I/O Address Map - TRIGEM CW3S20A Operation Manual

I/O Address Map

Hex range
000-01 F
020-03F
040-05F
060-06F
070-07F
080-09F
0A0-0BF
0C0-0DF
0F0
0F1
OF&OFF
378-37F
3F0-3F7
3F8-3FF
Note: l/O address, hex 000 to FFF are reserved for the system board
Hex 100 to 3FF are available on the l/O channel.
Device
8237A-5 DMA Controller #1
8259A Interrupt Controller #1
8254-2 Timer
8042 Keyboard Controller
Real Time Clock NMI (Non-Maskable Interrupt) Mask
74LS612 DMA Page Register
8259A Interrupt Controller #2
8237A-5 DMA Controller #2
Clear Math Coprocessor Busy
Reset Math Coprocessor
Math Coprocessor
Parallel Printer Port on Board
Floppy Disk Drive Control on Board
Serial Port on Board
110.
Specifications A-5