![background image](http://html.mh-extra.com/html/nec/express5800-120md-series/express5800-120md-series_user-manual_251192172.webp)
B-4
Interrupt Request/PCI IRQ Device/I/O Port Address Assignments
I/O Port Address Assignments
Table B-3 lists the I/O port address assignments. In Table B-3 the addresses are
listed in hexadecimal notation and the I/O port address of a PCI device is set
according to its type and number.
Table B-3. I/O Port Address Assignments
Address
Item
00
-
1F
8-bit DMA control registers
20
-
21
Master 8259 programming interface
2E
-
2F
Configuration
40
-
43
8254 programming interface
60
Keyboard/mouse
61
NMI status register
64
Keyboard/mouse
70
-
71
NMI enable register/real-time clock
80
-
8F
16-bit DMA control registers
A0
-
A1
Slave 8259 programming interface
C0
-
DF
DMA controller page registers
E0
-
E9
Base address register
F0
Reset IRQ 13
F1
-
FF
Logical device configuration
170 - 177 or BAR2
EDMA2 compatible mode primary command block registers
1F0 - 1F7 or BAR0
EDMA2 compatible mode secondary command block registers
278
-
27F
(Parallel port 3)
2F8
-
2FF
Serial port 2
376
or
BAR3
EDMA2 compatible mode secondary command block registers
370
-
377
(Floppy disk drive 2), IDE 2
378
-
37F
(Parallel port 2)
3B0
-
3BB
VGA
3BC
-
3BF
Parallel port 1
3C0
-
3DF
VGA
3F6
or
BAR1
EDMA2 compatible mode primary command block registers
3F0
-
3F7
(Floppy disk drive 1), IDE 1
3F8
-
3FF
Serial port 1
Summary of Contents for EXPRESS5800/120Md Series
Page 1: ... U s e r s G u i d e EXPRESS5800 120Md ...
Page 2: ...NEC ...
Page 3: ... U s e r s G u i d e EXPRESS5800 120Md ...
Page 58: ...2 16 Setting Up the System Figure 2 10 Connecting the AC Power Cord to the Server ...
Page 64: ...2 22 Setting Up the System ...
Page 92: ...3 28 Configuring Your System ...
Page 165: ...A Technical Specifications Server Unit ...
Page 168: ...A 4 Technical Specifications ...
Page 174: ...B 6 Interrupt Request PCI IRQ Device I O Port Address Assignments ...
Page 185: ...D ROMPilot BIOS Error Codes ROMPilot BIOS Error Codes ...
Page 188: ...D 4 ROMPilot BIOS Error Codes ...
Page 198: ...10 Glossary ...
Page 204: ...Index 4 ...
Page 205: ...xx ...
Page 206: ... 456 01557 N00 ...