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http://www.tienza.es/crux/src/www.jwz.org/xscreensaver/xscreensaver-5.05.tar.gz
[xscreensaver]
/
hacks
/
images
/
m6502
/
random.asm
diff --git a/hacks/images/m6502/random.asm
b/hacks/images/m6502/random.asm
new file mode 100644
(file)
index 0000000..
9ff5d2d
--- /dev/null
+++ b/
hacks/images/m6502/random.asm
@@ -0,0
+1,11
@@
+loop: lda $fe ; A=rnd
\r
+ sta $00 ; ZP(0)=A
\r
+ lda $fe
\r
+ and #$3 ; A=A&3
\r
+ clc ; Clear carry
\r
+ adc #$2 ; A+=2
\r
+ sta $01 ; ZP(1)=A
\r
+ lda $fe ; A=rnd
\r
+ ldy #$0 ; Y=0
\r
+ sta ($00),y ; ZP(0),ZP(1)=y
\r
+ jmp loop
\r