88
Reference Data
System I/O addresses
The following table shows the location in I/O space of all directly
I/O-accessible registers.
Address (hex)
Size
Resource
0000 - 000F
16 bytes
DMA controller
0020 - 0021
2 bytes
Programmable Interrupt Control (PIC)
0040 - 0043
4 bytes
System timer
0060
1 byte
Keyboard controller byte-reset IRQ
0061
1 byte
System speaker
0064
1 byte
Keyboard controller, CMD / STAT byte
0070 - 0071
2 bytes
System CMOS / Real Time Clock (RTC)
0072 - 0073
2 bytes
System CMOS
0080 - 008F
16 bytes
DMA controller
0092
1 byte
Fast A20 and PIC
00A0 - 00A1
2 bytes
PIC
00B2 - 00B3
2 bytes
Reserved
00C0 - 00DF
32 bytes
DMA
00F0
1 byte
Numeric data processor
0170 - 0177
8 bytes
Secondary IDE channel
01F0 - 01F7
8 bytes
Primary IDE channel
0228 - 022F*
8 bytes
LPT3
0278 - 027F*
8 bytes
LPT2
02E8 - 02EF*
8 bytes
COM4 / video (8514A)
02F8 - 02FF*
8 bytes
COM2
0376
1 byte
Secondary IDE channel command port
0377, bits 6:0
7 bits
Secondary IDE channel status port
0378 - 037F
8 bytes
LPT1
03B0 - 03BB
12 bytes
Intel 82810e—DC100 graphics/memory
controller hub (GMCH)
03C0 - 03DF
32 bytes
Intel 82810e—graphics/memory controller
hub (GMCH)
03E8 - 03EF
8 bytes
COM3
* Default
** Double-word (Dword) access only
*** Byte access only
8506999.book Page 88 Friday, December 15, 2000 8:22 AM
Summary of Contents for E-1600
Page 6: ...iv 8506999 book Page iv Friday December 15 2000 8 22 AM...
Page 16: ...8 System Features 8506999 book Page 8 Friday December 15 2000 8 22 AM...
Page 22: ...14 System Setup 8506999 book Page 14 Friday December 15 2000 8 22 AM...
Page 28: ...20 Case Access 8506999 book Page 20 Friday December 15 2000 8 22 AM...
Page 92: ...84 Safety and Regulatory Information 8506999 book Page 84 Friday December 15 2000 8 22 AM...
Page 100: ...92 Reference Data 8506999 book Page 92 Friday December 15 2000 8 22 AM...