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annotate code_part1/OSTC_code_asm_part1/aa_wordprocessor.asm @ 841:8d73c9dcf851 default tip

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3.16 release
author mh
date Tue, 24 Oct 2023 10:38:04 +0200
parents 2750099bf5bb
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 ;=============================================================================
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2 ;
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3 ; File aa_wordprocessor.asm
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4 ;
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5 ; Anti-aliased word processor
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6 ;
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7 ; This program is free software: you can redistribute it and/or modify
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8 ; it under the terms of the GNU General Public License as published by
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9 ; the Free Software Foundation, either version 3 of the License, or
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10 ; (at your option) any later version.
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11 ;
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12 ; This program is distributed in the hope that it will be useful,
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13 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 ; GNU General Public License for more details.
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16 ;
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17 ; You should have received a copy of the GNU General Public License
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18 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 ;
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20 ; Copyright (c) 2010, JD Gascuel.
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21 ;=============================================================================
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22 ; HISTORY
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23 ; 2010-11-22 : [jDG] Creation.
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24 ; 2010-12-01 : [jDG] Adding 3bits antialiased fonts.
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25 ; 2010-12-30 : [jDG] Revised to put temp into ACCESSRAM0
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26 ;
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27 ; BUGS :
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28 ; * If the three fonts are not in the same half of the PROM memory, TBLPTRU
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29 ; will be badly set, and font48 or font90 will display giberish...
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30 ;=============================================================================
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31 ;
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32 ; MEMORY FOOTPRINT:
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33 ;------------------
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34 ;
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35 ; wp_wordprocessor : 8KB, including fonts.
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36 ; aa_wordprocessor : 0.5KB code
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37 ; + 3.5KB aa_font28 (reduced to 99 chars)
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38 ; + 1.6KB aa_font48
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39 ; + 2.2KB aa_font90
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40 ; = 7.9 KB including fonts...
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41 ;
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42 ; Input registers:
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43 ; letter:26 String to print.
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44 ; win_font Font size (0=small, 1=medium, 2=large)
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45 ; win_color1:2 16bits unpacked color
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46 ; win_top, win_leftx2 Position on screen
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47 ; win_inverse Inverse video mode.
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48 ;
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49 ; Available general purpose registers:
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50 ; PRODH, PRODL (needed for array indexing)
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51 ; FSRx 12bits. Usefull as RAM pointers.
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52 ;=============================================================================
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53 ; Temporary variables are overlayed in bank 0 ACCESS, used also by C-code
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54 ; (p2_deco), MPLAB math and stdlib libraries.
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55
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56 CBLOCK 0x000
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57 aa_flags ; Various flags for aa_wordprocessor
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58 aa_width:2 ; Width in pixels (0..319)
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59 aa_bitlen ; Count of pixels when decoding bitmaps.
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60 aa_start:2 ; PROM ptr to start of encoded bitmap
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61 aa_end:2 ; and end of it.
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62 aa_temp:2 ; Current color, divided by 2 or 4
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63 ENDC
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64
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65 ; Flags allocation:
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66 #define aa_antialias aa_flags,0
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67 #define aa_color_quart aa_flags,1
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68 #define aa_color_half aa_flags,2
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69
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70 ;------------------------------------------------------------------------------
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71 ; Setup pointers for a char:
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72 ; Inputs WREG = char to draw, win_font
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73 ; Output aa_start, aa_end, win_height, aa_flags
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74 ; Trashed PRODH, PRODL, TBLPTR, TABLAT
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75 ;
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76 aa_char_setup:
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77 movwf PRODL,A ; save char into PROD for now.
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78
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79 movf win_font,W,BANKED ; Get font number (updates Z flag)
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80 bnz aa_char_1
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81
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82 ; SMALL font ---------------------------------------------------------
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83 ; Font SMALL character folding...
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84 aa_char_0:
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85 movlw LOW aa_font28_block
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86 movwf TBLPTRL,A
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87 movlw HIGH aa_font28_block
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88 movwf TBLPTRH,A
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89 bra aa_char_3
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90
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91 ; MEDIUM font --------------------------------------------------------
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92 aa_char_1:
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93 decfsz WREG,A ; This is medium font ???
