Mercurial > public > mk2
annotate code_part1/OSTC_code_asm_part1/displaytext.asm @ 840:b29cf452f91d
minor
| author | heinrichsweikamp |
|---|---|
| date | Wed, 18 Oct 2023 19:54:09 +0200 |
| parents | 2750099bf5bb |
| children |
| rev | line source |
|---|---|
| 815 | 1 ; OSTC Mk.2, 2N and 2C - diving computer code |
|
807
c50296c3059e
BUGFIX: Divetime had unwanted "." behind the minutes
heinrichsweikamp
parents:
174
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changeset
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2 ; Copyright (C) 2015 HeinrichsWeikamp GbR |
| 0 | 3 |
| 4 ; This program is free software: you can redistribute it and/or modify | |
| 5 ; it under the terms of the GNU General Public License as published by | |
| 6 ; the Free Software Foundation, either version 3 of the License, or | |
| 7 ; (at your option) any later version. | |
| 8 | |
| 9 ; This program is distributed in the hope that it will be useful, | |
| 10 ; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 ; GNU General Public License for more details. | |
| 13 | |
| 14 ; You should have received a copy of the GNU General Public License | |
| 15 ; along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 16 | |
| 17 | |
| 18 ; Displays from text_table_vx.asm | |
| 19 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com | |
| 20 ; written: 10/30/05 | |
| 51 | 21 ; last updated: 100730 |
| 0 | 22 ; known bugs: |
| 23 ; ToDo: | |
| 24 | |
| 25 | |
| 26 ; These macros output to POSTINC only | |
| 174 | 27 OUTPUTTEXT macro n ; For Texts 1-255 |
| 28 If n>.255 | |
| 29 Error "Bad low text number", n | |
| 30 Endif | |
| 31 movlw n | |
| 32 call displaytext0_low | |
| 0 | 33 endm |
| 34 | |
| 174 | 35 OUTPUTTEXTH macro n ; For Texts 256-511 |
| 36 If n<.256 | |
| 37 Error "Bad low text number", n | |
| 38 Endif | |
| 39 movlw n-.256 ; Use only Lower 8 Bit | |
| 40 call displaytext0_high | |
| 0 | 41 endm |
| 42 | |
| 174 | 43 displaytext0_high: |
| 44 bsf displaytext_high ; Highbit set | |
| 45 bra displaytext0 | |
| 0 | 46 |
| 174 | 47 displaytext0_low: |
| 48 bcf displaytext_high ; Highbit clear | |
| 0 | 49 displaytext0: |
| 174 | 50 bsf output_to_postinc_only |
| 51 bra displaytext | |
| 0 | 52 |
| 174 | 53 ; These macros output to letter[], and call the wordprocessor |
| 54 DISPLAYTEXT macro n | |
| 55 movlw n | |
| 56 call displaytext_1_low | |
| 0 | 57 endm |
| 58 | |
| 174 | 59 DISPLAYTEXTH macro n |
| 60 movlw LOW n ; Use only Lower 8 Bit | |
| 61 call displaytext_1_high | |
| 0 | 62 endm |
| 63 | |
| 174 | 64 displaytext_1_high: |
| 65 bsf displaytext_high ; Highbit set | |
| 66 bra displaytext | |
| 0 | 67 |
| 174 | 68 displaytext_1_low: |
| 69 bcf displaytext_high | |
| 0 | 70 |
| 174 | 71 displaytext: |
| 72 movwf textnumber | |
| 73 movlw LOW(text_pointer-4) | |
| 74 movwf TBLPTRL | |
| 75 movlw HIGH(text_pointer-4) | |
| 76 movwf TBLPTRH | |
| 77 movlw UPPER(text_pointer-4) | |
| 78 movwf TBLPTRU | |
| 51 | 79 |
| 838 | 80 clrf letter_counter ; reset the letter counter |
| 174 | 81 movlw 4 ; textnumber * 4 --> PROD |
| 82 mulwf textnumber | |
| 83 | |
| 84 btfsc displaytext_high ; If high text, add 4*256 to PROD | |
| 85 addwf PRODH | |
| 51 | 86 |
| 174 | 87 movf PRODL,W ; Add PROD to TBLPTR |
| 88 addwf TBLPTRL,F | |
| 89 movf PRODH,W | |
| 90 addwfc TBLPTRH,F | |
| 91 movlw 0 | |
| 92 addwfc TBLPTRU | |
| 0 | 93 |
| 94 TBLRD*+ | |
| 174 | 95 movff TABLAT,textaddress+0 ; textaddress:2 holds address for first character |
| 96 TBLRD*+ | |
| 97 movff TABLAT,textaddress+1 | |
| 98 | |
| 99 btfsc output_to_postinc_only ; output to postinc only? | |
| 100 bra displaytext2 | |
| 101 | |
| 102 TBLRD*+ | |
| 51 | 103 movff TABLAT,win_leftx2 ; No, write coordinates |
| 0 | 104 |
| 105 TBLRD*+ | |
| 174 | 106 movff TABLAT,win_top ; No, write coordinates |
| 0 | 107 |
| 174 | 108 displaytext2: |
| 109 clrf WREG ; Reset to small font | |
| 110 movff WREG,win_font ; (BANK 0) | |
| 0 | 111 |
| 174 | 112 movff textaddress+0,TBLPTRL |
| 113 movff textaddress+1,TBLPTRH | |
| 51 | 114 btfss output_to_postinc_only ; output to postinc2 only? |
| 0 | 115 lfsr FSR2,letter ; no! |
| 116 | |
| 174 | 117 displaytext3: |
| 0 | 118 TBLRD*+ |
| 174 | 119 movf TABLAT,W |
| 120 bz display_text_exit ; Text finished? | |
| 121 movwf POSTINC2 | |
| 838 | 122 incf letter_counter,F ; ++1 |
| 174 | 123 bra displaytext3 |
| 0 | 124 |
| 125 display_text_exit: | |
| 126 btfss output_to_postinc_only ; output to postinc only? | |
| 815 | 127 bra display_text_exit2 |
| 174 | 128 |
| 129 bcf output_to_postinc_only | |
| 0 | 130 return |
| 815 | 131 |
| 132 display_text_exit2: | |
| 133 clrf WREG | |
| 134 movff WREG,letter+.22 | |
| 135 goto word_processor |