How to write a program in C language under DOS to control PCI reading and writing? I hope all experts can give a reference program, thank you!
China DOS Union
Union site: www.cn-dos.net Forum site: www.cn-dos.net/forum
DOS stands for freedom, openness and progress. Let us work hard, learn from the openness and GNU spirit of FreeDOS and Linux, and together build and grow a free GNU GPL world!
中国DOS联盟论坛 » DOS开发编程 & 发展交流 （开发室） » How to write a program in C language under DOS to control PCI read and write?
View 1,552 Replies 2
Original Poster
Posted 2006-10-13 01:49 · 中国 辽宁 大连 中移铁通
Floor 2
Posted 2006-11-09 02:36 · 中国 浙江 杭州 华数宽带
All are operated through address mapping. The original ISA bus all operate in an address-data manner. PCI is similar, mapping the base address of the PCI device to the 1M memory range (the memory area accessible by the C compiler). By reading and writing the base address and its offset, the internal resources of the PCI device can be accessed.
Recent Ratings for This Post
（ 1 in total）
Click for details
| Rater | Score | Time |
|---|---|---|
| redtek | +2 | 2006-11-09 02:39 |
Floor 3
Posted 2006-11-09 22:11 · 中国 河北 石家庄 电信
PCI BIOS can be used. The interrupt number of PCI BIOS is 1Ah, where AH is B1 and AL is the function number. Its function list is:
01h: INSTALLATION CHECK
02h: FIND PCI DEVICE
03h: FIND PCI CLASS CODE
06h: PCI BUS-SPECIFIC OPERATIONS
08h: READ CONFIGURATION BYTE
09h: READ CONFIGURATION WORD
0Ah: READ CONFIGURATION DWORD
0Bh: WRITE CONFIGURATION BYTE
0Ch: WRITE CONFIGURATION WORD
0Dh: WRITE CONFIGURATION DWORD
0Eh: GET IRQ ROUTING INFORMATION
0Fh: SET PCI IRQ
81h: INSTALLATION CHECK (32-bit)
82h: FIND PCI DEVICE (32-bit)
83h: FIND PCI CLASS CODE (32-bit)
86h: PCI BUS-SPECIFIC OPERATIONS (32-bit)
88h: READ CONFIGURATION BYTE (32-bit)
89h: READ CONFIGURATION WORD (32-bit)
8Ah: READ CONFIGURATION DWORD (32-bit)
8Bh: WRITE CONFIGURATION BYTE (32-bit)
8Ch: WRITE CONFIGURATION WORD (32-bit)
8Dh: WRITE CONFIGURATION DWORD (32-bit)
8Eh: GET IRQ ROUTING INFORMATION (32-bit)
8Fh: SET PCI IRQ (32-bit)
In addition, it can also be implemented by accessing ports CF8h and CFCh
01h: INSTALLATION CHECK
02h: FIND PCI DEVICE
03h: FIND PCI CLASS CODE
06h: PCI BUS-SPECIFIC OPERATIONS
08h: READ CONFIGURATION BYTE
09h: READ CONFIGURATION WORD
0Ah: READ CONFIGURATION DWORD
0Bh: WRITE CONFIGURATION BYTE
0Ch: WRITE CONFIGURATION WORD
0Dh: WRITE CONFIGURATION DWORD
0Eh: GET IRQ ROUTING INFORMATION
0Fh: SET PCI IRQ
81h: INSTALLATION CHECK (32-bit)
82h: FIND PCI DEVICE (32-bit)
83h: FIND PCI CLASS CODE (32-bit)
86h: PCI BUS-SPECIFIC OPERATIONS (32-bit)
88h: READ CONFIGURATION BYTE (32-bit)
89h: READ CONFIGURATION WORD (32-bit)
8Ah: READ CONFIGURATION DWORD (32-bit)
8Bh: WRITE CONFIGURATION BYTE (32-bit)
8Ch: WRITE CONFIGURATION WORD (32-bit)
8Dh: WRITE CONFIGURATION DWORD (32-bit)
8Eh: GET IRQ ROUTING INFORMATION (32-bit)
8Fh: SET PCI IRQ (32-bit)
In addition, it can also be implemented by accessing ports CF8h and CFCh
Forum Jump: