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1
blk/001
1
blk/001
@ -6,6 +6,7 @@ MASTER INDEX
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150 Extra words
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200 Z80 assembler 260 Cross compilation
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280 Z80 boot code 350 Core words
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410 PS/2 keyboard subsystem
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490 TRS-80 Recipe 520 Fonts
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550 TI-84+ Recipe 580 RC2014 Recipe
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620 Sega Master System Recipe
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11
blk/410
Normal file
11
blk/410
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@ -0,0 +1,11 @@
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PS/2 keyboard subsystem
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Provides (key) from a driver providing (ps2kc). That is, for a
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driver taking care of providing all key codes emanating from a
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PS/2 keyboard, this subsystem takes care of mapping those key-
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strokes to ASCII characters. This code is designed to be cross-
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compiled and loaded with drivers.
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Requires PS2_MEM to be defined.
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Load range: 411-414
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14
blk/411
Normal file
14
blk/411
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@ -0,0 +1,14 @@
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: PS2_SHIFT [ PS2_MEM LITN ] ;
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: PS2$ 0 PS2_SHIFT C! ;
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( A list of the values associated with the 0x80 possible scan
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codes of the set 2 of the PS/2 keyboard specs. 0 means no
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value. That value is a character that can be read in (key)
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No make code in the PS/2 set 2 reaches 0x80. )
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CREATE PS2_CODES
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( 00 ) 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C,
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( 08 ) 0 C, 0 C, 0 C, 0 C, 0 C, 9 C, '`' C, 0 C,
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( 10 ) 0 C, 0 C, 0 C, 0 C, 0 C, 'q' C, '1' C, 0 C,
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( 18 ) 0 C, 0 C, 'z' C, 's' C, 'a' C, 'w' C, '2' C, 0 C,
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( 20 ) 0 C, 'c' C, 'x' C, 'd' C, 'e' C, '4' C, '3' C, 0 C,
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( 28 ) 0 C, 32 C, 'v' C, 'f' C, 't' C, 'r' C, '5' C, 0 C,
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16
blk/412
Normal file
16
blk/412
Normal file
@ -0,0 +1,16 @@
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( 30 ) 0 C, 'n' C, 'b' C, 'h' C, 'g' C, 'y' C, '6' C, 0 C,
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( 38 ) 0 C, 0 C, 'm' C, 'j' C, 'u' C, '7' C, '8' C, 0 C,
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( 40 ) 0 C, ',' C, 'k' C, 'i' C, 'o' C, '0' C, '9' C, 0 C,
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( 48 ) 0 C, '.' C, '/' C, 'l' C, ';' C, 'p' C, '-' C, 0 C,
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( 50 ) 0 C, 0 C, ''' C, 0 C, '[' C, '=' C, 0 C, 0 C,
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( 58 ) 0 C, 0 C, 13 C, ']' C, 0 C, '\' C, 0 C, 0 C,
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( 60 ) 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 8 C, 0 C,
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( 68 ) 0 C, '1' C, 0 C, '4' C, '7' C, 0 C, 0 C, 0 C,
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( 70 ) '0' C, '.' C, '2' C, '5' C, '6' C, '8' C, 27 C, 0 C,
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( 78 ) 0 C, 0 C, '3' C, 0 C, 0 C, '9' C, 0 C, 0 C,
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( Same values, but shifted )
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( 00 ) 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C,
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( 08 ) 0 C, 0 C, 0 C, 0 C, 0 C, 9 C, '~' C, 0 C,
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( 10 ) 0 C, 0 C, 0 C, 0 C, 0 C, 'Q' C, '!' C, 0 C,
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( 18 ) 0 C, 0 C, 'Z' C, 'S' C, 'A' C, 'W' C, '@' C, 0 C,
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( 20 ) 0 C, 'C' C, 'X' C, 'D' C, 'E' C, '$' C, '#' C, 0 C,
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12
blk/413
Normal file
12
blk/413
Normal file
@ -0,0 +1,12 @@
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( 28 ) 0 C, 32 C, 'V' C, 'F' C, 'T' C, 'R' C, '%' C, 0 C,
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( 30 ) 0 C, 'N' C, 'B' C, 'H' C, 'G' C, 'Y' C, '^' C, 0 C,
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( 38 ) 0 C, 0 C, 'M' C, 'J' C, 'U' C, '&' C, '*' C, 0 C,
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( 40 ) 0 C, '<' C, 'K' C, 'I' C, 'O' C, ')' C, '(' C, 0 C,
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( 48 ) 0 C, '>' C, '?' C, 'L' C, ':' C, 'P' C, '_' C, 0 C,
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( 50 ) 0 C, 0 C, '"' C, 0 C, '{' C, '+' C, 0 C, 0 C,
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( 58 ) 0 C, 0 C, 13 C, '}' C, 0 C, '|' C, 0 C, 0 C,
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( 60 ) 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 8 C, 0 C,
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( 68 ) 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C,
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( 70 ) 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 27 C, 0 C,
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( 78 ) 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C,
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15
blk/414
Normal file
15
blk/414
Normal file
@ -0,0 +1,15 @@
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: _shift? ( kc -- f ) DUP 0x12 = SWAP 0x59 = OR ;
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: _get ( -- kc ) 0 ( dummy ) BEGIN DROP (ps2kc) DUP UNTIL ;
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: (key) _get
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DUP 0xe0 ( extended ) = IF ( ignore ) DROP (key) EXIT THEN
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DUP 0xf0 ( break ) = IF DROP ( )
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( get next kc and see if it's a shift )
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_get _shift? IF ( drop shift ) 0 PS2_SHIFT C! THEN
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( whether we had a shift or not, we return the next )
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(key) EXIT THEN
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DUP 0x7f > IF DROP (key) EXIT THEN
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DUP _shift? IF DROP 1 PS2_SHIFT C! (key) EXIT THEN
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( ah, finally, we have a gentle run-of-the-mill KC )
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PS2_CODES PS2_SHIFT @ IF 0x80 + THEN + C@
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DUP NOT IF DROP (key) THEN ;
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