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collapseos/emul/xcomp.fs
Virgil Dupras 4939189233 emul: make blk operations much faster
It helps a bit with staging times.
2020-06-22 06:29:00 -04:00

36 lines
707 B
Forth

0xe800 CONSTANT RAMSTART
0xff00 CONSTANT RS_ADDR
0xfffa CONSTANT PS_ADDR
212 LOAD ( z80 assembler )
262 LOAD ( xcomp )
270 LOAD ( xcomp overrides )
282 LOAD ( boot.z80 )
353 LOAD ( xcomp core low )
: (emit) 0 PC! ;
: (key) 0 PC@ ;
: EFS@
1 3 PC! ( read )
256 /MOD 3 PC! 3 PC! ( blkid )
BLK( 256 /MOD 3 PC! 3 PC! ( dest )
;
: EFS!
2 3 PC! ( write )
256 /MOD 3 PC! 3 PC! ( blkid )
BLK( 256 /MOD 3 PC! 3 PC! ( dest )
;
: COLS 80 ; : LINES 32 ;
: AT-XY 6 PC! ( y ) 5 PC! ( x ) ;
380 LOAD ( xcomp core high )
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," CURRENT @ HERE ! "
," BLK$ "
," ' EFS@ BLK@* ! "
," ' EFS! BLK!* ! "
EOT,
ORG @ 256 /MOD 2 PC! 2 PC!
H@ 256 /MOD 2 PC! 2 PC!