Atari ST series - Page 254

Crawcin
Raw Keyboard Input Without Echo
Crawcin() Opcode = 7 ($07)
T his fu n ctio n w a its u ntil a c h ara cte r is availab le fro m th e co n sole k ey 
b oa rd , an d retu rn s its A S CII v alu e an d sca n co d e . U nlik e C c o n i n (), it d oes
n o t ec h o th e ch a ra cte r to th e scre e n .
C macro format
lo n g k ey co de ;
k ey co d e = C r a w c in ( );
Machine language format
m o v e .w # 7 , - (sp )
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 g w o rd th at co n tain s b o 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 SCII
v alu e is re tu rn e d in th e low b yte of th e low w o rd
of k ey co d e, w h ile th e scan co d e is retu rn ed in th e
lo w by te of th e h ig h w o rd . S ee A p p e n d ix J for a
co m p lete list o f k ey co d es .
See also
C c o n i n (), C n e c in ( ), C r a w c io ()
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