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94 bra aa_char_2
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95
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96 ; Font MEDIUM block:
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97 movlw LOW aa_font48_block
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98 movwf TBLPTRL,A
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99 movlw HIGH aa_font48_block
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100 movwf TBLPTRH,A
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101 bra aa_char_3
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102
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103 ; LARGE font ---------------------------------------------------------
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104 aa_char_2:
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105 decfsz WREG,A ; This is medium font ???
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106 bra aa_char_2a
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107
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108 ; Font LARGE block:
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109 movlw LOW aa_font90_block
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110 movwf TBLPTRL,A
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111 movlw HIGH aa_font90_block
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112 movwf TBLPTRH,A
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113 bra aa_char_3
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114
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115 ; HUGE font ---------------------------------------------------------
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116 aa_char_2a:
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117 ; Font HUGE block:
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118 movlw LOW aa_font120_block
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119 movwf TBLPTRL,A
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120 movlw HIGH aa_font120_block
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121 movwf TBLPTRH,A
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122
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123
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124 ; Execute font block -------------------------------------------------
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125 aa_char_3:
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126 ; This is safe iff the three fonts are in the same code segment
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127 ; (and that segment do not span the 64K edge...)
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128 movlw UPPER aa_font28_block
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129 movwf TBLPTRU,A
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130
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131 ; Proceed to character substitutions
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132 aa_char_30:
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133 tblrd*+ ; Read FROM char
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134 movf TABLAT,W ; Get it, and set Z,N
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135 bz aa_char_32 ; Break at end of translations
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136
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137 tblrd*+ ; Read TO char
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138 cpfseq PRODL,A ; FROM == current char ?
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139 bra aa_char_30 ; Different: loop
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140 movff TABLAT, PRODL ; make substitution
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141 bra aa_char_30 ; Loop.
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142
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143 ; Make sure char is in the available range
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144 aa_char_32:
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145 tblrd*+ ; Read first char
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146 movf TABLAT,W ; get it.
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147 subwf PRODL,F ; (char - first) --> PRODL
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148
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149 tblrd*+ ; Read nb chars
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150 movf TABLAT,W ; nbchars --> WREG
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151 tblrd*+ ; Read default char
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152 cpfslt PRODL ; if char > WREG ?
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153 movff TABLAT,PRODL ; replace PRODL
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154
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155 ; Decode font height and anti-aliasing mode
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156 clrf aa_flags,ACCESS ; Default to no AA
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157 tblrd*+ ; Read font height + AA flag
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158 movf TABLAT,W ; into WREG
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159 bnn aa_char_34 ; High bit set ?
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160 bsf aa_antialias,ACCESS ; YES : then the font is AA.
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161 aa_char_34:
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162 andlw 0x7F ; Keep just font height,
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163 movwf win_height,BANKED ; then save it (its a register)
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164
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165 ; Set PROM pointer to the char index
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166 movf PRODL,W ; Read back char
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167 mullw 2 ; PROD = 2*(char - base), TBLPTR=idx
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168 movf PRODL,W
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169 addwf TBLPTRL,F ; Add into TBLPTR (low byte)
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170 movf PRODH,W
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171 addwfc TBLPTRH,F ; and high byte.
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172
123
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173 ; Read start and stop pointers
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diff changeset
174 tblrd*+ ; aa_start = PROM16(*tblptr++)
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175 movff TABLAT,aa_start+0 ; Read low byte
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176 tblrd*+
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177 movff TABLAT,aa_start+1 ; and high byte
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178
123
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diff changeset
179 tblrd*+ ; aa_end = PROM16(*tblptr++)
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180 movff TABLAT,aa_end+0 ; Read low byte
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diff changeset
181 tblrd*+
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diff changeset
182 movff TABLAT,aa_end+1 ; and high byte
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183
123
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diff changeset
184 return
83
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185
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
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186 ;------------------------------------------------------------------------------
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187 ; Character width
123
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diff changeset
188 ; Inputs aa_start, aa_end, aa_width, win_height, aa_flags
83
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189 ; Output width added to aa_width
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190 ; Trashed aa_bitlen, TBLPTR, TABLAT
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191 ;
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192 aa_char_width:
123
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193 movff aa_start+0, TBLPTRL ; TBLPTR = aa_start
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194 movff aa_start+1, TBLPTRH
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195 clrf aa_bitlen,ACCESS ; clear reminders...
