80486-EISA Motherboard Settings and Configuration

MICRONICS COMPUTERS, INC.

80486-EISA

Processor
80486DX
Processor Speed
25/33MHz
Chip Set
Micronics
Max. Onboard DRAM
64MB
Cache
64/128/256KB
BIOS
Phoenix
Dimensions
350mm x 304mm
I/O Options
None
NPU Options
4167

CONNECTIONS
Purpose
Location
Purpose
Location
Auxiliary keyboard
J2
Reset switch
W5
External battery
J3
Turbo switch
W6
Speaker
J15
Turbo LED
W7
Power LED & keylock
J16

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Factory configured - do not alter
SW1/1
On
»
BIOS select onboard
SW1/2
Off

BIOS select external
SW1/2
On
»
CPU speed select 33MHz
SW1/4
Off

CPU speed select 25MHz
SW1/4
On
»
Factory configured - do not alter
SW1/5
Off
»
Factory configured - do not alter
SW1/6
Off
»
Monitor type select color
SW1/7
On

Monitor type select monochrome
SW1/7
Off
»
Factory configured - do not alter
SW2/5
Off
»
Video BIOS cacheing enabled
SW2/6
Off

Video BIOS cacheing disabled
SW2/6
On
»
Address range 13MB to 15MB cacheable
SW2/7
Off

Address range 13MB to 15MB non-cacheable
SW2/7
On
»
Factory configured - do not alter
SW2/8
Off
»
Factory configured - do not alter
W1
Off
»
Slot 8 standard select EISA
W100
pins 1 & 2 closed

Slot 8 standard select ISA
W100
pins 2 & 3 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
4MB
(4) 1M x 9
NONE
NONE
NONE
8MB
(4) 1M x 9
(4) 1M x 9
NONE
NONE
12MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
NONE
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
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
SW2/1
SW2/2
SW2/3
SW2/4
SW2/5
4MB
On
On
On
On
On
8MB
Off
On
On
On
On
12MB
On
Off
On
On
On
16MB
Off
Off
On
On
Off
16MB
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

CACHE CONFIGURATION
Size
Bank 0
Bank 1
64KB
(4) 8K x 8
(4) 8K x 8
128KB
(4) 32K x 8
NONE
256KB
(4) 32K x 8
(4) 32K x 8

CACHE JUMPER/SWITCH CONFIGURATION
Size
SW1/3
SW1/8
W3
W4
64KB
Off
Off
pins 1 & 2 closed
pins 1 & 2 closed
128KB
On
On
pins 1 & 2 closed
pins 2 & 3 closed
256KB
On
Off
pins 2 & 3 closed
pins 2 & 3 closed

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80486-EISA Motherboard Settings and Configuration

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Processor	80486DX
Processor Speed	25/33MHz
Chip Set	Micronics
Max. Onboard DRAM	64MB
Cache	64/128/256KB
BIOS	Phoenix
Dimensions	350mm x 304mm
I/O Options	None
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Auxiliary keyboard	J2	Reset switch	W5
External battery	J3	Turbo switch	W6
Speaker	J15	Turbo LED	W7
Power LED & keylock	J16

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Factory configured - do not alter	SW1/1	On
»	BIOS select onboard	SW1/2	Off
	BIOS select external	SW1/2	On
»	CPU speed select 33MHz	SW1/4	Off
	CPU speed select 25MHz	SW1/4	On
»	Factory configured - do not alter	SW1/5	Off
»	Factory configured - do not alter	SW1/6	Off
»	Monitor type select color	SW1/7	On
	Monitor type select monochrome	SW1/7	Off
»	Factory configured - do not alter	SW2/5	Off
»	Video BIOS cacheing enabled	SW2/6	Off
	Video BIOS cacheing disabled	SW2/6	On
»	Address range 13MB to 15MB cacheable	SW2/7	Off
	Address range 13MB to 15MB non-cacheable	SW2/7	On
»	Factory configured - do not alter	SW2/8	Off
»	Factory configured - do not alter	W1	Off
»	Slot 8 standard select EISA	W100	pins 1 & 2 closed
	Slot 8 standard select ISA	W100	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(4) 1M x 9	NONE	NONE	NONE
8MB	(4) 1M x 9	(4) 1M x 9	NONE	NONE
12MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	NONE
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
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	SW2/1	SW2/2	SW2/3	SW2/4	SW2/5
4MB	On	On	On	On	On
8MB	Off	On	On	On	On
12MB	On	Off	On	On	On
16MB	Off	Off	On	On	Off
16MB	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

CACHE CONFIGURATION
Size	Bank 0	Bank 1
64KB	(4) 8K x 8	(4) 8K x 8
128KB	(4) 32K x 8	NONE
256KB	(4) 32K x 8	(4) 32K x 8

CACHE JUMPER/SWITCH CONFIGURATION
Size	SW1/3	SW1/8	W3	W4
64KB	Off	Off	pins 1 & 2 closed	pins 1 & 2 closed
128KB	On	On	pins 1 & 2 closed	pins 2 & 3 closed
256KB	On	Off	pins 2 & 3 closed	pins 2 & 3 closed