Atari ST series - Page 250

Cauxin
Wait for RS-232 Character
Cauxin() Opcode = 3 ($03)
T his fu nctio n w a its u ntil a ch a ra cte r is ava ilable fro m th e R S -232 se rial d e 
v ice, a n d re tu rn s its A SC II v alu e. It d o es n o t e ch o th e c h ara cte r to th e
sc re en .
C macro format
c h a r ch ;
ch = C a u x in ( );
Machine language format
m o v e.w # 3 , - (sp )
trap # 1
a d d q .l # 2 ,s p
Inputs
N o n e
Results
DO ch w o rd T h e lo w e r eig h t bits co n tain th e A S CII ch a ra cter re 
ceiv ed .
See also
C a u x is (), C c o n i n ()
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