Atari ST series - Page 240

Vsync
Wait for Vertical Blank
Vsync() Opcode = 37
T h is fu n ctio n sim p ly w aits un til th e vertical blan k in te rru p t is finish ed , an d
re tu rn s. It can b e u se d to sy n ch ro n ize scre en d raw in g w ith th e v b la nk , o r
a s a sim p le d elay m e ch an is m .
C macro format
V sy n c( );
Machine language format
m o v e.w # 3 7 , - (sp)
trap # 1 4
a d d q .l # 2 ,s p
Inputs
N o n e
Results
N o n e
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