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 address + 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)
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