timer mode have four: 0,1,2,3. m1 m0=00 is timerX mode 0; m1 m0=01 is timerX mode 1; m1 m0=10 is timerX mode 2; m1 m0=11 is timerX mode 3. 8051's timer mode have four: 0,1,2,3. 发表时间:2003年2月25日11:38:00