Dear Gurus,

I have following two delay loops in an application using 2051. Application is working OK. The requirement is that I have to change crystal.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Loop - 1

MOV R4,#6H
VALID_INNERL
MOV R3,#5BH
WAITVL DJNZ R3,WAITVL
JB P3.7,HOLDHD
DJNZ R4,VALID_INNERL

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Loop - 2

MOV R4,#07H
TEST_LOOPD_INNER
MOV R3,#5BH
WAITT DJNZ R3,WAITT
DJNZ R4,TEST_LOOPD_INNER

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Kindly let me know :

1) How long these both loops do now take using 11.0592 MHz crystal ?

2) The values for TL0 and TH0 for the equivalent delay loops using timer-0 but using a 20 MHz crystal ?

Thank you

Babar/