4. CPU Card Resources
36
SPI-8150-LVA, SPI-8151-LVA
4.3 I/O Map
I/O Map
Address (h)
Size
Description
0000 - 001F
32 bytes
DMA Controller
0020 - 002D
14 bytes
Interrupt Control (PIC)
002E - 002F
2 bytes
Super I/O controller configuration registers
0030 - 003D
14 bytes
Interrupt Control (PIC)
0040 - 0043
4 bytes
System timer 1
0048 - 004B
4 bytes
System timer 2
004E - 004F
2 bytes
Super I/O controller configuration registers
0050 - 0053
4 bytes
Timer/Counter
0060,0062,
0064,0066
4 byte
Keyboard Controller
0061,0063,
0065,0067
4 byte
NMI, speaker control
0064
1 byte
Keyboard controller
0070 - 0077
8 bytes
Real Time Clock Controller
0080 - 009F
32 bytes
DMA page registers
00A0 - 00AD
14 bytes
Interrupt controller 2
00B0 - 00B1
2 bytes
Interrupt controller
00B2 - 00B3
2 bytes
APM control
00B4 - 00BD
10 bytes
Interrupt controller
00C0 - 00DF
32 bytes
DMA controller 2
00F0 - 00FF
16 bytes
Numeric processor
0170 - 0177
8 bytes
Secondary IDE controller
01F0 - 01F7
8 bytes
Primary IDE controller
0274 - 0277
4 bytes
I/O read data port for ISA PnP enumerator
0278 - 027F
8 bytes
LPT2
0295 - 0296
2 bytes
LPC
02E8 - 02EF
8 bytes
COM4
02F8 - 02FF
8 bytes
COM2
0370 - 0377
8 bytes
Secondary IDE channel
0378 - 037F
8 bytes
LPT1
0388 - 038D
6 bytes
Reserved
03B0 - 03BB
12 bytes
Reserved
03BC - 03BF
8 bytes
LPT3
03C0 - 03DF
32 bytes
Video (VGA)
03E8 - 03EF
8 bytes
COM3
03F0 - 03F5, 03F7
8 bytes
FDD controller
03F6
1 byte
Primary IDE channel
03F8 - 03FF
8 bytes
COM1
04D0 - 04D1
2 bytes
Reserved
LPT n + 400h
8 bytes
ECP port, LPT n base a 400h
0CF8 - 0CFF *1
4 bytes
PCI configuration address register
0CF9 *2
1 byte
Reset control register
*1: Dword access only, *2: Byte access only
Recommendation: x300 - x31F, x700 - x71F, xB00 - xB1F, xF00 - xF1F (x: 0- F)
