how to hserin compare with known value?

[pedja089]

Try something like this

HSERIN [WAIT($07), str DATAIN\8]
if datain[0] = $07 and  datain[1] =$06 and  datain[2] =$0D  and  datain[3] =$CA  and  datain[4] =$2E  and  datain[5] =$56 and  datain[6] =$00 and  datain[7] =$C9  and  datain[8] =$77 then hserout [str datain\8]

or this

str[0]= $07:.....:str[7]=$77
 HSERIN [WAIT($07), str DATAIN\8]
for i = 0 to 8
IF str[i]<>datain[i] then goto DO_NOT_SEND
next i
hserout [str datain\8]
do_not_send: