My system controlled by the 80c31 scan the settings of various alarm sensors. when a sensor is being detected, 8 bit data transfred to the ACC and send to another unit - an alarm unit.

The BIM2 is a miniature tranciever, UHF radio modules with capability of data transmission up to 64 Kbps. (433.92 Mhz)
(the site i mentioned contained additional data in PDF's)

What do U mean to send a header ?
is it a 1 or 2 FFh bytes, a start message, than data and at the last the CRC or check sum ?

Does it the right sequence ?

Can i have your advise how to write it (in ASM) that the 80c31 will understand it as a valid data.

Thanks 4 your help