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24e588019b
...
be66d7b4a2
4
blk/001
4
blk/001
@ -8,8 +8,8 @@ MASTER INDEX
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280 Z80 boot code 350 ACIA driver
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370 SD Card driver 390 Inner core
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420 Core words 480 AT28 Driver
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490 TRS-80 Recipe 520 Fonts
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550 TI-84+ Recipe
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490 TRS-80 Recipe
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4
blk/054
4
blk/054
@ -10,7 +10,7 @@ MOD a b -- c a % b -> c
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AND a b -- c a & b -> c
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OR a b -- c a | b -> c
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XOR a b -- c a ^ b -> c
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LSHIFT a u -- c a << u -> c
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RSHIFT a u -- c a >> u -> c
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Shortcuts: 1+ 2+ 1- 2-
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2
blk/215
2
blk/215
@ -6,7 +6,7 @@
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( A, spits an assembled byte, A,, spits an assembled word
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Both increase PC. To debug, change C, to .X )
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: A, C, ; : A,, SPLITB A, A, ;
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: <<3 3 LSHIFT ; : <<4 4 LSHIFT ;
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: <<3 8 * ; : <<4 16 * ;
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( As a general rule, IX and IY are equivalent to spitting an
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extra 0xdd / 0xfd and then spit the equivalent of HL )
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: IX 0xdd A, HL ; : IY 0xfd A, HL ;
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12
blk/334
12
blk/334
@ -1,12 +0,0 @@
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CODE RSHIFT ( n u -- n )
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BC POPqq, ( u )
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HL POPqq, ( n )
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chkPS,
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B C LDrr,
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B INCr, B DECr, IFNZ,
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BEGIN,
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H SRLr, L RRr,
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DJNZ, AGAIN,
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THEN,
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HL PUSHqq,
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;CODE
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13
blk/335
13
blk/335
@ -1,13 +0,0 @@
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CODE LSHIFT ( n u -- n )
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BC POPqq, ( u )
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HL POPqq, ( n )
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chkPS,
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B C LDrr,
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B INCr, B DECr, IFNZ,
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BEGIN,
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L SLAr, H RLr,
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DJNZ, AGAIN,
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THEN,
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HL PUSHqq,
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;CODE
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4
blk/379
4
blk/379
@ -9,8 +9,8 @@
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: SDCMDR7
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_sdcSel
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_cmd ( r )
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_idle 8 LSHIFT _idle + ( r arg1 )
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_idle 8 LSHIFT _idle + ( r arg1 arg2 )
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_idle 256 * _idle + ( r arg1 )
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_idle 256 * _idle + ( r arg1 arg2 )
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_sdcDesel
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;
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2
blk/383
2
blk/383
@ -10,6 +10,6 @@
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SWAP 1+ ( crc a+1 )
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LOOP
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DROP ( crc1 )
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_idle 8 LSHIFT _idle + ( crc2 )
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_idle 256 * _idle + ( crc2 )
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_wait DROP _sdcDesel
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= NOT IF _err THEN ;
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6
blk/499
6
blk/499
@ -3,14 +3,14 @@
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( 4 256b sectors per block, 10 sec per cyl, 40 cyl max )
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10 /MOD ( sec cyl )
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DUP 39 > IF _err THEN
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8 LSHIFT + ( cylsec )
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256 * + ( cylsec )
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;
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: FD@! ( wref blk -- )
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1 @DCSTAT NOT IF _err THEN
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2 LSHIFT ( 4 * -- wr sec )
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4 * ( wr sec )
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4 0 DO ( wr sec )
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DUP I + _cylsec ( wr sec cs )
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I 8 LSHIFT BLK( + ( wr sec cs addr )
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I 256 * BLK( + ( wr sec cs addr )
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1 ROT ROT ( wr sec drv cs addr )
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4 PICK EXECUTE NOT IF _err THEN
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LOOP 2DROP ;
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13
blk/520
13
blk/520
@ -1,13 +0,0 @@
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Fonts
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Fonts are kept in "source" form in the following blocks and
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then compiled to binary bitmasks by the following code. In
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source form, fonts are a simple sequence of '.' and 'X'. '.'
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means empty, 'X' means filled. Glyphs are entered one after the
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other, starting at 0x21 and ending at 0x7e. To be space
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efficient in blocks, we align glyphs horizontally in the blocks
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to fit as many character as we can. For example, a 5x7 font
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would mean that we would have 12x2 glyphs per block.
