386-I CACHE Motherboard Settings and Configuration

MICRONICS COMPUTERS, INC.

386-I CACHE

Processor
80386DX
Processor Speed
20/25/33MHz
Chip Set
Micronics
Max. Onboard DRAM
None
Cache
32/64KB
BIOS
Phoenix
Dimensions
355mm x 305mm
I/O Options
32-bit external memory card slot
NPU Options
80387/3167

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J2
Auxiliary keyboard
J25
32-bit external memory card
J20
Reset switch
W1
Power LED & keylock
J21
Turbo LED
W9
Speaker
J22
Turbo switch
W15

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Factory configured - do not alter
SW1/1
On
»
NPU select 3167 or none
SW1/2
Off

NPU select 80387
SW1/2
On
»
Factory configured - do not alter
SW1/3
Off
»
Video BIOS shadowing enabled
SW1/4
On

Video BIOS shadowing disabled
SW1/4
Off
»
Factory configured - do not alter
SW1/5
Off
»
Monitor type select color
SW1/6
On

Monitor type select monochrome
SW1/6
Off
»
Cache enabled
SW1/7
On

Cache disabled
SW1/7
Off
»
Factory configured - do not alter
SW1/8
Off
»
Non-cacheable region select E00000 to EFFFFF
W22
pins 1 & 2 closed

Non-cacheable region select D00000 to DFFFFF
W22
Open
»
Factory configured - do not alter
W23
Open
»
Factory configured - do not alter
W30
pins 2 & 3 closed
Note:The location of W23 & W30 are unidentified.

CACHE CONFIGURATION
Size
Organization
Bank 0
Bank 1
32KB
directly mapped
(4) 8K x 8
NONE
64KB
2 way set-associative
(4) 8K x 8
(4) 8K x 8

CACHE JUMPER CONFIGURATION
Size
W12
W13
32KB
pins 1 & 2 closed
pins 1 & 2 closed
64KB
Open
pins 2 & 3 closed

NPU CONFIGURATION
Setting
W7
W8
NPU synchronous with oscillator at U109
pins 1 & 2 closed
Closed
NPU synchronous with CPU
Open
Open

DRAM CONFIGURATION
Size
Bank 0
Bank 1
1MB
(36) 41256
NONE
2MB
(36) 41256
(36) 41256
4MB
(36) 411000
NONE
5MB
(36) 41256
(36) 411000
8MB
(36) 411000
(36) 411000

DRAM JUMPER CONFIGURATION
Size
SW1/1
SW1/2
SW1/3
SW1/4
SW1/5
SW1/6
SW1/7
SW1/8
1MB
On
Off
On
On
On
Off
Off
Off
2MB
Off
On
On
On
On
Off
Off
Off
4MB
On
On
Off
Off
On
Off
Off
Off
5MB
Off
Off
Off
On
On
Off
Off
Off
8MB
Off
On
Off
Off
On
Off
Off
Off

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386-I CACHE Motherboard Settings and Configuration

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Processor	80386DX
Processor Speed	20/25/33MHz
Chip Set	Micronics
Max. Onboard DRAM	None
Cache	32/64KB
BIOS	Phoenix
Dimensions	355mm x 305mm
I/O Options	32-bit external memory card slot
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J2	Auxiliary keyboard	J25
32-bit external memory card	J20	Reset switch	W1
Power LED & keylock	J21	Turbo LED	W9
Speaker	J22	Turbo switch	W15

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Factory configured - do not alter	SW1/1	On
»	NPU select 3167 or none	SW1/2	Off
	NPU select 80387	SW1/2	On
»	Factory configured - do not alter	SW1/3	Off
»	Video BIOS shadowing enabled	SW1/4	On
	Video BIOS shadowing disabled	SW1/4	Off
»	Factory configured - do not alter	SW1/5	Off
»	Monitor type select color	SW1/6	On
	Monitor type select monochrome	SW1/6	Off
»	Cache enabled	SW1/7	On
	Cache disabled	SW1/7	Off
»	Factory configured - do not alter	SW1/8	Off
»	Non-cacheable region select E00000 to EFFFFF	W22	pins 1 & 2 closed
	Non-cacheable region select D00000 to DFFFFF	W22	Open
»	Factory configured - do not alter	W23	Open
»	Factory configured - do not alter	W30	pins 2 & 3 closed
Note:The location of W23 & W30 are unidentified.

CACHE CONFIGURATION
Size	Organization	Bank 0	Bank 1
32KB	directly mapped	(4) 8K x 8	NONE
64KB	2 way set-associative	(4) 8K x 8	(4) 8K x 8

CACHE JUMPER CONFIGURATION
Size	W12	W13
32KB	pins 1 & 2 closed	pins 1 & 2 closed
64KB	Open	pins 2 & 3 closed

NPU CONFIGURATION
Setting	W7	W8
NPU synchronous with oscillator at U109	pins 1 & 2 closed	Closed
NPU synchronous with CPU	Open	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(36) 41256	NONE
2MB	(36) 41256	(36) 41256
4MB	(36) 411000	NONE
5MB	(36) 41256	(36) 411000
8MB	(36) 411000	(36) 411000

DRAM JUMPER CONFIGURATION
Size	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6	SW1/7	SW1/8
1MB	On	Off	On	On	On	Off	Off	Off
2MB	Off	On	On	On	On	Off	Off	Off
4MB	On	On	Off	Off	On	Off	Off	Off
5MB	Off	Off	Off	On	On	Off	Off	Off
8MB	Off	On	Off	Off	On	Off	Off	Off