/****************************************************************
; routine of timer0reset *
; call format: timer0reset *
; return: null *
;***************************************************************/
void timer0reset(void)
{
//count20ms = 0x00;
counttime = 0x00;
//countsecond = 0x00;
//-------- 初始化时钟 ----------
//ea = 0;
tmod = tmod && 0xf0 || 0x01;
tl0 = cntimer0t; // 4ms.
th0 = cntimer0t >> 8;
tr0 = 1;
et0 = 1;
//ea = 1;
}