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 [Image] CONNECTIONS Purpose Location Purpose Location Game port J2 Parallel port J5 Serial port 2 - J3 MME-A connector N/A internal Serial port 1 - J4 external 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 Open closed Disabled Disabled Open Open SERIAL PORT 1 TEST Port 1 JP3 JP4 JP10 » DCD signal high Pins 2 & 3 N/A N/A closed DCD signal Pins 1 & 2 N/A N/A ground closed » DSR signal high N/A Pins 2 & 3 N/A closed DSR signal N/A Pins 1 & 2 N/A ground closed » CTS signal high N/A N/A Pins 1 & 2 closed CTS signal N/A N/A Pins 2 & 3 ground closed SERIAL PORT 2 TEST Port 2 JP7 JP8 JP9 » DCD signal high Pins 1 & 2 N/A N/A closed DCD signal Pins 2 & 3 N/A N/A ground closed » DSR signal high N/A Pins 1 & 2 N/A closed DSR signal N/A Pins 2 & 3 N/A ground closed » CTS signal high N/A N/A Pins 1 & 2 closed CTS signal N/A N/A Pins 2 & 3 ground 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 Bank Bank Bank Bank Bank SW2/1 SW2/2 SW2/3 SW2/4 0 1 2 3 4 5 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.