a348ee9106
The few extra bytes they save in the core aren't worth the extra complexity. This was initially done in a context where I had troubles keeping the RC2014 binary with SDC inside the 8K limit. At this point, even with the few extra bytes we add here, we're at 7200 bytes, so I'd say we're fine.
97 lines
1.6 KiB
Forth
97 lines
1.6 KiB
Forth
0xff00 CONSTANT RS_ADDR
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0xfffa CONSTANT PS_ADDR
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RS_ADDR 0x80 - CONSTANT SYSVARS
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0 CONSTANT HERESTART
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: CODE ( natidx -- ) (entry) 0 C, C, ;
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VARIABLE ORG
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CREATE BIN( 0 ,
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: PC H@ ORG @ - ;
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262 LOAD ( xcomp )
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270 LOAD ( xcomp overrides )
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H@ ORG !
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0x15 ALLOT0
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( END OF STABLE ABI )
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H@ 4 + XCURRENT ! ( make next CODE have 0 prev field )
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0x00 CODE EXIT
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0x01 CODE (br)
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0x02 CODE (?br)
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0x03 CODE (loop)
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0x05 CODE (n)
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0x06 CODE (s)
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0x04 CODE 2>R
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0x07 CODE >R
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0x08 CODE R>
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0x09 CODE 2R>
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0x0a CODE EXECUTE
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0x0b CODE ROT
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0x0c CODE DUP
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0x0d CODE ?DUP
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0x0e CODE DROP
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0x0f CODE SWAP
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0x10 CODE OVER
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0x11 CODE PICK
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0x12 CODE (roll)
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0x13 CODE 2DROP
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0x14 CODE 2DUP
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0x15 CODE S0
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0x16 CODE 'S
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0x17 CODE AND
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0x18 CODE OR
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0x19 CODE XOR
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0x1a CODE NOT
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0x1b CODE +
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0x1c CODE -
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0x1d CODE *
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0x1e CODE /MOD
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0x1f CODE !
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0x20 CODE @
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0x21 CODE C!
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0x22 CODE C@
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0x23 CODE PC!
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0x24 CODE PC@
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0x25 CODE I
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0x26 CODE I'
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0x27 CODE J
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0x28 CODE BYE
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0x29 CODE (resSP)
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0x2a CODE (resRS)
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0x2b CODE S=
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0x2c CODE CMP
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0x2d CODE _find
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0x2e CODE 0
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0x2f CODE 1
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0x30 CODE -1
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0x31 CODE 1+
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0x32 CODE 1-
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0x33 CODE 2+
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0x34 CODE 2-
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0x35 CODE RSHIFT
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0x36 CODE LSHIFT
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353 LOAD ( xcomp core low )
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: (emit) 0 PC! ;
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: (key) 0 PC@ ;
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: EFS@
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1 3 PC! ( read )
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256 /MOD 3 PC! 3 PC! ( blkid )
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BLK( 256 /MOD 3 PC! 3 PC! ( dest )
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;
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: EFS!
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2 3 PC! ( write )
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256 /MOD 3 PC! 3 PC! ( blkid )
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BLK( 256 /MOD 3 PC! 3 PC! ( dest )
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;
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: COLS 80 ; : LINES 32 ;
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: AT-XY 6 PC! ( y ) 5 PC! ( x ) ;
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380 LOAD ( xcomp core high )
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(entry) _
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( Update LATEST )
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PC ORG @ 8 + !
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," BLK$ "
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," ' EFS@ BLK@* ! "
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," ' EFS! BLK!* ! "
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EOT,
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ORG @ 256 /MOD 2 PC! 2 PC!
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H@ 256 /MOD 2 PC! 2 PC!
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