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 manufacturers 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. | |||||||||