DFI-386SX Motherboard Settings and Configuration

DIAMOND FLOWER, INC.

DFI-386SX

Processor
80386SX
Processor Speed
16MHz
Chip Set
Intel
Max. Onboard DRAM
8MB
Cache
None
BIOS
DFI
Dimensions
330mm x 220mm
I/O Options
None
NPU Options
80387SX

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J1
Turbo LED
J12
Turbo switch
J2/J11
Power LED & keylock
J13
Reset switch
J3/J9
Auxiliary keyboard
J14
Speaker
J10

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Battery select internal
J4
pins 2 & 3 closed

Battery select external
J4
pins 1 & 2 closed
»
Monitor type select monochrome
J5
pins 2 & 3 closed

Monitor type select color
J5
pins 1 & 2 closed
»
BIOS type select 27256
J6
pins 2 & 3 closed

BIOS type select 27512
J6
pins 1 & 2 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
512KB
(18 41256
NONE
NONE
NONE
512KB
NONE
NONE
(2) 256K x 9
NONE
1MB
(18) 41256
(18) 41256
NONE
NONE
1MB
NONE
NONE
(2) 256K x 9
(2) 256K x 9
2MB
(18) 41256
(18) 41256
(2) 256K x 9
(2) 256K x 9
2MB
(18) 411000
NONE
NONE
NONE
2MB
NONE
NONE
(2) 1M x 9
NONE
4MB
(18) 411000
(18) 411000
NONE
NONE
4MB
NONE
NONE
(2) 1M x 9
(2) 1M x 9
8MB
(18) 411000
(18) 411000
(2) 1M x 9
(2) 1M x 9

DRAM JUMPER CONFIGURATION
Size
J15
J16
J17
J18
J19
J20
512KB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
512KB
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
1MB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
1MB
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
2MB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2MB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2MB
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
4MB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
4MB
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
8MB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
Note: Pins designated should be in the closed position.

DRAM MODE CONFIGURATION
Mode
Maximum active pages
DRAM type
J7
J8
Fast page 1 (FP1)
4
100ns
Open
Open
Fast page 2 (FP2)
1
100ns
Open
Closed
Slow page 1 (SP1)
4
100ns
Closed
Open
Slow page 2 (SP2)
4
120ns
Closed
Closed
Note:In order to use fast page modes, the DRAM chips must meet the following specifications:
tCAS (access time)=35ns , tCAC (pulse width)=35ns , tCP (precharge time)=20ns.

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DFI-386SX Motherboard Settings and Configuration

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Processor	80386SX
Processor Speed	16MHz
Chip Set	Intel
Max. Onboard DRAM	8MB
Cache	None
BIOS	DFI
Dimensions	330mm x 220mm
I/O Options	None
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Turbo LED	J12
Turbo switch	J2/J11	Power LED & keylock	J13
Reset switch	J3/J9	Auxiliary keyboard	J14
Speaker	J10

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Battery select internal	J4	pins 2 & 3 closed
	Battery select external	J4	pins 1 & 2 closed
»	Monitor type select monochrome	J5	pins 2 & 3 closed
	Monitor type select color	J5	pins 1 & 2 closed
»	BIOS type select 27256	J6	pins 2 & 3 closed
	BIOS type select 27512	J6	pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
512KB	(18 41256	NONE	NONE	NONE
512KB	NONE	NONE	(2) 256K x 9	NONE
1MB	(18) 41256	(18) 41256	NONE	NONE
1MB	NONE	NONE	(2) 256K x 9	(2) 256K x 9
2MB	(18) 41256	(18) 41256	(2) 256K x 9	(2) 256K x 9
2MB	(18) 411000	NONE	NONE	NONE
2MB	NONE	NONE	(2) 1M x 9	NONE
4MB	(18) 411000	(18) 411000	NONE	NONE
4MB	NONE	NONE	(2) 1M x 9	(2) 1M x 9
8MB	(18) 411000	(18) 411000	(2) 1M x 9	(2) 1M x 9

DRAM JUMPER CONFIGURATION
Size	J15	J16	J17	J18	J19	J20
512KB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
512KB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
1MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
1MB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
2MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
2MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
2MB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
4MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
4MB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
8MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated should be in the closed position.

DRAM MODE CONFIGURATION
Mode	Maximum active pages	DRAM type	J7	J8
Fast page 1 (FP1)	4	100ns	Open	Open
Fast page 2 (FP2)	1	100ns	Open	Closed
Slow page 1 (SP1)	4	100ns	Closed	Open
Slow page 2 (SP2)	4	120ns	Closed	Closed
Note:In order to use fast page modes, the DRAM chips must meet the following specifications: tCAS (access time)=35ns , tCAC (pulse width)=35ns , tCP (precharge time)=20ns.