collapseos/blk/360

( returns negative value on error )
: _            ( c -- n )
    DUP '0' '9' =><= IF '0' - EXIT THEN
    DUP 'a' 'f' =><= IF 0x57 ( 'a' - 10 ) - EXIT THEN
    DROP -1 ( bad )
;
: _ph          ( a -- n f, parse hex )
    ( '0': ASCII 0x30 'x': 0x78 0x7830 )
    DUP 1+ @ 0x7830 = NOT IF 0 EXIT THEN ( a 0 )
    ( We have "0x" prefix )
    DUP C@ ( a len )
    0 SWAP 1+ ( len+1 ) 3 DO ( a r )
        OVER I + C@ ( a r c ) _ ( a r n )
        DUP 0< IF 2DROP 0 UNLOOP EXIT THEN
        SWAP 4 LSHIFT + ( a r*16+n ) LOOP
    NIP 1 ;
Move most of the high layer of comp core into the low one With KEY and EMIT being switch words, most of the high layer can be defined before drivers. In addition to this change, I've compacted core blocks which were becoming quite sparse. 2020-10-29 09:06:58 +11:00			`( returns negative value on error )`
			`: _ ( c -- n )`
			`DUP '0' '9' =><= IF '0' - EXIT THEN`
			`DUP 'a' 'f' =><= IF 0x57 ( 'a' - 10 ) - EXIT THEN`
			`DROP -1 ( bad )`
core: make parse and format words a bit tighter 2020-08-31 10:15:55 +10:00			`;`
Move most of the high layer of comp core into the low one With KEY and EMIT being switch words, most of the high layer can be defined before drivers. In addition to this change, I've compacted core blocks which were becoming quite sparse. 2020-10-29 09:06:58 +11:00			`: _ph ( a -- n f, parse hex )`
			`( '0': ASCII 0x30 'x': 0x78 0x7830 )`
			`DUP 1+ @ 0x7830 = NOT IF 0 EXIT THEN ( a 0 )`
			`( We have "0x" prefix )`
			`DUP C@ ( a len )`
			`0 SWAP 1+ ( len+1 ) 3 DO ( a r )`
			`OVER I + C@ ( a r c ) _ ( a r n )`
			`DUP 0< IF 2DROP 0 UNLOOP EXIT THEN`
			`SWAP 4 LSHIFT + ( a r*16+n ) LOOP`
			`NIP 1 ;`