| IRQS- Interrupt Request Line 0 0040-005F System Timer 1 0060-006F Keyboard controller 2 00A0-00AF Access to IRQ's 7 and above 3 02F8-02FF Com 2 3 02E8-02EE Com 4 4 03F8-03FF Com 1 4 03E8-03EF Com 3 5 0278-027F LPT 2 or Soundcard 6 03F0-03F7 Floppy 7 0378-037F LPT 1 8 0070-007F Real Time Clock 9 Available 10 Available 11 Available or SCSI 12 0238-023F PS/2 Mouse 13 00F8-00FF Math coprocessor 14 01F0-01F7 IDE Hard Drive 15 0170-017F Secondary IDE Hard Drive Available |
| DMA Channels 8 bit transfer data Faster 16 bit transfer data 0 1 2 3 4 5 6 7 DMA Channel 4 is not avialable for data transfer because it cascades down into the lower four DMA channels. HOME |
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