有时候,汇编比高级语言更易懂
检查某一位是否为1,如果用高级语言就麻烦得多
function CheckBit(AByte:Byte; Pos: Byte): Boolean; Assembler;
//76543210
asm
MOV CL, DL; //Pos in DL
SHR AL, CL; //AByte in AL
AND AL, 1; //Result in AL
end;
检查某一位是否为1,如果用高级语言就麻烦得多
function CheckBit(AByte:Byte; Pos: Byte): Boolean; Assembler;
//76543210
asm
MOV CL, DL; //Pos in DL
SHR AL, CL; //AByte in AL
AND AL, 1; //Result in AL
end;