Atari ST series - Page 255

Cnecin
Keyboard Input Without Echo
Cnecin() Opcode = 8 ($08)
T his fu n ction w a its u ntil a c h ara cte r is availab le from th e co n sole k e y
b oa rd , d o es n o t ec h o th e c h a rac te r to th e sc re e n , an d retu rn s its A SC II
v alu e an d sca n co d e. T his fu n ction is id en tica l to C ra w c in (), th ou g h th e
d o cu m e n ta tio n sta tes th a t it d iffe rs fro m th at fu nctio n in th at C n e c in ( ) a cts
o n co n tro l co d es like C on tro l-S , C o n tro l-Q , a n d C o n tro l-C , in ste ad o f p as s
in g th e se c o d es o n , like C ra w c in (). A t lea st in cu rre n t T O S v ersio n s, h o w 
e v er, C n e c in () p as se s th ese co d e s o n a lso .
C macro format
lo n g k ey co d e;
k ey co de = C n e c in ( );
Machine language format
m o v e .w # 8 , - ( s p )
trap # 1
ad d q .l # 2 ,s p
Inputs
N o n e
Results
DO k ey co d e lo n g A lo n gw ord th at co n ta in s bo th th e A SC II v alu e of
th e k ey (s) p re sse d , an d th e sca n co d e . T h e A SC II
v alu e is re tu rn ed in th e lo w by te of th e low w o rd
o f keycode, w h ile th e scan co d e is re tu rn e d in th e
lo w b y te o f th e h ig h w o rd . S ee A p p en d ix J fo r a
co m p lete list o f k ey co d es.
See also
C c o n i n (), C r a w c in (), C ra w c io ()
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