MFB-A IO card Settings and Configuration

ACER, INC.

MFB-A

Card Type
Multi I/O card
Chipset/Controller
Unidentified
I/O Options
Memory, game port, parallel port, serial port (2).
Maximum DRAM
3MB

CONNECTIONS
Purpose
Location
Purpose
Location
Game port
J2
Parallel port
J5
Serial port 2 - internal
J3
MME-A connector
N/A
Serial port 1 - external
J4

Note: The MME-A connector is not identified on manufacturer’s documentation

GAME PORT CONFIGURATION
Setting
SW3/6
»
Enabled
On

Disabled
Off

PARALLEL PORT CONFIGURATION
LPT/Address/IRQ
SW3/4
SW3/5
JP2
»
LPT1/378h/IRQ7
On
Off
Pins 1 & 2 closed

LPT1/378h/IRQ5
On
Off
Pins 2 & 3 closed

LPT2/278h/IRQ7
Off
On
Pins 1 & 2 closed

LPT2/278h/IRQ5
Off
On
Pins 2 & 3 closed

Disabled
Off
Off
N/A

SERIAL PORT 1 & 2 CONFIGURATION
Port 1
Port 2
SW3/1
SW3/2
SW3/3
»
COM1/3F8h
COM2/2F8h
On
Off
On

COM2/2F8h
Disabled
Off
On
Off

Disabled
Disabled
Off
Off
Off

SERIAL PORT 1 & 2 INTERRUPT SELECT
Port 1
Port 2
JP5
JP6
»
IRQ4
IRQ3
Pins 2 & 3 closed
Closed

IRQ3
Disabled
Pins 1 & 2 closed
Open

Disabled
Disabled
Open
Open

SERIAL PORT 1 TEST
Port 1
JP3
JP4
JP10
»
DCD signal high
Pins 2 & 3 closed
N/A
N/A

DCD signal ground
Pins 1 & 2 closed
N/A
N/A
»
DSR signal high
N/A
Pins 2 & 3 closed
N/A

DSR signal ground
N/A
Pins 1 & 2 closed
N/A
»
CTS signal high
N/A
N/A
Pins 1 & 2 closed

CTS signal ground
N/A
N/A
Pins 2 & 3 closed

SERIAL PORT 2 TEST
Port 2
JP7
JP8
JP9
»
DCD signal high
Pins 1 & 2 closed
N/A
N/A

DCD signal ground
Pins 2 & 3 closed
N/A
N/A
»
DSR signal high
N/A
Pins 1 & 2 closed
N/A

DSR signal ground
N/A
Pins 2 & 3 closed
N/A
»
CTS signal high
N/A
N/A
Pins 1 & 2 closed

CTS signal ground
N/A
N/A
Pins 2 & 3 closed

PARITY CHECK
Setting
JP1
»
Enabled
Closed

Disabled
Open

STARTING MEMORY ADDRESS
Memory/Address
SW1/1
SW1/2
SW1/3
SW1/4
SW1/5
SW1/6
256KB/040000h
On
On
On
On
On
Off
512KB/080000h
Off
On
On
On
On
On
1MB/100000h
On
Off
On
On
On
On
1.5MB/180000h
Off
Off
On
On
On
On
2MB/200000h
On
On
Off
On
On
On
2.5MB/280000h
Off
On
Off
On
On
On
3MB/300000h
On
Off
Off
On
On
On
3.5MB/380000h
Off
Off
Off
On
On
On
4MB/400000h
On
On
On
Off
On
On
4.5MB/480000h
Off
On
On
Off
On
On
5MB/500000h
On
Off
On
Off
On
On
5.5MB/580000h
Off
Off
On
Off
On
On

STARTING MEMORY ADDRESS
Memory/Address
SW1/1
SW1/2
SW1/3
SW1/4
SW1/5
SW1/6
6MB/600000h
On
On
Off
Off
On
On
6.5MB/680000h
Off
On
Off
Off
On
On
7MB/700000h
On
Off
Off
Off
On
On
7.5MB/780000h
Off
Off
Off
Off
On
On
8MB/800000h
On
On
On
On
Off
On
8.5MB/880000h
Off
On
On
On
Off
On
9MB/900000h
On
Off
On
On
Off
On
9.5MB/980000h
Off
Off
On
On
Off
On
10MB/A00000h
On
On
Off
On
Off
On
10.5MB/A80000h
Off
On
Off
On
Off
On
11MB/B00000h
On
Off
Off
On
Off
On
11.5MB/B80000h
Off
Off
Off
On
Off
On
12MB/C00000h
On
On
On
Off
Off
On
12.5MB/C80000h
Off
On
On
Off
Off
On
13MB/D00000h
On
Off
On
Off
Off
On
13.5.5MB/D80000h
Off
Off
On
Off
Off
On
14MB/E00000h
On
On
Off
Off
Off
On
14.5MB/E80000h
Off
On
Off
Off
Off
On
15MB/F00000h
On
Off
Off
Off
Off
On
15.5MB/F80000h
Off
Off
Off
Off
Off
On

MEMORY CONFIGURATION
Bank 0
Bank 1
Bank 2
Bank 3
Bank 4
Bank 5
SW2/1
SW2/2
SW2/3
SW2/4
128KB
N/A
N/A
N/A
N/A
N/A
On
On
On
Off
512KB
N/A
N/A
N/A
N/A
N/A
Off
On
On
On
128KB
512KB
N/A
N/A
N/A
N/A
Off
On
On
Off
512KB
512KB
N/A
N/A
N/A
N/A
On
Off
On
On
128KB
512KB
512KB
N/A
N/A
N/A
On
Off
On
Off
512KB
512KB
512KB
N/A
N/A
N/A
Off
Off
On
On
128KB
512KB
512KB
512KB
N/A
N/A
Off
Off
On
Off
128KB
512KB
512KB
512KB
N/A
N/A
On
On
Off
On
128KB
512KB
512KB
512KB
512KB
N/A
On
On
Off
Off
512KB
512KB
512KB
512KB
512KB
N/A
Off
On
Off
On
128KB
512KB
512KB
512KB
512KB
512KB
Off
On
Off
Off
512KB
512KB
512KB
512KB
512KB
512KB
On
Off
Off
On
Notes:(1) Banks 3, 4 & 5 are located on supplemental card MME-A.
(2) 4164-type chips are only used in Bank 0 and fill system base RAM from 512KB to 640KB.
(3) 41256/120ns-chips are used in all banks.

