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2 Commits
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06a4674317
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06a4674317 | ||
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a476773813 |
4
blk/050
4
blk/050
@ -4,6 +4,8 @@ Memory
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! n a -- Store n in address a
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? a -- Print value of addr a
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+! n a -- Increase value of addr a by n
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BIT@ b a -- f Get bit b from addr a.
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BIT! f b a -- Set bit b to f in addr a.
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C@ a -- c Set c to byte at address a
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C@+ a -- a+1 c Fetch c from a and inc a.
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C@- a -- a-1 c Fetch c from a and dec a.
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@ -11,6 +13,4 @@ C! c a -- Store byte c in address a
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C!+ c a -- a+1 Store byte c in a and inc a.
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C!- c a -- a-1 Store byte c in a and dec a.
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CURRENT -- a Set a to wordref of last added entry.
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CURRENT* -- a A pointer to active CURRENT*. Useful
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when we have multiple active dicts.
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(cont.)
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2
blk/051
2
blk/051
@ -1,3 +1,5 @@
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CURRENT* -- a A pointer to active CURRENT*. Useful
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when we have multiple active dicts.
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FILL a n b -- Fill n bytes at addr a with val b.
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HERE -- a Push HERE's address
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H@ -- a HERE @
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10
blk/404
10
blk/404
@ -4,9 +4,11 @@
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DUP NOT IF DROP 0x0c RAM+ @ THEN ( 0c == C<* )
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EXECUTE
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;
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: , HERE @ ! HERE @ 2+ HERE ! ;
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: C, HERE @ C! HERE @ 1+ HERE ! ;
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: BIT@ ( bit addr -- f ) C@ SWAP RSHIFT 0x01 AND ;
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: BIT! ( f bit addr -- )
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SWAP 0x01 SWAP LSHIFT ROT ( addr mask f )
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IF OVER C@ OR
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ELSE 0xff XOR OVER C@ AND THEN ( addr flg )
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SWAP C! ;
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4
blk/568
4
blk/568
@ -7,3 +7,7 @@ CREATE _atbl
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0x20 C, 'Y' C, 'T' C, 'O' C, 'J' C, 'E' C, 'B' C, 0 C,
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0 C, 'X' C, 'S' C, 'N' C, 'I' C, 'D' C, 'A' C, 0x80 C,
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0 C, 0 C, 0 C, 0 C, 0 C, 0x81 ( 2nd ) C, 0 C, 0x7f C,
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: _2nd@ 0 [ KBD_MEM LITN ] BIT@ ;
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: _2nd! 0 [ KBD_MEM LITN ] BIT! ;
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: _alock@ 1 [ KBD_MEM LITN ] BIT@ ;
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: _alock^ _alock@ NOT 1 [ KBD_MEM LITN ] BIT! ;
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14
blk/570
14
blk/570
@ -1,6 +1,12 @@
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: _tbl^ ( swap input tbl )
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_atbl = IF _dtbl ELSE _atbl THEN ;
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: (key)
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_dtbl 0 ( dummy ) BEGIN ( tbl 0 )
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DROP DUP ( tbl ) _gti + C@
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DUP 0x80 = IF ( alpha ) 2DROP _atbl 0 THEN
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DUP UNTIL ( tbl c -- loop if null ) SWAP DROP
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0 _2nd! 0 ( lastchr ) BEGIN
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_alock@ IF _atbl ELSE _dtbl THEN
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OVER 0x80 ( alpha ) =
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IF _tbl^ _2nd@ IF _alock^ THEN THEN
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SWAP 0x81 = _2nd!
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_gti + C@
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DUP 0 0x80 >< UNTIL ( loop if not in range )
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_wait ;
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: KBD$ 0 [ KBD_MEM LITN ] C! ;
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BIN
emul/forth.bin
BIN
emul/forth.bin
Binary file not shown.
@ -1,6 +1,7 @@
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0x8000 CONSTANT RAMSTART
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0xb000 CONSTANT RS_ADDR
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RAMSTART 0x70 + CONSTANT LCD_MEM
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RAMSTART 0x72 + CONSTANT KBD_MEM
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0x01 CONSTANT KBD_PORT
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212 LOAD ( z80 assembler )
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262 LOAD ( xcomp )
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@ -25,6 +26,6 @@ PC ORG @ 8 + !
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422 437 XPACKR ( core )
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558 560 XPACKR ( LCD high )
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438 451 XPACKR ( print fmt readln )
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," : _ LCD$ (ok) RDLN$ ; _ "
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," : _ LCD$ KBD$ (ok) RDLN$ ; _ "
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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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