Acer 505 User Manual
Page 25
Chapter 1
19
Video Resolution Modes
Resolution
Refresh Rate
CRT Only
LCD/CRT Simultaneous
640x480x256
75
60
640x480x64K
75
60
640x480x16M
75
60
800x600x256
75
60
800X600X64K
75
60
800X600X16M
75
60
1024x768x256
75
60
1024x768x64K
75
60
1024x768x16M
75
60
Parallel Port
Item
Specification
Parallel port controller
ALI 5135B
Number of parallel port
1
Location
Rear side
Connector type
25-pin D-type connector, in female type
Parallel port function control
Enable/Disable by BIOS Setup
Supports ECP
Yes (set by BIOS setup)
Optional ECP DMA channel
(in BIOS Setup)
DMA channel 1
DMA channel 3
Optional parallel port I/O address
(in BIOS Setup)
3BCh, 378h, 278h
Optional parallel port IRQ
(in BIOS Setup)
IRQ7
Serial Port
Item
Specification
Serial port controller
ALI 5135B
Number of serial port
1
Supports 16550 UART
Yes
Connector type
9-pin D-type connector, in male type
Location Rear
side
Serial port function control
Enable/disable by BIOS Setup
Optional serial port
(in BIOS Setup)
3F8h, 2F8h, 3E8h, 2E8h,
Optional serial port IRQ
(in BIOS Setup)
IRQ4, IRQ3
505-1.book Page 19 Thursday, November 4, 1999 4:36 PM