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added randomize

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1494 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cpg 2002-11-06 22:21:15 +00:00
parent b98a3bd537
commit 82696446fc
2 changed files with 18 additions and 0 deletions
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1
libsrc/atari/Makefile
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@ -50,6 +50,7 @@ OBJS = _scrsize.o \
oserrlist.o \
oserror.o \
ostype.o \
randomize.o \
read.o \
readjoy.o \
remove.o \

17
libsrc/atari/randomize.s Normal file
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@ -0,0 +1,17 @@
;
; Christian Groessler, 06.11.2002
;
; void _randomize (void);
; /* Initialize the random number generator */
;
.export __randomize
.import _srand
.include "atari.inc"
__randomize:
ldx VCOUNT ; Use vertical line counter as high byte
lda RTCLOK+2 ; Use clock as low byte
jmp _srand ; Initialize generator