83
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196
123
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diff changeset
197 ; Read bitmap byte, and decode length:
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198 aa_char_width_1:
123
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diff changeset
199 ifdef AA_BYTE_SWAP
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200 btg TBLPTRL,0,A ; Toggle low ptr bit.
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201 tblrd*
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202 movf TABLAT,W,A ; Store to WREG
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203 btg TBLPTRL,0,A ; Get is back
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204 tblrd*+ ; then increment (but trash TABLAT)
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205 movwf TABLAT,A ; Then restore copy to TABLAT.
6a94f96e9cea The big cleanup, again.
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206 else
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207 tblrd*+ ; Normal read...
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208 movf TABLAT,W,A ; Store copy to WREG
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209 endif
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210 btfss aa_antialias,ACCESS ; Antialiased font ?
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211 bra aa_char_width_10 ; No: always 7 bits count
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212
123
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213 bn aa_char_width_10 ; Non-white pixels ?
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214 andlw 0x1F ; Yes : 5 bits count.
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215 aa_char_width_10:
123
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diff changeset
216 andlw 0x7F ; No: 7 bit count.
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diff changeset
217 incf WREG,A ; WREG = repetition count
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218 addwf aa_bitlen,F,ACCESS ; Add remaining pixels from last code.
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diff changeset
219
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220 movf win_height,W,BANKED ; WREG = - height
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221 negf WREG,A
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222
123
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223 ; This is a hand-made division by successive substraction of height
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224 aa_char_width_2:
123
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diff changeset
225 addwf aa_bitlen,F,ACCESS ; Try to substract win_height
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226 bn aa_char_width_3 ; If neg it was a bad idea...
83
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227
123
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228 infsnz aa_width+0,F,ACCESS ; Succeded: do a 16bit increment
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229 incf aa_width+1,F,ACCESS ; on the aa_width counter.
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230 bra aa_char_width_2 ; and loop.
83
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231
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232 aa_char_width_3:
123
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233 negf WREG,A ; WREG = +height
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234 addwf aa_bitlen,F,ACCESS ; Restore true reminder.
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235
123
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236 ; Are we done ?
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237 movf TBLPTRL,W,A ; Compare TBLPTR to aa_end
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238 cpfseq aa_end+0,ACCESS
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239 bra aa_char_width_1 ; Loop if LOW is different
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240 movf TBLPTRH,W,A
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241 cpfseq aa_end+1,ACCESS ; Loop to if HIGH is different
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242 bra aa_char_width_1
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243
123
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diff changeset
244 return
83
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245
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246 ;------------------------------------------------------------------------------
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247 ; String width
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248 ; Inputs letter (SHOULD BE NULL TERMINATED)
123
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249 ; Output aa_width, win_height
83
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250 ; Trashed PROD, TBLPTR, FSR2, aa_bitlen, aa_start, aa_end, aa_flags
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251 ;
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252 aa_string_width:
123
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253 lfsr FSR2, letter ; FSR2 pointer to start of string.
83
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254
123
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255 clrf aa_width+0,ACCESS ; Clear width sum.
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diff changeset
256 clrf aa_width+1,ACCESS ; (16 bit counter)
83
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257
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258 aa_string_width_1:
123
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diff changeset
259 movf POSTINC2,W,A ; WREG = *FSR2++
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260 bz aa_string_width99 ; Exit if null byte encountered.
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261
123
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262 rcall aa_char_setup ; setup aa_start / aa_end
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263 rcall aa_char_width ; sum-up width into aa_width
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264 bra aa_string_width_1 ; and loop.
83
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265
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266 aa_string_width99:
123
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diff changeset
267 return
83
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268
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269 ;------------------------------------------------------------------------------
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270 ; Decode a compressed char.
123
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271 ; Inputs aa_start, aa_end, win_height, win_invert, win_color1, win_color2
83
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272 ; Output none
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273 ; Trashed TBLPTR, TABLAT, PROD, aa_bitlen, aa_flags, aa_colorDir:2
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274 ;
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275 aa_decode_char:
123
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276 movff aa_start+0, TBLPTRL ; TBLPTR = aa_start
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277 movff aa_start+1, TBLPTRH
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278
123
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279 ; Read bitmap byte, and decode color & length
83
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280 aa_decode_1:
123
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281 ifdef AA_BYTE_SWAP
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282 btg TBLPTRL,0,A ; Toggle low ptr bit.
