AP440FX Motherboard Technical Product Specification
42
2.2 I/O Map
Table 29.
I/O Map
Address
(hex)
Size
Description
Address
(hex)
Size
Description
0000 - 000F
16 bytes
PIIX3 - DMA 1
0376
1 byte
Sec IDE Chan Cmd Port
0020 - 0021
2 bytes
PIIX3 - Interrupt Controller 1 0377
1 byte
Sec IDE Chan Stat Port
002E - 002F
2 bytes
87307 Base Configuration
0378 - 037F
8 bytes
Parallel Port 1
0040 - 0043
4 bytes
PIIX3 - Timer 1
0388 - 038B
4 bytes
CS4236 Audio
0060
1 byte
Keyboard Controller Byte -
Reset IRQ
03B0 - 03BB
12 bytes S3 Virge or Virge/DX
0061
1 byte
PIIX3 - NMI, speaker control 03BC - 03BF 4 bytes
Parallel Port 3
0064
1 byte
Kbd Controller, CMD/STAT
Byte
03C0 - 03DF
32 bytes S3 Virge or Virge/DX
0070, bit 7
1 bit
PIIX3 - Enable NMI
03E8 - 03EF
8 bytes
Serial Port 3
0070, bits 6:0 7 bits
PIIX3 - Real Time Clock,
Address
03F0 - 03F5
6 bytes
Floppy Channel 1
0071
1 byte
PIIX3 - Real Time Clock,
Data
03F6
1 byte
Pri IDE Chan Cmd Port
0078
1 byte
Reserved - Brd. Config.
03F7 (Write)
1 byte
Floppy Chan 1 Cmd
0079
1 byte
Reserved - Brd. Config.
03F7, bit 7
1 bit
Floppy Disk Chg Chan 1
0080 - 008F
16 bytes
PIIX3 - DMA Page Register
03F7, bits
6:0
7 bits
Pri IDE Chan Status Port
00A0 - 00A1
2 bytes
PIIX3 - Interrupt Controller 2 03F8 - 03FF
8 bytes
Onboard Serial Port 1
00C0 - 00DE
31 bytes
PIIX3 - DMA 2
04D0 - 04D1
2 bytes
Edge/level triggered
00F0-00FF
16 bytes
Math Coprocessor
Compatible I/O Registers
LPT + 400h
8 bytes
ECP port, LPT + 400h
0170 - 0177
8 bytes
Secondary IDE Channel
0608 - 060B* 4 bytes
CS4236 Audio
01F0 - 01F7
8 bytes
Primary IDE Channel
0CF8**
1 byte
PCI Config Address Reg.
0200 - 0207
8 bytes
Game Port
0CF9
1 byte
Turbo & Reset control
Reg.
0228 - 022F
8 bytes
Parallel Port 3, ECP/EPP
Mode
0CFC-0CFF
4 bytes
PCI Config Data Reg
290 - 0297
8 bytes
Management Extension
Hardware
0FE0-0FE7
8 bytes
CS4236 Audio
0240-024F
16 bytes
CS4236 Audio
FF00 - FF07
8 bytes
IDE Bus Master Reg.
0278 - 027B
4 bytes
Parallel Port 2
FF80 - FF9F
32 bytes PCI Universal Serial Bus
02E8-02EF
8 bytes
Serial Port 4
FFA0 - FFA7 8 bytes
IDE primary Channel
02F8 - 02FF
8 bytes
Onboard Serial Port 2
FFA8 - FFAF 8 bytes
IDE secondary channel
0330 - 0331
2 bytes
MPU-401 (MIDI)
* This is only part of one of the Windows Sound System (WSS) selectable ranges. The defined ranges are 0530-0537, 0604-
060B, 0E80-0E87, or 0F40-0F47. Only one of these ranges needs to be used for WSS to work.
** Only by DWORD accesses.
Содержание AP440FX
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