Global American 3308180, User Manual

Page: 31 / 33

Appendix
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Each peripheral device in the system is assigned a set of I/O port addresses
which also becomes the identity of the device.
The following table lists the I/O port addresses used.
3
.1 I/O Port Address Map
Address Device Description
000h - 0Fh DMA Controller #
020h - 03Fh Interrupt Controller #
040h - 0Fh Timer
060h - 06Fh Keyboard Controller
070h - 07Fh Real Time Clock, NMI
080h - 09Fh DMA Page Register
0A0h - 0BFh Interrupt Controller #2
0C0h - 0DFh DMA Controller #2
0F0h Clear Math Coprocessor Busy Signal
0Fh Reset Math Coprocessor
F0h - F7h IDE Interface
278h - 27Fh Parallel Port #2 (LPT2)
2F8h - 2FFh Serial Port #2 (COM2)
2B0h - 2DFh Graphics adapter Controller
378h - 3FFh Parallel Port # (LPT)
360h - 36Fh Network Ports
3B0h - 3BFh Monochrome & Printer adapter
3C0h - 3CFh EGA adapter
3D0h - 3DFh CGA adapter
3F0h - 3F7h Floppy Disk Controller
3F8h - 3FFh Serial Port # (COM)