Addr. |
First Quad |
Second Quad |
Third Quad |
Fourth Quad |
000-00Fh |
DMA controller, channels 0 to 3 | |||
010-01Fh |
(System use) | |||
020-02Fh |
Interrupt controller #1 (020-021h) |
(System use) | ||
030-03Fh |
(System use) | |||
040-04Fh |
System timers |
(System use) | ||
050-05Fh |
(System use) | |||
060-06Fh |
Keyboard & PS/2 mouse (060h), Speaker (061h) |
Keyboard & PS/2 mouse (064h) |
| |
070-07Fh |
RTC/CMOS, NMI (070-071h) |
(System use) | ||
080-08Fh |
DMA page register 0-2 (081-083h) |
DMA page register 3 (087h) |
DMA page registers 4-6 (089-08Bh) |
DMA page register 7 (08Fh) |
090-09Fh |
(System use) | |||
0A0-0Afh |
Interrupt controller #2 (0A0-0A1h) |
(System use) | ||
0B0-0BFh |
(System use) | |||
0C0-0CFh |
DMA controller, channels 4-7 (0C0-0DFh, bytes 1-16) | |||
0D0-0DFh |
DMA controller, channels 4-7 (0C0-0DFh, bytes 17-32) | |||
0E0-0Efh |
(System use) | |||
0F0-0FFh |
Floating point unit (FPU/NPU/Math coprocessor) | |||
100-10Fh |
(System use) | |||
110-11Fh |
(System use) | |||
120-12Fh |
(System use) | |||
130-13Fh |
SCSI host adapter, (130-14Fh, bytes 1 to 16) | |||
140-14Fh |
SCSI host adapter, (130-14Fh, bytes 17 to 32) | |||
SCSI host adapter, (140-15Fh, bytes 1 to 16) | ||||
150-15Fh |
SCSI host adapter, (140-15Fh, bytes 17 to 32) | |||
160-16Fh |
Quaternary IDE controller, master drive | |||
170-17Fh |
Secondary IDE controller, master drive | |||
180-18Fh | ||||
190-19Fh | ||||
1A0-1AFh | ||||
1B0-1BFh | ||||
1C0-1CFh | ||||
1D0-1DFh | ||||
1E0-1EFh |
Tertiary IDE controller, master drive | |||
1F0-1FFh |
Primary IDE controller, master drive | |||
200-20Fh |
Joystick port |
(System use, 20C-20Dh) | ||
210-21Fh | ||||
220-22Fh |
Sound card | |||
SCSI host adapter, (220-23Fh, bytes 1 to 16) | ||||
230-23Fh |
SCSI host adapter, (220-23Fh, bytes 17 to 32) | |||
240-24Fh |
Sound card | |||
Non-NE2000 network card |
| |||
NE2000 network card (240-25Fh, bytes 1 to 16) | ||||
250-25Fh |
NE2000 network card (240-25Fh, bytes 17 to 32) | |||
260-26Fh |
Sound card | |||
Non-NE2000 network card |
| |||
NE2000 network card (260-27Fh, bytes 1 to 16) | ||||
270-27Fh |
(System use) |
Plug and Play system devices |
LPT2 (second parallel port) (color systems) | |
|
LPT3 (third parallel port) (monochrome systems) | |||
NE2000 network card (260-27Fh, bytes 17 to 32) | ||||
280-28Fh |
Sound card | |||
Non-NE2000 network card |
| |||
NE2000 network card (280-29Fh, bytes 1 to 16) | ||||
290-29Fh |
NE2000 network card (280-29Fh, bytes 17 to 32) | |||
2A0-2Afh vvv |
Non-NE2000 network card |
| ||
NE2000 network card (2A0-2BFh, bytes 1 to 16) | ||||
2B0-2BFh |
NE2000 network card (2A0-2BFh, bytes 17 to 32) | |||
2C0-2CFh | ||||
2D0-2DFh | ||||
2E0-2Efh |
COM4 (fourth serial port) | |||
2F0-2FFh |
COM2 (second serial port) | |||
300-30Fh |
Sound card (MIDI port) (300-301h) | |||
Non-NE2000 network card |
| |||
NE2000 network card (300-31Fh, bytes 1 to 16) | ||||
310-31Fh |
NE2000 network card (300-31Fh, bytes 17 to 32) | |||
320-32Fh |
Non-NE2000 network card | |||
NE2000 network card (320-33Fh, bytes 1 to 16) | ||||
Hard disk controller on old PC/XT | ||||
330-33Fh |
Sound card (MIDI port) (330-331h) | |||
NE2000 network card (320-33Fh, bytes 17 to 32) | ||||
SCSI host adapter, (330-34Fh, bytes 1 to 16) | ||||
340-34Fh |
SCSI host adapter, (330-34Fh, bytes 17 to 32) | |||
SCSI host adapter, (340-35Fh, bytes 1 to 16) | ||||
Non-NE2000 network card |
| |||
NE2000 network card (340-35Fh, bytes 1 to 16) | ||||
350-35Fh |
SCSI host adapter, (340-35Fh, bytes 17 to 32) | |||
NE2000 network card (340-35Fh, bytes 17 to 32) | ||||
360-36Fh |
Tape accelerator card (360h) |
Quaternary IDE controller (slave drive) (36E-36Fh) | ||
Non-NE2000 network card |
| |||
NE2000 network card (360-37Fh, bytes 1 to 16) | ||||
370-37Fh |
Tape accelerator card (370h) |
Secondary IDE controller (slave drive) (376-377h) |
LPT1 (first parallel port) (color systems) | |
|
LPT2 (second parallel port) (monochrome systems) | |||
NE2000 network card (360-37Fh, bytes 17 to 32) | ||||
380-38Fh |
Sound card (FM synthesizer) | |||
390-39Fh | ||||
3A0-3AFh | ||||
3B0-3BFh |
VGA/Monochrome Video |
LPT1 (first parallel port) (monochrome systems) | ||
3C0-3CFh |
VGA/EGA Video | |||
3D0-3DFh |
VGA/CGA Video | |||
3E0-3EFh |
Tape accelerator card (3E0h) |
COM3 (third serial port) | ||
|
Tertiary IDE controller (slave drive) (3EE-3EFh) | |||
3F0-3FFh |
Floppy disk controller |
COM1 (first serial port) | ||
Tape accelerator card (3F0h) |
Primary IDE controller (slave drive) (3F6-3F7h) |
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