1100 25/33 Motherboard Settings and Configuration

ACER, INC.

1100 25/33

Processor
80386SX
Processor Speed
25/33MHz
Chip Set
Unidentified
Max. Onboard DRAM
8MB
Cache
None
BIOS
Unidentified
Dimensions
355mm x 305mm
I/O Options
32-bit bus slots (2), parallel port, serial ports (2)
NPU Options
80387SX/3167

CONNECTIONS
Purpose
Location
Purpose
Location
Parallel port
CN1
Turbo LED
J1
Serial port 1
CN2
Reset switch
J2
Serial port 2
CN3
Auxiliary keyboard connector
J3
External battery
CN4
32-bit bus slots
SL1 & SL2

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
RAM address select remap to FA0000 - FDFFFF
JP12
pins 1 & 2 closed

RAM address select do not remap
JP12
pins 2 & 3 closed
»
Serial port pin select COM1 = 25-pin & COM2 = 9-pin
SW2/1
On

Serial port pin select COM1 = 9-pin & COM2 = 25-pin
SW2/1
Off
»
Serial port 1 enabled
SW2/2
Off

Serial port 1 disabled
SW2/2
On
»
Serial port 2 enabled
SW2/3
Off

Serial port 2 disabled
SW2/3
On
»
Parallel port enabled
SW2/4
Off

Parallel port enabled
SW2/4
On
»
BIOS location select RAM BIOS
SW2/8
Off

BIOS location select ROM BIOS
SW2/8
On
»
Monitor type select monochrome
SW2/9
Off

Monitor type select CGA
SW2/9
On
»
DRAM Bank 1 disabled
SW2/10
On

DRAM Bank 1 enabled
SW2/10
Off

DRAM CONFIGURATION
Size
Bank 0
Bank 1
2MB
(4) 512K x 9
NONE
4MB
(4) 512K x 9
(4) 512K x 9
4MB
(4) 1M x 9
NONE
6MB
(4) 512K x 9
(4) 1M x 9
8MB
(4) 1M x 9
(4) 1M x 9

DRAM JUMPER CONFIGURATION
Size
JP13
JP14
JP15
JP16
2MB
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 2 closed
pins 1 & 2 closed
4MB
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 2 closed
pins 1 & 2 closed
4MB
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed
6MB
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
8MB
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed

NPU TYPE CONFIGURATION
Type
JP6
JP7
JP8
None installed
pins 2 & 3 closed
pins 2 & 3 closed
pins 2 & 3 closed
3167
pins 2 & 3 closed
pins 2 & 3 closed
pins 2 & 3 closed
80387SX
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed

BIOS CONFIGURATION
Size
SW1/1
SW1/2
SW1/3
SW1/4
27256
On
Off
Off
On
27128
On
Off
On
Off
27512
Off
On
Off
On

I/O RECOVERY DELAY CONFIGURATION
Delay
SW1/5
SW1/6
SW1/7
SW1/8
0
Off
Off
Off
Off
1
Off
Off
Off
On
2
Off
Off
On
Off
3
Off
Off
On
On
4
Off
On
On
On
5
Off
On
Off
On
6
Off
On
On
Off
7
Off
On
On
On
8
On
Off
Off
Off
9
On
Off
Off
On
10
On
Off
On
Off
11
On
Off
On
On
12
On
On
Off
Off
13
On
On
Off
On
14
On
On
On
Off
15
On
On
On
On

PARALLEL PORT CONFIGURATION
Setting
SW2/5
SW2/6
SW2/7
LPT 1
Off
Off
On
LPT 2
On
On
Off

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1100 25/33 Motherboard Settings and Configuration

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Processor	80386SX
Processor Speed	25/33MHz
Chip Set	Unidentified
Max. Onboard DRAM	8MB
Cache	None
BIOS	Unidentified
Dimensions	355mm x 305mm
I/O Options	32-bit bus slots (2), parallel port, serial ports (2)
NPU Options	80387SX/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Parallel port	CN1	Turbo LED	J1
Serial port 1	CN2	Reset switch	J2
Serial port 2	CN3	Auxiliary keyboard connector	J3
External battery	CN4	32-bit bus slots	SL1 & SL2

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	RAM address select remap to FA0000 - FDFFFF	JP12	pins 1 & 2 closed
	RAM address select do not remap	JP12	pins 2 & 3 closed
»	Serial port pin select COM1 = 25-pin & COM2 = 9-pin	SW2/1	On
	Serial port pin select COM1 = 9-pin & COM2 = 25-pin	SW2/1	Off
»	Serial port 1 enabled	SW2/2	Off
	Serial port 1 disabled	SW2/2	On
»	Serial port 2 enabled	SW2/3	Off
	Serial port 2 disabled	SW2/3	On
»	Parallel port enabled	SW2/4	Off
	Parallel port enabled	SW2/4	On
»	BIOS location select RAM BIOS	SW2/8	Off
	BIOS location select ROM BIOS	SW2/8	On
»	Monitor type select monochrome	SW2/9	Off
	Monitor type select CGA	SW2/9	On
»	DRAM Bank 1 disabled	SW2/10	On
	DRAM Bank 1 enabled	SW2/10	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1
2MB	(4) 512K x 9	NONE
4MB	(4) 512K x 9	(4) 512K x 9
4MB	(4) 1M x 9	NONE
6MB	(4) 512K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9

DRAM JUMPER CONFIGURATION
Size	JP13	JP14	JP15	JP16
2MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed	pins 1 & 2 closed
4MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed	pins 1 & 2 closed
4MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
6MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
8MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed

NPU TYPE CONFIGURATION
Type	JP6	JP7	JP8
None installed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
3167	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
80387SX	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed

BIOS CONFIGURATION
Size	SW1/1	SW1/2	SW1/3	SW1/4
27256	On	Off	Off	On
27128	On	Off	On	Off
27512	Off	On	Off	On

I/O RECOVERY DELAY CONFIGURATION
Delay	SW1/5	SW1/6	SW1/7	SW1/8
0	Off	Off	Off	Off
1	Off	Off	Off	On
2	Off	Off	On	Off
3	Off	Off	On	On
4	Off	On	On	On
5	Off	On	Off	On
6	Off	On	On	Off
7	Off	On	On	On
8	On	Off	Off	Off
9	On	Off	Off	On
10	On	Off	On	Off
11	On	Off	On	On
12	On	On	Off	Off
13	On	On	Off	On
14	On	On	On	Off
15	On	On	On	On

PARALLEL PORT CONFIGURATION
Setting	SW2/5	SW2/6	SW2/7
LPT 1	Off	Off	On
LPT 2	On	On	Off