Hi, I'm still new to the 8051 and program in assembler.
I want to use the 89C4051 in my project, but how can I time the 1ms.
I thoughed useing something like this loop:

wait: mov r1,000h
mov r2,000h
lus: djnz r1,lus
djnz r2,lus
ret

or is there a better way