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521 Font compiler 530 3x5 font
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532 5x7 font 536 7x7 font
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6
blk/521
6
blk/521
@ -1,6 +0,0 @@
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( Converts "dot-X" fonts to binary "glyph rows". One byte for
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each row. In a 5x7 font, each glyph thus use 7 bytes.
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Resulting bytes are aligned to the left of the byte.
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Therefore, for a 5-bit wide char, "X.X.X" translates to
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0b10101000. Left-aligned bytes are easier to work with when
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compositing glyphs. )
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16
blk/522
16
blk/522
@ -1,16 +0,0 @@
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: _g ( given a top-left of dot-X in BLK(, spit 5 bin lines )
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5 0 DO
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0 3 0 DO ( a r )
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2 *
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OVER J 64 * I + + C@ 'X' = IF 1+ THEN
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LOOP 32 * C, LOOP DROP ;
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: _l ( spit a line of u glyphs )
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( u ) 0 DO ( a )
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DUP I 3 * + _g
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LOOP DROP ;
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: CPFNT3x5
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0 , 0 , 0 C, ( space char )
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530 LOAD BLK( 21 _l 192 + 21 _l 192 + 21 _l ( 63 )
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531 LOAD BLK( 21 _l 192 + 10 _l ( 94! )
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;
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16
blk/530
16
blk/530
@ -1,16 +0,0 @@
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.X.X.XX.X.XXX...X..X...XX...X...............X.X..X.XX.XX.X.XXXX
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.X.X.XXXXXX...XX.X.X..X..X.XXX.X............XX.XXX...X..XX.XX..
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.X........XX.X..X.....X..X..X.XXX...XXX....X.X.X.X..X.XX.XXXXX.
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......XXXXX.X..X.X....X..X.X.X.X..X.......X..X.X.X.X....X..X..X
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.X....X.X.X...X.XX.....XX........X......X.X...X.XXXXXXXX...XXX.
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.XXXXXXXXXXX........X...X..XX..X..X.XX..XXXX.XXXXXX.XXX.XXXXXXX
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X....XX.XX.X.X..X..X.XXX.X...XXXXX.XX.XX..X.XX..X..X..X.X.X...X
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XXX.X.XXXXXX......X.......X.X.XXXXXXXX.X..X.XXX.XX.X.XXXX.X...X
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X.XX..X.X..X.X..X..X.XXX.X....X..X.XX.XX..X.XX..X..X.XX.X.X...X
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XXXX..XXXXX....X....X...X...X..XXX.XXX..XXXX.XXXX...XXX.XXXXXX.
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X.XX..X.XXX.XXXXX.XXXXX..XXXXXX.XX.XX.XX.XX.XXXXXXXX..XXX.X....
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XX.X..XXXX.XX.XX.XX.XX.XX...X.X.XX.XX.XX.XX.X..XX..X....XX.X...
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X..X..XXXX.XX.XXX.X.XXX..X..X.X.XX.XXXX.X..X..X.X...X...X......
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XX.X..X.XX.XX.XX..XXXX.X..X.X.X.XX.XXXXX.X.X.X..X....X..X......
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X.XXXXX.XX.XXXXX...XXX.XXX..X.XXX.X.X.XX.X.X.XXXXXX..XXXX...XXX
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!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
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11
blk/531
11
blk/531
@ -1,11 +0,0 @@
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X.....X.......X....XX...X...X...XX..XX.......................X.
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.X.XX.X...XX..X.X.X...X.X........X.X.X.X.XXX..X.XX..XX.XX.XXXXX
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.....XXX.X...XXX.XXX.X.XXX..X...XXX..X.XXXX.XX.XX.XX.XX..XX..X.
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...XXXX.XX..X.XXX.X...XXX.X.X...XX.X.X.X.XX.XX.XXX..XXX....X.X.
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...XXXXX..XX.XX.XXX..XX.X.X.X.XX.X.X.XXX.XX.X.X.X....XX..XX..XX
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...................XX.X.XX.....................................
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X.XX.XX.XX.XX.XXXX.X..X..X..XX
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X.XX.XX.X.X..X..XXX...X...XXX.
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X.XX.XXXX.X..X.XX..X..X..X....
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XXX.X.X.XX.X.X.XXX.XX.X.XX....
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`abcdefghijklmnopqrstuvwxyz{|}~
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17
blk/532
17
blk/532
@ -1,17 +0,0 @@
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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...............................................................
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6
blk/550
6
blk/550
@ -1,6 +0,0 @@
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TI-84+ Recipe
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Support code for the TI-84+ recipe. Contains drivers for the
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keyboard and LCD.
