATION
Size	W20	W21	W41	W44
64KB	pins 2 & 3 closed	Open	Open	Open
256KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed

PARALLEL PORT CONFIGURATION
Size	W3	W4
LPT1	pins 1 & 2 closed	pins 2 & 3 closed
LPT2	pins 1 & 2 closed	pins 1 & 2 closed
LPT3	pins 2 & 3 closed	pins 1 & 2 closed
Disabled	pins 2 & 3 closed	pins 2 & 3 closed

SERIAL COM PORT CONFIGURATION
Size	W2	W9
COM1 (J5) and COM2 (J15) enabled	pins 1 & 2 closed	pins 1 & 2 closed
COM1 (J5) enabled and COM2 (J15) disabled	pins 1 & 2 closed	pins 2 & 3 closed
COM1 (J5) disabled and COM2 (J15) enabled	pins 2 & 3 closed	pins 1 & 2 closed
COM1 (J5) and COM2 (J15) disabled	pins 2 & 3 closed	pins 2 & 3 closed