42 lines
937 B
Tal
42 lines
937 B
Tal
|
( bitset.tal )
|
||
|
|
( )
|
||
|
|
( this hasn't actually been used yet. buyer beware! )
|
||
|
|
|
||
|
|
( x* -> addr* )
|
||
|
|
%FIND { #03 SFT2 ;bits ADD2 }
|
||
|
|
|
||
|
|
( x* -> mask^ i.e. 1<<(x&7) )
|
||
|
|
%MASK { SWP POP #07 AND #40 SFT #01 SWP SFT }
|
||
|
|
|
||
|
|
( x* -> unmask^ i.e. (1<(x&7))^ff )
|
||
|
|
%UNMASK { SWP POP #07 AND #40 SFT #01 #ff EOR SWP SFT }
|
||
|
|
|
||
|
|
%SIZE { #2000 }
|
||
|
|
|
||
|
|
|0100
|
||
|
|
|
||
|
|
@bits $2000 ( 8,192 bytes; 65,536 bits )
|
||
|
|
|
||
|
|
@add ( x* -> )
|
||
|
|
STH2k FIND ( byte^ [x*] )
|
||
|
|
STH2kr MASK ( byte^ mask^ [x*] )
|
||
|
|
ORA STH2r ( byte|mask^ x* )
|
||
|
|
FIND STA JMP2r
|
||
|
|
|
||
|
|
@get ( x* -> bool^ )
|
||
|
|
STH2k FIND LDA ( byte^ [x*] )
|
||
|
|
STH2r MASK AND ( byte&mask )
|
||
|
|
JMP2r
|
||
|
|
|
||
|
|
@del ( x* -> )
|
||
|
|
STH2k FIND ( byte^ [x*] )
|
||
|
|
STH2kr UNMASK ( byte^ unmask^ [x*] )
|
||
|
|
AND STH2r ( byte&mask^ x* )
|
||
|
|
FIND STA JMP2r
|
||
|
|
|
||
|
|
@clear ( -> )
|
||
|
|
;bits DUP2 SIZE ADD2 STH2 ( addr* [limit] )
|
||
|
|
&loop #0000 OVR2 STA2 ( write 0 to addr )
|
||
|
|
INC2 STH2kr LTH2 ,&loop JCN ( if addr+1 < limit loop )
|
||
|
|
POP2 POP2r JMP2r ( clean up stacks )
|