ACER, INC. L50 Data bus: 32-bit VL-bus Size: Three-quarter length, full-height card Hard drive supported: Four IDE(AT) drives Floppy drives supported: Two 360KB, 720KB, 1.2MB, 1.44MB, or 2.88MB drives [Image] CONNECTIONS Function Location 40-pin primary IDE(AT) connector CN1 40-pin secondary IDE(AT) connector CN2 34-pin cable connector - floppy drive CN3 10-pin serial port 1 CN4 10-pin serial port 2 CN5 16-pin game port CN6 15-pin video port CN7 25-pin parallel port CN8 VESA feature connector CN9 4-pin connector - drive active LED JP28 VGA CONFIGURATION Mode JP4 JP5 » Enabled pins 1 & 2 closed pins 1 & 2 closed Disabled pins 2 & 3 closed pins 2 & 3 closed USER CONFIGURABLE SETTINGS Function Location Setting » IRQ9 disabled JP3/pins 1 & 2 closed IRQ9 enabled JP3/pins 2 & 3 closed » Primary IDE(AT) interface JP6/pins 1 & 2 closed enabled Primary IDE(AT) interface JP6/pins 2 & 3 closed disabled » Floppy drive interface enabled JP11/pins 1 & 2 closed Floppy drive interface JP11/pins 2 & 3 closed disabled » Ignores cable select JP12/pins 1 & 2 closed configuration for floppy drives Checks for cable select JP12/pins 2 & 3 closed configuration » Game port enabled JP13/pins 1 & 2 closed Game port disabled JP13/pins 2 & 3 closed » Parallel port IRQ 7 select JP18/pins 1 & 2 closed Parallel port IRQ 5 select JP18/pins 2 & 3 closed PARALLEL PORT ADDRESS SELECTION LPT JP14 JP15 » LPT1 (378h) pins 1 & 2 closed pins 1 & 2 closed LPT2 (278h) pins 1 & 2 closed pins 2 & 3 closed LPT3 (3BCh) pins 2 & 3 closed pins 2 & 3 closed Disabled pins 2 & 3 closed pins 1 & 2 closed SERIAL PORT 1 ADDRESS SELECTION COM JP21 JP22 » COM1 (3F8h) pins 1 & 2 closed pins 1 & 2 closed COM2 (2F8h) pins 1 & 2 closed pins 2 & 3 closed COM3 (3E8h) pins 2 & 3 closed pins 1 & 2 closed Disabled pins 2 & 3 closed pins 2 & 3 closed SERIAL PORT 2 ADDRESS SELECTION COM JP23 JP24 » COM2 (2F8h) pins 1 & 2 closed pins 1 & 2 closed COM1 (3F8h) pins 1 & 2 closed pins 2 & 3 closed COM4 (2E8h) pins 2 & 3 closed pins 1 & 2 closed Disabled pins 2 & 3 closed pins 2 & 3 closed SERIAL PORT 1 INTERRUPT SELECTION IRQ JP25/Pins 1 & 2 JP26/Pins 1 & 2 JP27/Pins 1 & 2 » IRQ4 closed open open IRQ3 open closed open IRQ5 open open closed SERIAL PORT 2 INTERRUPT SELECTION IRQ JP25/Pins 2 & 3 JP26/Pins 2 & 3 JP27/Pins 2 & 3 » IRQ3 open closed open IRQ4 closed open open IRQ5 open open closed PARALLEL PORT MODE CONFIGURATION Mode JP16 JP17 » SPP pins 1 & 2 closed pins 1 & 2 closed EPP pins 1 & 2 closed pins 2 & 3 closed ECP pins 2 & 3 closed pins 1 & 2 closed DMA SELECTION FOR ECP MODE Channel JP19 JP20 » DMA 3 pins 1 & 2 closed pins 1 & 2 closed DMA 1 pins 2 & 3 closed pins 2 & 3 closed MEMORY ADDRESSING Linear Address JP1 JP2 » 64MB pins 1 & 2 closed pins 1 & 2 closed 2GB pins 2 & 3 closed pins 2 & 3 closed SECONDARY IDE ADDRESS SELECTION Address JP7 JP8 » Secondary pins 1 & 2 closed pins 1 & 2 closed Primary pins 1 & 2 closed pins 2 & 3 closed Disabled pins 2 & 3 closed pins 2 & 3 closed SECONDARY IDE INTERRUPT SELECTION IRQ JP9 JP10 » 15 pins 1 & 2 closed pins 1, 2 & 3 open 10 pins 1, 2 & 3 open pins 1 & 2 closed 12 pins 1, 2 & 3 open pins 2 & 3 closed 14 pins 2 & 3 closed pins 1, 2 & 3 open DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (8) 256K x 4 None 2MB (8) 256K x 4 (2) 256K x 16