386-20/25V Motherboard Settings and Configuration

FIRST INTERNATIONAL COMPUTER, INC.

386-20/25V

Processor
80386DX
Processor Speed
20/25MHz
Chip Set
Symphony
Max. Onboard DRAM
8MB
Cache
None
BIOS
Award/Phoenix
Dimensions
330mm x 218mm
I/O Options
32-bit external memory card slot
NPU Options
80387/3167

CONNECTIONS
Purpose
Location
Purpose
Location
Reset switch
J12
Power LED & keylock
J15
Speaker
J13
32-bit external memory card
S1
Turbo LED
J14

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Factory configured - do not alter
J3
Open
»
Factory configured - do not alter
J4
Open
»
Memory select 2 wait states/ I/O select 6 wait states
J5
Closed

Memory select 1 wait state/ I/O select 4 wait states
J5
Open

BIOS type select 27256
J6
pins 1 & 2 closed

BIOS type select 27512
J6
pins 2 & 3 closed

CPU speed select 20MHz
J9
Open

CPU speed select 25MHz
J9
Closed
»
CPU speed select switchable from keyboard
J15
pins 2 & 3 closed

CPU speed select fast
J15
pins 1 & 2 closed

CPU speed select slow
J15
Open

Bus speed select iOSC/2
J17
pins 1 & 2 closed

Bus speed select 8MHz
J17
pins 2 & 3 closed
»
Shadow RAM enabled
SW1/switch 6
closed

Shadow RAM disabled
SW1/switch 6
open

DRAM read select 2 wait states/write select 2 wait states
SW1/switch 7
SW1/switch 8
closed
closed

DRAM read select 2 wait states/write select 1 wait state
SW1/switch 7
SW1/switch 8
closed
open

DRAM read select 1 wait state/write select 1 wait state
SW1/switch 7
SW1/switch 8
open
open

NPU enabled
SW1/switch 9
closed

NPU disabled
SW1/switch 9
open
»
Monitor type select monochrome
SW1/switch 10
open

Monitor type select color
SW1/switch 10
closed

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
6MB
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
NONE
8MB
(4) 1M x 9
(4) 1M x 9
NONE
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
16MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
Note:Banks 2 & 3 are utilized when a 32-bit external memory card is installed at S1.

DRAM JUMPER/SWITCH CONFIGURATION
Size
J7
SW1/1
SW1/2
SW1/3
SW1/4
SW1/5
1MB
2 & 3
Off
Off
Off
Off
Off
2MB
2 & 3
On
Off
Off
Off
Off
3MB
2 & 3
Off
On
Off
Off
Off
4MB
2 & 3
On
On
Off
Off
Off
4MB
1 & 2
Off
Off
On
On
On
6MB
2 & 3
Off
On
On
Off
Off
8MB
1 & 2
On
Off
On
On
On
10MB
2 & 3
On
On
On
Off
Off
12MB
1 & 2
Off
On
On
On
On
16MB
1 & 2
On
On
On
On
On
Note:Pins designated should be in the closed position.

DRAM READ/WRITE CONFIGURATION
Wait state
Read state
SW1/7
SW1/8
2
2
On
On
2
1
On
Off
1
1
Off
Off

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Processor	80386DX
Processor Speed	20/25MHz
Chip Set	Symphony
Max. Onboard DRAM	8MB
Cache	None
BIOS	Award/Phoenix
Dimensions	330mm x 218mm
I/O Options	32-bit external memory card slot
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J12	Power LED & keylock	J15
Speaker	J13	32-bit external memory card	S1
Turbo LED	J14

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	J3	Open
»	Factory configured - do not alter	J4	Open
»	Memory select 2 wait states/ I/O select 6 wait states	J5	Closed
	Memory select 1 wait state/ I/O select 4 wait states	J5	Open
	BIOS type select 27256	J6	pins 1 & 2 closed
	BIOS type select 27512	J6	pins 2 & 3 closed
	CPU speed select 20MHz	J9	Open
	CPU speed select 25MHz	J9	Closed
»	CPU speed select switchable from keyboard	J15	pins 2 & 3 closed
	CPU speed select fast	J15	pins 1 & 2 closed
	CPU speed select slow	J15	Open
	Bus speed select iOSC/2	J17	pins 1 & 2 closed
	Bus speed select 8MHz	J17	pins 2 & 3 closed
»	Shadow RAM enabled	SW1/switch 6	closed
	Shadow RAM disabled	SW1/switch 6	open
	DRAM read select 2 wait states/write select 2 wait states	SW1/switch 7 SW1/switch 8	closed closed
	DRAM read select 2 wait states/write select 1 wait state	SW1/switch 7 SW1/switch 8	closed open
	DRAM read select 1 wait state/write select 1 wait state	SW1/switch 7 SW1/switch 8	open open
	NPU enabled	SW1/switch 9	closed
	NPU disabled	SW1/switch 9	open
»	Monitor type select monochrome	SW1/switch 10	open
	Monitor type select color	SW1/switch 10	closed

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
6MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	NONE
8MB	(4) 1M x 9	(4) 1M x 9	NONE	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
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
Note:Banks 2 & 3 are utilized when a 32-bit external memory card is installed at S1.

DRAM JUMPER/SWITCH CONFIGURATION
Size	J7	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5
1MB	2 & 3	Off	Off	Off	Off	Off
2MB	2 & 3	On	Off	Off	Off	Off
3MB	2 & 3	Off	On	Off	Off	Off
4MB	2 & 3	On	On	Off	Off	Off
4MB	1 & 2	Off	Off	On	On	On
6MB	2 & 3	Off	On	On	Off	Off
8MB	1 & 2	On	Off	On	On	On
10MB	2 & 3	On	On	On	Off	Off
12MB	1 & 2	Off	On	On	On	On
16MB	1 & 2	On	On	On	On	On
Note:Pins designated should be in the closed position.

DRAM READ/WRITE CONFIGURATION
Wait state	Read state	SW1/7	SW1/8
2	2	On	On
2	1	On	Off
1	1	Off	Off