collapseos/blk/414
2020-05-22 14:19:02 -04:00

16 lines
644 B
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: _shift? ( kc -- f ) DUP 0x12 = SWAP 0x59 = OR ;
: _get ( -- kc ) 0 ( dummy ) BEGIN DROP (ps2kc) DUP UNTIL ;
: (key) _get
DUP 0xe0 ( extended ) = IF ( ignore ) DROP (key) EXIT THEN
DUP 0xf0 ( break ) = IF DROP ( )
( get next kc and see if it's a shift )
_get _shift? IF ( drop shift ) 0 PS2_SHIFT C! THEN
( whether we had a shift or not, we return the next )
(key) EXIT THEN
DUP 0x7f > IF DROP (key) EXIT THEN
DUP _shift? IF DROP 1 PS2_SHIFT C! (key) EXIT THEN
( ah, finally, we have a gentle run-of-the-mill KC )
PS2_CODES PS2_SHIFT C@ IF 0x80 + THEN + C@
?DUP NOT IF (key) THEN ;