Category : Tutorials + Patches
Archive   : TXTFILES.ZIP
Filename : IO_ADDR.TXT

I/O ADDRESSES
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Hex Range Device
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000-91F DMA Controller 1, 8237A-5
020-03F Interrupt Controller 1, 8259A, Master
040-05F Timer, 8254-2
060 8042 (Keyboard)
061 System Board I/O port
064 8042 (Keyboard)
070-07F Real-Time Clock, NMI (Non-maskable Interrupt) Mask
080-09F DMA Page Register , 74LS612
0A0-0BF Interrupt Controller 2, 8237A-5
0F0 Clear Math Coprocessor Busy
0F1 Reset Math Coprocessor
0F8-0FF Math Coprocessor
1F0-1F8 Fixed Disk
20C-20D Reserved
21F Voice Communications Adapter
278-27F Parallel Printer Port 2
2B0-2DF Alternate Enhanced Graphics Adapter
2E1 GPIB (Adapter 0)
2E2 & 2E3 Data Acquisition (Adapter 0)
2F8-2FF Serial Port 2
300-31F Prototype Adapter
360-363 PC Network (low address)
364-367 Reserved
368-36B PC Network (high address)
36C-36F Reserved
378-37F Parallel Printer Port 1
380-38F SDLC, Bisynchronous 2
3A0-3AF Bisynchronous 1
3B0-3BF Monochrome Display and Printer Adapter
3C0-3CF Enhanced Graphics Adapter
3D0-3DF Color/Graphics Monitor Adapter
3F0-3F7 Diskette Controller
3F8-3FF Serial Port 1
6E2 & 6E3 Data Acquisition (Adapter 1)
AE2 & AE3 Data Acquisition (Adapter 2)
EE2 & EE3 Data Acquisition (Adapter 3)
22E1 GPIB (Adapter 1)
42E1 GPIB (Adapter 2)
62E1 GPIB (Adapter 3)
82E1 GPIB (Adapter 4)
A2E1 GPIB (Adapter 5)
C2E1 GPIB (Adapter 6)
E2E1 GPIB (Adapter 7)

NOTE:
I/O Addresses, hex 000 to 0FF, are reserved for the system
board I/O. Hex 100 to 3FF are available on the I/O
channel. The system board decodes up to 10 bits of I/O
address information. I/O addresses above 3FF must not
conflict with the system board I/O addresses.