I/O Map - Intel cc820 Product Manual

Intel Desktop Board CC820 Product Guide

I/O Map

Table 26. I/O Map
Address (hex)
0000 - 000F
0020 - 0021
0040 - 0043
0060
0061
0064
0070 - 0071
0072 - 0073
0080 - 008F
0092
00A0 - 00A1
00B2 - 00B3
00C0 - 00DF
00F0
0170 - 0177
01F0 - 01F7
One of these ranges:
0200 - 0207
0208 - 020F
0210 - 0217
0218 - 021F
One of these ranges:
0220 - 022F
0240 - 024F
0228 - 022F*
0278 - 027F*
02E8 - 02EF*
02F8 - 02FF*
One of these ranges:
0320 - 0327
0330 - 0337
0340 - 0347
0350 - 0357
0376
0377, bits 6:0
0378 - 037F
0388- 038B
03B0 - 03BB
03C0 - 03DF
03E8 - 03EF
62
Size Description
16 bytes DMA controller
2 bytes Programmable Interrupt Control (PIC)
4 bytes System timer
1 byte Keyboard controller byte—reset IRQ
1 byte System speaker
1 byte Keyboard controller, CMD / STAT byte
2 bytes System CMOS / Real Time Clock
2 bytes System CMOS
16 bytes DMA controller
1 byte Fast A20 and PIC
2 bytes PIC
2 bytes APM control
32 bytes DMA
1 byte Numeric data processor
8 bytes Secondary IDE channel
8 bytes Primary IDE channel
Can vary from 1 byte Audio / game port
to 8 bytes
Audio (Sound Blaster Pro
16 bytes
16 bytes
8 bytes LPT3
8 bytes LPT2
8 bytes COM4 / video (8514A)
8 bytes COM2
8 bytes MPU-401 (MIDI)
1 byte Secondary IDE channel command port
7 bits Secondary IDE channel status port
8 bytes LPT1
6 bytes AdLib
12 bytes Intel 82820 - Memory Controller Hub (MCH)
32 bytes Intel 82820 - Memory Controller Hub (MCH)
8 bytes COM3
†
-compatible)
†
(FM synthesizer)
continued