Parallel Port; Serial Port - Acer Extensa 500 Service Manual

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Parallel Port

Item
Parallel port controller
Number of parallel ports
Location
Connector type
Parallel port function control
Supports ECP
Optional ECP DMA channel
(in BIOS Setup)
Optional parallel port I/O address
(in BIOS Setup)
Optional parallel port IRQ
(in BIOS Setup)

Serial Port

Item
Serial port controller
Number of serial ports
Supports 16550 UART
Connector type
Location
Serial port function control
Optional serial port
(in BIOS Setup)
Optional serial port IRQ
(in BIOS Setup)
22
85
85
85
85
85
60, 75
NS PC97338VJG
1
Rear side
25-pin D-type connector, in female
type.
Enable/Diable by BIOS Setup
Yes (set by BIOS setup)
DMA channel 1
DMA Channel 3
3BCh, 378h, 278h
IRQ5, IRQ7
NS PC97338VJG
1
Yes
9-pin D-type connector, in male type
Rear side
Enable/disable by BIOS Setup
3F8h, 2F8h, 3E8h, 2E8h, Disabled
IRQ4, IRQ11
Refresh Rate
60
60
60
60
60
60
Specification
Specification
System Introduction