Hi can someone please help with the explanation of this code below, more importantly how does the uC 'see' the Sqrs: line at the end of the code
I am interested in something similar in a project i am currently doing whereby the input data of a PORT is compared to certain values and the the result stored in a register.
What function does PC have in the code?
org 0 ljmp Main
Main:
mov P3, #0xFF ; Port 3 is an input
loop: mov a, P3
anl a, #0x0F ; Clear bits 7..4 of A
lcall sqrt
mov P1, a
sjmp loop
sqrt: inc a
movc a, @a + PC
ret
Sqrs: db 0,1,1,1,2,2,2,2,2,3,3,3,3,3,3,3