After serial interrupt: "mov 20h,sbuf", I need to receive new data from the serial port. Can I read the new data from the SBUF before I RETI?
;-------------------------------------
org 0023h
jmp serial
...
...
serial: mov 20h,sbuf
jnb 20h.0,there
reti

there: mov 20h,sbuf
;--------------------------------------
;Could I get the new sbuf value above?
;--------------------------------------
jnb 20h.0,there
jmp here
reti

here: .......
reti
;--------------------------------------
Hold after 20h.0 change to "1". The sensor flag 20h.0 change to "1" and send to the S52 by serial port.

Stanley