Atari ST series - Page 287

Fforce
Replace Standard File Handle
Fforce() Opcode = 70 ($46)
P erm its y o u to red ire ct I/O from a sta n d ard d ev ice h an d le to a u se r-d es ig 
n ated o n e.
C macro format
w o rd sta tu s, s ta n d a rd , u ser;
sta tu s = F fo rce (s ta n d a rd , u ser);
Machine language format
m o v e.w
m o v e.w
m o v e.w
trap
a d d q .l
Inputs
u ser
sta n d a rd
Results
DO statu s
See also
F d u p ( )
u se r, - (sp )
sta n d ard , - (sp )
# $ 4 6 , - ( s p )
#1
# 6 ,s p
w o rd T h e h an d le o f th e u ser-d es ig n ated file
th a t re p lac es th e sta n d ard file,
w o rd T h e h an d le o f th e sta n d ard file to be re
p laced .
w o rd A 0 in dicate s s u cce ss, o th erw ise a n eg ativ e G E M 
D O S e rro r n u m b er is retu rn ed .
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