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551 LCD
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16
blk/551
16
blk/551
@ -1,16 +0,0 @@
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TI-84+ LCD driver
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Implement (emit) on TI-84+ (for now)'s LCD screen. Load with
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"555 LOAD".
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The screen is 96x64 pixels. The 64 rows are addressed directly
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with CMD_ROW but columns are addressed in chunks of 6 or 8 bits
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(there are two modes).
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In 6-bit mode, there are 16 visible columns. In 8-bit mode,
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there are 12.
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Note that "X-increment" and "Y-increment" work in the opposite
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way than what most people expect. Y moves left and right, X
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moves up and down.
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(cont.)
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16
blk/552
16
blk/552
@ -1,16 +0,0 @@
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# Z-Offset
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This LCD has a "Z-Offset" parameter, allowing to offset rows on
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the screen however we wish. This is handy because it allows us
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to scroll more efficiently. Instead of having to copy the LCD
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ram around at each linefeed (or instead of having to maintain
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an in-memory buffer), we can use this feature.
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The Z-Offet goes upwards, with wrapping. For example, if we
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have an 8 pixels high line at row 0 and if our offset is 8,
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that line will go up 8 pixels, wrapping itself to the bottom of
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the screen.
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The principle is this: The active line is always the bottom
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one. Therefore, when active row is 0, Z is FNT_HEIGHT+1, when
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row is 1, Z is (FNT_HEIGHT+1)*2, When row is 8, Z is 0. (cont.)
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16
blk/553
16
blk/553
@ -1,16 +0,0 @@
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# 6/8 bit columns and smaller fonts
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If your glyphs, including padding, are 6 or 8 pixels wide,
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you're in luck because pushing them to the LCD can be done in a
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very efficient manner. Unfortunately, this makes the LCD
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unsuitable for a Collapse OS shell: 6 pixels per glyph gives us
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only 16 characters per line, which is hardly usable.
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This is why we have this buffering system. How it works is that
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we're always in 8-bit mode and we hold the whole area (8 pixels
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wide by FNT_HEIGHT high) in memory. When we want to put a glyph
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to screen, we first read the contents of that area, then add
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our new glyph, offsetted and masked, to that buffer, then push
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the buffer back to the LCD. If the glyph is split, move to the
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next area and finish the job.
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(cont.)
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3
blk/554
3
blk/554
@ -1,3 +0,0 @@
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That being said, it's important to define clearly what CURX and
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CURY variable mean. Those variable keep track of the current
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position *in pixels*, in both axes.
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16
blk/555
16
blk/555
@ -1,16 +0,0 @@
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( Required config: TI_MEM )
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: TI_MEM+ [ TI_MEM LITN ] + ;
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: LCD_PORT_CMD 0x10 ;
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: LCD_PORT_DATA 0x11 ;
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: FNT_WIDTH 3 ;
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: FNT_HEIGHT 5 ;
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( Current Y position on the LCD, that is, where we're going to
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spit our next glyph. )
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: LCD_CURY 0 TI_MEM+ ;
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: LCD_CURX 1 TI_MEM+ ;
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( two pixel buffers that are 8 pixels wide (1b) by FNT_HEIGHT
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pixels high. This is where we compose our resulting pixels
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blocks when spitting a glyph. )
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: LCD_BUF 2 TI_MEM+ ;
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1 2 LOADR+
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11
blk/556
11
blk/556
@ -1,11 +0,0 @@
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: _wait ( Wait until the lcd is ready to receive a command )
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( When 7th bit is cleared, we can send a new command )
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BEGIN LCD_PORT_CMD PC@ 0x80 AND NOT UNTIL ;
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: _cmd LCD_PORT_CMD PC! _wait ;
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: _data! LCD_PORT_DATA PC! _wait ;
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: _data@ LCD_PORT_DATA PC@ _wait ;
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: LCDOFF 0x02 ( CMD_DISABLE ) _cmd ;
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: _col! ( col -- )
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0x20 ( CMD_COL ) + _cmd ;
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: _row! ( row -- )
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0x80 ( CMD_ROW ) + _cmd ;
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3
blk/557
3
blk/557
@ -1,3 +0,0 @@
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( Load a "glyph line" from buffer, left part being in MSB and
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right part being in LSB. )
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: _gl@
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5
blk/558
5
blk/558
@ -1,5 +0,0 @@
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: _glyph> ( a -- )
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LCD_CURY C@ _row! LCD_CURX C@ 8 /MOD _col! ( a coff )
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0x05 ( XINC ) _cmd _data@ DROP
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FNT_HEIGHT 0 DO LOOP
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BIN
emul/forth.bin
BIN
emul/forth.bin
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