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diff changeset
283 tblrd*
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284 movf TABLAT,W,A ; Store to WREG
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diff changeset
285 btg TBLPTRL,0,A ; Get is back
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diff changeset
286 tblrd*+ ; then increment (but trash TABLAT)
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287 movwf TABLAT,A ; Then restore copy to TABLAT.
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diff changeset
288 else
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289 tblrd*+ ; Normal read...
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290 movf TABLAT,W,A ; Store copy to WREG
6a94f96e9cea The big cleanup, again.
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291 endif
6a94f96e9cea The big cleanup, again.
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diff changeset
292 btfss aa_antialias,ACCESS ; Antialiased font ?
6a94f96e9cea The big cleanup, again.
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diff changeset
293 bra aa_decode_10 ; No: always 7 bits count
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294 bn aa_decode_10 ; Non-white pixels ?
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295 andlw 0x1F ; Yes : 5 bits count.
83
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296 aa_decode_10:
123
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diff changeset
297 andlw 0x7F ; No: 7 bit count.
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diff changeset
298 incf WREG,A
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299 movwf aa_bitlen,ACCESS ; repetition count --> aa_bitlen
83
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300
123
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301 ;---- COLOR DECODING -------------------------------------------------
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302 ;
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303 ; Code Normal Inverse
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304 ; 1xx 0% 100% : Managed by aa_decode_13
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305 ; 011 25% 75%
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306 ; 010 50% 50%
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307 ; 001 75% 25%
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308 ; 000 100% 0% : Managed by aa_decode_13 too.
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diff changeset
309 ;
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diff changeset
310 movf TABLAT,W,A ; Get back code
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diff changeset
311 btfss aa_antialias,ACCESS ; Antialiased font ?
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diff changeset
312 bra aa_decode_13 ; NO: 1bit case
83
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313
123
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diff changeset
314 ; Asymetry test: 1xx code is another case for 1bit color.
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diff changeset
315 ; This have to be done before inverse video, because
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diff changeset
316 ; of the asymetric processing !
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317 bn aa_decode_13 ; decode as not-aa
83
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318
123
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diff changeset
319 ; Manage 000 special case too:
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diff changeset
320 andlw 0xE0 ; Select color bits
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diff changeset
321 bz aa_decode_13 ; That's a 000 !
83
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322
123
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diff changeset
323 ; Apply reverse video, in a reversed way
6a94f96e9cea The big cleanup, again.
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diff changeset
324 btfss win_invert,0 ; Inverse video mode ?
6a94f96e9cea The big cleanup, again.
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diff changeset
325 sublw 0x80
83
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326
123
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diff changeset
327 ; Move the two bits to aa_color_half and aa_color_quarter:
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diff changeset
328 swapf WREG ; --> 0000.0LL0 byte
6a94f96e9cea The big cleanup, again.
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diff changeset
329 iorlw b'001' ; We are in AA mode, don't forget it !
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diff changeset
330 movwf aa_flags,ACCESS ; save that to aa_color_(half/quad)/AA flags.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
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331
123
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diff changeset
332 ;---- 2 bit x RGB(16bits) computation --------------------------------
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diff changeset
333 clrf PRODL ; We will accumulate result here...
6a94f96e9cea The big cleanup, again.
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diff changeset
334 clrf PRODH
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
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335
142
8b75ba28d641 Screen-flipping custom function.
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parents: 123
diff changeset
336 ; Take color div 2 into aa_temp. Max red = 15/31
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
337 rrcf win_color1,W,BANKED ; xRRRRxGG
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
338 andlw b'01111011' ; 0RRRR0GG (don't change C)
142
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
339 movwf aa_temp+0,ACCESS
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
340 rrcf win_color2,W,BANKED ; GGGxBBBB
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
341 andlw b'11101111' ; GGG0BBBB
142
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
342 movwf aa_temp+1,ACCESS
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
343
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
344 btfss aa_color_half,ACCESS
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
345 bra aa_decode_12
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
346
142
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
347 movff aa_temp+0,PRODH ; Add color/2 if bit set.
