.include c:w923icecaid2.sfr
;:::::::::::::::::::::::::::::::::::::::::::::::::

org 00h
ljmp Start
org 03h
reti
org 13h
reti
org 1bh
reti
org 23h
reti
org 2bh
reti
org 3bh
reti
org 43h
reti
org 4bh
reti
org 53h
ljmp CidInterrupt
org 5bh
reti
org 63h
reti
org 6bh
reti

;--------------------------------------------------
org 90h

CidInterrupt:
push acc
push psw
call ChkCidInt
anl exif,#fbh
mov cidfg,#00h
pop psw
pop acc
reti

;--------------------------------------------------
Start:
mov sp,#c0h
mov a,#00h
call CidInit
clr ediv
clr diva
jmp Main

CidInit:
setb ea
mov cidfg,#00h
;mov cidpcr,#00h
mov cidpcr,#10h
mov exif,#00h
setb ecid
ret

Main:
nop
jmp Main

;---------------------------------------------------

ChkCidInt:

;vardef:
CasEnable equ 00010010b
FskEnable equ 00010100b

mov a,cidfg
jnb a.0,c1
ljmp CidRing
c1:
jnb a.1,c2
ljmp CidAlgo
c2:
jnb a.2,ChkCidIntEnd
ljmp CidFsk

CidRing:
nop
orl cidpcr,#CasEnable
ljmp ChkCidIntEnd
CidAlgo:
nop
orl cidpcr,#FskEnable
ljmp ChkCidIntEnd
CidFsk:
nop
ljmp ChkCidIntEnd

ChkCidIntEnd:
ret


;______________________________

i wrote this simple callerid routine.
to my understanding, if there is incoming ring(line reversal-BT specs)
the program should stop at ChkCidInt if i put a break there.

the problem is when i let it free run, the program won't stop at chkCidInt.
but when i stop the program and then run it again from where it left off.
the program only then would jmp to ChkCidInt even though the cid data sending is well over.

do you know what's wrong w/ my settings?