#msg Transmits counter!
opo P_channel, 1   ; Set to channel 1.
xor     ax, ax     ; Set AX = 0
:1
delay   10         ; We want to delay between each transmit, and we put
                   ; it at the beginning of the loop to give the receiver
                   ; time to prepare at the beginning of the simulation.

inc     ax         ; AX = AX + 1
err     ax         ; Display what we're about to transmit.
int     I_transmit ; transmit AX over the radio.
jmp     1          ; and start over.