681
6e456a6398e0 Hardware4 support
heinrichsweikamp
parents: 260
diff changeset
348 movff aa_temp+1,PRODL ; DISPLAY is big endian, so swap here.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
349 aa_decode_12:
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
350 btfss aa_color_quart,ACCESS
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
351 bra aa_decode_12b
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
352
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
353 ; Divide it once again by 2. Max red = 7/31.
142
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
354 rrcf aa_temp+0,W,ACCESS ; xxRRRxxG
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
355 andlw b'00111001' ; 00RRR00G (don't change C)
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
356 movwf aa_temp+0,ACCESS
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
357 rrcf aa_temp+1,W,ACCESS ; GGGxxBBB
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
358 andlw b'11100111' ; GGG00BBB
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
359 movwf aa_temp+1,ACCESS
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
360
142
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
361 movf aa_temp+1,W,ACCESS ; Add color/4
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
362 addwf PRODL,F ; NOTE: 7/31+15/31=22/31,
142
8b75ba28d641 Screen-flipping custom function.
JeanDo
parents: 123
diff changeset
363 movf aa_temp+0,W,ACCESS ; hence composants won't overlap.
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
364 addwfc PRODH,F ; In right order, to propagate carry.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
365
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
366 aa_decode_12b:
705
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
367 movff win_flags,WREG ; BEWARE: bank0 bit-test
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
368 btfss WREG,1 ; Display1?
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
369 bra aa_decode_3 ; No, Done.
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
370
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
371 ; Convert 16Bit RGB b'RRRRRGGG GGGBBBBB' into 24Bit RGB b'RRRRRR00 GGGGGG00 BBBBBB00'
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
372 ; PRODH PRODL win_color4 win_color5 win_color6
705
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
373 ; Blue
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
374 movff PRODL,win_color6
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
375 bcf STATUS,C
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
376 rlcf win_color6,F ; = UUBBBBB0
705
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
377 bcf STATUS,C
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
378 rlcf win_color6,F ; = UBBBBB00
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
379 bcf STATUS,C
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
380 rlcf win_color6,F ; = BBBBB000
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
381 btfsc win_color6,7
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
382 bsf win_color6,2
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
383
705
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
384 ; Green
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
385 rrcf PRODH,F
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
386 rrcf PRODL,F
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
387 rrcf PRODH,F
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
388 rrcf PRODL,F
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
389 rrcf PRODH,F ; = UUURRRRR
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
390 rrcf PRODL,F ; = GGGGGGUU
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
391 bcf PRODL,1 ; = GGGGGG0U
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
392 bcf PRODL,0 ; = GGGGGG00
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
393 movff PRODL,win_color5
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
394
705
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
395 ; Red
55983c4d6b2d aa fonts processor
heinrichsweikamp
parents: 681
diff changeset
396 bcf STATUS,C
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
397 rlcf PRODH,F ; = UURRRRR0
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
398 bcf STATUS,C
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
399 rlcf PRODH,F ; = URRRRR00
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
400 bcf STATUS,C
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
401 rlcf PRODH,F ; = RRRRR000
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
402 btfsc PRODH,7
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
403 bsf PRODH,2
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
404 movff PRODH,win_color4
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
405 bra aa_decode_3 ; Done.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
406
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
407 ; ---- Simple BLACK and WHITE cases ------------------------------
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
408 aa_decode_13: ; Got a 1xx or a 000 code...
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
409 btfsc win_invert,0 ; Inverse video mode ?
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
410 xorlw 0x80 ; YES: invert levels.
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
411 bn aa_decode_2 ; Then test high bit.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
412
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
413 ; WHITE pixel (ie. full color)
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
414 movff win_color1,PRODH ; current draw color
681
6e456a6398e0 Hardware4 support
heinrichsweikamp
parents: 260
diff changeset
415 movff win_color2,PRODL ; (rem: DISPLAY is big endian)
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
416 bra aa_decode_12b
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
417
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
418 aa_decode_2:
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
419 clrf PRODH,A ; BLACK pixel
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
420 clrf PRODL,A
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
421 clrf win_color4
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
422 clrf win_color5
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
423 clrf win_color6
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
424
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
425 aa_decode_3:
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
426 ;---- PIXEL WRITE LOOP -----------------------------------------------
706
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
427 ; AA_DATA_WRITE_PROD
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
428 bsf DISPLAY_rs ; Data!
