'Bios data area' diaporamas de présentation

40:17H

#include <dos.h> void interrupt(*old)(); void interrupt newint9(); void main() { old = getvect(0x09); setvect(0x09,newint9); keep(0,1000); } void interrupt newint9() { if (inportb(0x60)==0x1F) { outportb(0x20,0x20); return; } (*old)(); }.

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Viewing 8086 memory-areas

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Physics 413 Chapter 10

Physics 413 Chapter 10. IBM PC Interfacing. The parallel port is a 25-pin DB-25 (D-shaped) connector accessible from the back of the PC The expansion slot provides access to the address bus, data bus, several IRQ lines, clock signal, and several control lines.

160 views • 8 slides

COSC 456 Lesson 19: Laboratory 5

COSC 456 Lesson 19: Laboratory 5. IBM PC Interfacing. The parallel port is a 25-pin DB-25 (D-shaped) connector accessible from the back of the PC The expansion slot provides access to the address bus, data bus, several IRQ lines, clock signal, and several control lines.

187 views • 8 slides