Input/Output (I/O) Addresses - Intergraph TD-20 Setup Manual

Input/Output (I/O) Addresses

The following tables list a subset of the reserved I/O addresses.
TD-20
Address (hex)
0000 - 000F
0020 - 0021
0040 - 0043
0060 - 0060
0061 - 0061
0064 - 0064
0070 - 0071
0081 - 008F
00A0 - 00A1
00C0 - 00DF
00F0 - 00FF
01F0 - 01F7
0200 - 0207
0220 - 022F
0274 - 0277
02F8 - 02FF
0330 - 0331
0378 - 037F
0388 - 038B
03B0 - 03BB
03C0 - 03DF
03F0 - 03F5
03F6 - 03F6
03F7 - 03F7
03F8 - 03FF
04D0 - 04D1
0778 - 077A
0CF8 - 0CFB
F4F0 - F4F7
Description
DMA controller
Interrupt controller
System timer
Keyboard
System speaker
Keyboard
System CMOS/real-time clock
DMA controller
Interrupt controller
DMA controller
Math coprocessor
Primary / PCI IDE controller
MIDI / game port
Audio
I/O read data port for ISA Plug and
Play enumerator
Serial port COM2
Audio
Parallel port LPT1
Audio
PCI Video (VGA)
PCI Video (VGA)
Floppy disk controller
Primary / PCI IDE controller
Floppy disk controller
Serial port COM1
System board resources
Parallel port (LPT1)
PCI bus
Primary / PCI IDE controller
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