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
429
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
430 movff win_flags,WREG ; Display1? win_flags is in bank0...
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
431 btfsc WREG,1 ; Display1?
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
432 bra aa_decode_3_display1 ; Yes.
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
433
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
434 movff PRODH,PORTD ; Move high byte to PORTD (DISPLAY is bigendian)
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
435 bcf DISPLAY_rw
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
436 bsf DISPLAY_rw
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
437 movff PRODL,PORTD ; Move low byte to PORTD
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
438 bra aa_decode_3_done
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
439
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
440 aa_decode_3_display1:
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
441 movff win_color4,PORTD ; Move high byte to PORTD (DISPLAY is bigendian)
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
442 bcf DISPLAY_rw
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
443 bsf DISPLAY_rw
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
444 movff win_color5,PORTD ; Move low byte to PORTD
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
445 bcf DISPLAY_rw
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
446 bsf DISPLAY_rw
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
447 movff win_color6,PORTD ; Move low(est) byte to PORTD
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
448 aa_decode_3_done:
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
449 bcf DISPLAY_rw
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
450 bsf DISPLAY_rw
d68c6a6b1f38 aa fonts processor
heinrichsweikamp
parents: 705
diff changeset
451
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
452 decf aa_bitlen,F,ACCESS
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
453 bnz aa_decode_3
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
454
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
455 ;---- BYTE-CODE LOOP -------------------------------------------------
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
456 ; Are we done ?
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
457 movf TBLPTRL,W,A ; Compare TBLPTR to aa_end
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
458 cpfseq aa_end+0,ACCESS
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
459 bra aa_decode_1 ; Loop if LOW is different
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
460 movf TBLPTRH,W,A
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
461 cpfseq aa_end+1,ACCESS ; Loop to if HIGH is different
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
462 bra aa_decode_1
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
463
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
464 return
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
465
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
466 ;------------------------------------------------------------------------------
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
467 ; Setup pointers for a char:
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
468 ; Inputs : letter : string to print (SHOULD BE NULL TERMINATED)
681
6e456a6398e0 Hardware4 support
heinrichsweikamp
parents: 260
diff changeset
469 ; Output : DISPLAY commands on port D + clocks.
838
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
470
167
cb055a7d75f3 + Use overlay local vars.
JeanDo
parents: 142
diff changeset
471 global aa_wordprocessor ; Callable from C-code.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
472 aa_wordprocessor:
838
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
473 movlw .20
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
474 cpfseq win_leftx2
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
475 bra aa_wordprocessor_no_menu
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
476
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
477 clrf WREG
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
478 movff WREG,letter+.18
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
479
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
480 aa_wordprocessor_no_menu:
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
481 ; Make sure context is well known
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
482 movlb HIGH win_top ; Switch to bank 0...
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
483
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
484 rcall aa_string_width ; Set win_height, compute win_width
838
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
485
2750099bf5bb 3.15 release
heinrichsweikamp
parents: 775
diff changeset
486 movlb HIGH win_top ; Switch to bank 0...
681
6e456a6398e0 Hardware4 support
heinrichsweikamp
parents: 260
diff changeset
487 call DISP_box_write ; Use that for the box.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
488
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
489 ; Restart the loop for each char to print
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
490 lfsr FSR2, letter ; FSR2 pointer to start of string.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
491
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
492 ; DATA bloc commande:
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
493 AA_CMD_WRITE 0x22
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
494
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
495 aa_wordprocessor_1:
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
496 movf POSTINC2,W,A ; WREG = *FSR2++
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
497 bz aa_wordprocessor_99 ; Exit if null byte encountered.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
498
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
499 rcall aa_char_setup ; setup aa_start / aa_end
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
500 rcall aa_decode_char ; write pixels to screen
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
501 bra aa_wordprocessor_1 ; and loop.
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
502
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
503 aa_wordprocessor_99:
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
504 ; END of bloc commande
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
505 AA_CMD_WRITE 0x00
83
3e351e25f5d1 adding anti-aliased fonts frame and merging some patches from Jeando
heinrichsweikamp
parents:
diff changeset
506
123
6a94f96e9cea The big cleanup, again.
JeanDo
parents: 116
diff changeset
507 return