8051 interrupt | Microcontroller › 8051 › 8051 interrupt This topic has 1 reply, 2 voices, and was last updated 8 years, 8 months ago by Ashutosh Bhatt. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts December 24, 2015 at 7:42 am #4170 SOUMYAK CHANDRAParticipant hello everyone org 0000hljmp mainorg 001bhdjnz r0,startcpl p1.2mov r0,#14mov tl1,#00hmov th1,#00hstart:retiorg 0030hmain:mov tmod,#10hmov ie,#88hmov r0,#14mov tl1,#00hmov th1,#00hsetb tr1here:sjmp hereendIn this program whenever "reti" instruction executed after "djnz r0,start", it jumps to "here" subroutine then how timer 1 is auto reloaded although timer is used in mode 1 . . can you help me. . please unsure emoticon December 26, 2015 at 7:09 pm #13600 Ashutosh BhattParticipant timer rolls over from FFFFh to 0000h and again start counting. no need of auto reload this is default Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In