IBM Aptiva Hardware Maintenance Guide

General Information 1-13
DMA Channel Assignments
This table shows the channel assignments for direct memory access (DMA).
DMA allows I/O devices to transfer data directly to and from memory. You may
need to select an open DMA channel if you add an I/O device that uses DMA.
Table 1- 5 DMA Channel Assignments Table
DMA channel Assignment
0 Available to user
1 Audio
2 Diskette drive
3 Audio/ECP
4 Cascade
5 Available to user
6 Available to user
7 Available to user
Serial Port Addresses
The built-in serial port supports these addresses and interrupts.
Table 1- 6 Serial Port Addresses Table
Address Windows 95 Interrupt Default
3F8 COM1 IRQ 4 Modem
2F8 COM2 IRQ 3 Serial port
3E8 COM3 IRQ 4
2E8 COM4 IRQ 3

IBM Aptiva Specifications

General

Brand	IBM
Model	Aptiva
Category	Desktop
Language	English