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MFB-A IO card Settings and Configuration

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Card Type	Multi I/O card
Chipset/Controller	Unidentified
I/O Options	Memory, game port, parallel port, serial port (2).
Maximum DRAM	3MB

CONNECTIONS
Purpose	Location	Purpose	Location
Game port	J2	Parallel port	J5
Serial port 2 - internal	J3	MME-A connector	N/A
Serial port 1 - external	J4
Note: The MME-A connector is not identified on manufacturer’s documentation

GAME PORT CONFIGURATION
Setting		SW3/6
»	Enabled	On
	Disabled	Off

PARALLEL PORT CONFIGURATION
LPT/Address/IRQ		SW3/4	SW3/5	JP2
»	LPT1/378h/IRQ7	On	Off	Pins 1 & 2 closed
	LPT1/378h/IRQ5	On	Off	Pins 2 & 3 closed
	LPT2/278h/IRQ7	Off	On	Pins 1 & 2 closed
	LPT2/278h/IRQ5	Off	On	Pins 2 & 3 closed
	Disabled	Off	Off	N/A

SERIAL PORT 1 & 2 CONFIGURATION
Port 1		Port 2	SW3/1	SW3/2	SW3/3
»	COM1/3F8h	COM2/2F8h	On	Off	On
	COM2/2F8h	Disabled	Off	On	Off
	Disabled	Disabled	Off	Off	Off

SERIAL PORT 1 & 2 INTERRUPT SELECT
Port 1		Port 2	JP5	JP6
»	IRQ4	IRQ3	Pins 2 & 3 closed	Closed
	IRQ3	Disabled	Pins 1 & 2 closed	Open
	Disabled	Disabled	Open	Open

SERIAL PORT 1 TEST
Port 1		JP3	JP4	JP10
»	DCD signal high	Pins 2 & 3 closed	N/A	N/A
	DCD signal ground	Pins 1 & 2 closed	N/A	N/A
»	DSR signal high	N/A	Pins 2 & 3 closed	N/A
	DSR signal ground	N/A	Pins 1 & 2 closed	N/A
»	CTS signal high	N/A	N/A	Pins 1 & 2 closed
	CTS signal ground	N/A	N/A	Pins 2 & 3 closed

SERIAL PORT 2 TEST
Port 2		JP7	JP8	JP9
»	DCD signal high	Pins 1 & 2 closed	N/A	N/A
	DCD signal ground	Pins 2 & 3 closed	N/A	N/A
»	DSR signal high	N/A	Pins 1 & 2 closed	N/A
	DSR signal ground	N/A	Pins 2 & 3 closed	N/A
»	CTS signal high	N/A	N/A	Pins 1 & 2 closed
	CTS signal ground	N/A	N/A	Pins 2 & 3 closed

PARITY CHECK
Setting		JP1
»	Enabled	Closed
	Disabled	Open

STARTING MEMORY ADDRESS
Memory/Address	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6
256KB/040000h	On	On	On	On	On	Off
512KB/080000h	Off	On	On	On	On	On
1MB/100000h	On	Off	On	On	On	On
1.5MB/180000h	Off	Off	On	On	On	On
2MB/200000h	On	On	Off	On	On	On
2.5MB/280000h	Off	On	Off	On	On	On
3MB/300000h	On	Off	Off	On	On	On
3.5MB/380000h	Off	Off	Off	On	On	On
4MB/400000h	On	On	On	Off	On	On
4.5MB/480000h	Off	On	On	Off	On	On
5MB/500000h	On	Off	On	Off	On	On
5.5MB/580000h	Off	Off	On	Off	On	On

MEMORY CONFIGURATION
Bank 0	Bank 1	Bank 2	Bank 3	Bank 4	Bank 5	SW2/1	SW2/2	SW2/3	SW2/4
128KB	N/A	N/A	N/A	N/A	N/A	On	On	On	Off
512KB	N/A	N/A	N/A	N/A	N/A	Off	On	On	On
128KB	512KB	N/A	N/A	N/A	N/A	Off	On	On	Off
512KB	512KB	N/A	N/A	N/A	N/A	On	Off	On	On
128KB	512KB	512KB	N/A	N/A	N/A	On	Off	On	Off
512KB	512KB	512KB	N/A	N/A	N/A	Off	Off	On	On
128KB	512KB	512KB	512KB	N/A	N/A	Off	Off	On	Off
128KB	512KB	512KB	512KB	N/A	N/A	On	On	Off	On
128KB	512KB	512KB	512KB	512KB	N/A	On	On	Off	Off
512KB	512KB	512KB	512KB	512KB	N/A	Off	On	Off	On
128KB	512KB	512KB	512KB	512KB	512KB	Off	On	Off	Off
512KB	512KB	512KB	512KB	512KB	512KB	On	Off	Off	On
Notes:(1) Banks 3, 4 & 5 are located on supplemental card MME-A.
(2) 4164-type chips are only used in Bank 0 and fill system base RAM from 512KB to 640KB.
(3) 41256/120ns-chips are used in all banks.