CMPD4800AIO EISA VESA ZIF Motherboard Settings and Configuration

ACER, INC.

CMPD4800AIO EISA VESA ZIF

Processor
80486DX/80486DX2
Processor Speed
25/33/40/50(internal)/50/66(internal)MHz
Chip Set
OPTI
Video Chip Set
None
Maximum Onboard Memory
Unidentified
Maximum Video Memory
None
Cache
64/128/256/512/1024KB
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
32-bit VESA local bus slot, floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Serial port 1
P4
Reset switch
P9
Serial port 2
P5
IDE interface LED
P10
Parallel port
P6
Speaker
P11
IDE interface
P7
Power LED & keylock
P12
Floppy drive interface
P8
32-bit VESA local bus slot
SL1

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
IDE I/O channel RDY signal select none
J1
Open

IDE I/O channel RDY signal select drive
J1
Closed
»
Flash BIOS programming disabled
J2
Open

Flash BIOS programming enabled
J2
Closed
»
Factory configured - do not alter
J3
Unidentified
»
Factory configured - do not alter
J4
Unidentified
»
ISA BUS ready timing ISA RDY
J26
Open

ISA BUS ready timing EISA RDY
J26
Closed
»
READY RTN generation select local bus
J28
Pins 1 & 2 closed

READY RTN generation select system
J28
Pins 2 & 3 closed
»
VL BUS not delayed
J29
Closed

VL BUS delayed
J29
Open
»
Monitor type select color
J31
Closed

Monitor type select monochrome
J31
Open

DRAM CONFIGURATION
Note: The maximum amount of memory is unidentified.

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG (U61)
TAG
64KB
(4) 8K x 8
(4) 8K x 8
(1) 64K x 1
Unidentified
128KB
(4) 32K x 8
None
(1) 64K x 1
Unidentified
256KB
(4) 32K x 8
(4) 32K x 8
(1) 64K x 1
Unidentified
512KB
(4) 64K x 8
(4) 64K x 8
(1) 64K x 1
Unidentified
1MB
(4) 128K x 8
(4) 128K x 8
(1) 64K x 1
Unidentified
Note: The location of banks 0 & 1 is unidentified.

CACHE JUMPER CONFIGURATION
Size
J19
J20
J21
J22
J23
64KB
Open
Open
Open
Open
Open
128KB
Open
Closed
Open
Open
Open
256KB
Closed
Closed
Open
Open
Open
512KB
Closed
Closed
Closed
Open
Closed
1MB
Closed
Closed
Closed
Closed
Closed

CACHE JUMPER CONFIGURATION(CON’T)
Size
J24
J25
J27
J30
64KB
Open
Open
Pins 2 & 3 closed
Pins 2 & 3 closed
128KB
Open
Closed
Pins 1 & 2 closed
Pins 1 & 2 closed
256KB
Closed
Closed
Pins 2 & 3 closed
Pins 2 & 3 closed
512KB
Closed
Closed
Pins 1 & 2 closed
Pins 1 & 2 closed
1MB
Closed
Closed
Pins 2 & 3 closed
Pins 2 & 3 closed

CPU SPEED SELECTION
Speed
J11
J12
J13
J15
J16
J17
J18
25MHz
2 & 3
Open
Open
Closed
Open
Open
Closed
33MHz
2 & 3
Closed
Open
Closed
Open
Open
Open
40MHz
2 & 3
Open
Closed
Open
Open
Open
Closed
50iMHz
2 & 3
Open
Open
Closed
Open
Open
Closed
50MHz
1 & 2
Closed
Closed
Closed
Open
Open
Closed
66iMHz
2 & 3
Closed
Open
Closed
Open
Open
Open
Note: Pins designated should be in the closed position.

DMA CHANNEL SELECTION
Channel
J5
J6
J7
J8
J9
J10
5
Open
Open
Closed
Closed
Open
Open
6
Open
Closed
Open
Open
Closed
Open
7
Closed
Open
Open
Open
Open
Closed

VL BUS WAIT STATE SELECTION
Setting
J14
»
0
Open

1
Closed

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Processor	80486DX/80486DX2
Processor Speed	25/33/40/50(internal)/50/66(internal)MHz
Chip Set	OPTI
Video Chip Set	None
Maximum Onboard Memory	Unidentified
Maximum Video Memory	None
Cache	64/128/256/512/1024KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slot, floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	P4	Reset switch	P9
Serial port 2	P5	IDE interface LED	P10
Parallel port	P6	Speaker	P11
IDE interface	P7	Power LED & keylock	P12
Floppy drive interface	P8	32-bit VESA local bus slot	SL1

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	IDE I/O channel RDY signal select none	J1	Open
	IDE I/O channel RDY signal select drive	J1	Closed
»	Flash BIOS programming disabled	J2	Open
	Flash BIOS programming enabled	J2	Closed
»	Factory configured - do not alter	J3	Unidentified
»	Factory configured - do not alter	J4	Unidentified
»	ISA BUS ready timing ISA RDY	J26	Open
	ISA BUS ready timing EISA RDY	J26	Closed
»	READY RTN generation select local bus	J28	Pins 1 & 2 closed
	READY RTN generation select system	J28	Pins 2 & 3 closed
»	VL BUS not delayed	J29	Closed
	VL BUS delayed	J29	Open
»	Monitor type select color	J31	Closed
	Monitor type select monochrome	J31	Open

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG (U61)	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(1) 64K x 1	Unidentified
128KB	(4) 32K x 8	None	(1) 64K x 1	Unidentified
256KB	(4) 32K x 8	(4) 32K x 8	(1) 64K x 1	Unidentified
512KB	(4) 64K x 8	(4) 64K x 8	(1) 64K x 1	Unidentified
1MB	(4) 128K x 8	(4) 128K x 8	(1) 64K x 1	Unidentified
Note: The location of banks 0 & 1 is unidentified.

CACHE JUMPER CONFIGURATION
Size	J19	J20	J21	J22	J23
64KB	Open	Open	Open	Open	Open
128KB	Open	Closed	Open	Open	Open
256KB	Closed	Closed	Open	Open	Open
512KB	Closed	Closed	Closed	Open	Closed
1MB	Closed	Closed	Closed	Closed	Closed

CACHE JUMPER CONFIGURATION(CON’T)
Size	J24	J25	J27	J30
64KB	Open	Open	Pins 2 & 3 closed	Pins 2 & 3 closed
128KB	Open	Closed	Pins 1 & 2 closed	Pins 1 & 2 closed
256KB	Closed	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed
512KB	Closed	Closed	Pins 1 & 2 closed	Pins 1 & 2 closed
1MB	Closed	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed

CPU SPEED SELECTION
Speed	J11	J12	J13	J15	J16	J17	J18
25MHz	2 & 3	Open	Open	Closed	Open	Open	Closed
33MHz	2 & 3	Closed	Open	Closed	Open	Open	Open
40MHz	2 & 3	Open	Closed	Open	Open	Open	Closed
50iMHz	2 & 3	Open	Open	Closed	Open	Open	Closed
50MHz	1 & 2	Closed	Closed	Closed	Open	Open	Closed
66iMHz	2 & 3	Closed	Open	Closed	Open	Open	Open
Note: Pins designated should be in the closed position.

DMA CHANNEL SELECTION
Channel	J5	J6	J7	J8	J9	J10
5	Open	Open	Closed	Closed	Open	Open
6	Open	Closed	Open	Open	Closed	Open
7	Closed	Open	Open	Open	Open	Closed

VL BUS WAIT STATE SELECTION
Setting		J14
»	0	Open
	1	Closed