[41] | 1 | ; Project name : Assembly Library |
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| 2 | ; Description : Functions for display output. |
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| 3 | |
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[376] | 4 | ; |
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[491] | 5 | ; XTIDE Universal BIOS and Associated Tools |
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[526] | 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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[376] | 7 | ; |
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| 8 | ; This program is free software; you can redistribute it and/or modify |
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| 9 | ; it under the terms of the GNU General Public License as published by |
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| 10 | ; the Free Software Foundation; either version 2 of the License, or |
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| 11 | ; (at your option) any later version. |
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[491] | 12 | ; |
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[376] | 13 | ; This program is distributed in the hope that it will be useful, |
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| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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[491] | 16 | ; GNU General Public License for more details. |
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[376] | 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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[491] | 18 | ; |
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[376] | 19 | |
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[41] | 20 | ; Section containing code |
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| 21 | SECTION .text |
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| 22 | |
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[376] | 23 | |
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[41] | 24 | ;-------------------------------------------------------------------- |
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| 25 | ; Supports following formatting types: |
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| 26 | ; %a Specifies attribute for next character |
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| 27 | ; %A Specifies attribute for remaining string (or until next %A) |
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| 28 | ; %d Prints signed 16-bit decimal integer |
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| 29 | ; %u Prints unsigned 16-bit decimal integer |
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| 30 | ; %x Prints 16-bit hexadecimal integer |
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| 31 | ; %s Prints string (from CS segment) |
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| 32 | ; %S Prints string (far pointer) |
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| 33 | ; %c Prints character |
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| 34 | ; %t Prints character number of times (character needs to be pushed first, then repeat times) |
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| 35 | ; %% Prints '%' character (no parameter pushed) |
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| 36 | ; |
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| 37 | ; Any placeholder can be set to minimum length by specifying |
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| 38 | ; minimum number of characters. For example %8d would append spaces |
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| 39 | ; after integer so that at least 8 characters would be printed. |
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[48] | 40 | ; |
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| 41 | ; When placing '-' after number, then spaces will be used for prepending. |
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| 42 | ; For example %8-d would prepend integer with spaces so that at least |
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| 43 | ; 8 characters would be printed. |
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[162] | 44 | ; |
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[41] | 45 | ; DisplayPrint_FormattedNullTerminatedStringFromCSSI |
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| 46 | ; Parameters: |
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| 47 | ; BP: SP before pushing parameters |
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| 48 | ; DS: BDA segment (zero) |
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| 49 | ; CS:SI: Pointer to string to format |
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| 50 | ; ES:DI: Ptr to cursor location in video RAM |
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| 51 | ; Stack: Parameters for formatting placeholders. |
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| 52 | ; Parameter for first placeholder must be pushed first. |
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| 53 | ; Low word must pushed first for placeholders requiring |
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| 54 | ; 32-bit parameters (two words). |
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| 55 | ; Returns: |
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| 56 | ; DI: Updated offset to video RAM |
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| 57 | ; Corrupts registers: |
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| 58 | ; AX, DX |
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| 59 | ;-------------------------------------------------------------------- |
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[369] | 60 | ALIGN DISPLAY_JUMP_ALIGN |
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[41] | 61 | DisplayPrint_FormattedNullTerminatedStringFromCSSI: |
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| 62 | push bp |
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| 63 | push si |
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| 64 | push cx |
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| 65 | push bx |
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| 66 | push WORD [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.bAttribute] |
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| 67 | |
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| 68 | dec bp ; Point BP to... |
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| 69 | dec bp ; ...first stack parameter |
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| 70 | call DisplayFormat_ParseCharacters |
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| 71 | |
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| 72 | ; Pop original character attribute |
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| 73 | pop ax |
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| 74 | mov [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.bAttribute], al |
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| 75 | |
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| 76 | pop bx |
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| 77 | pop cx |
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| 78 | pop si |
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| 79 | pop bp |
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[376] | 80 | |
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[41] | 81 | ret |
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| 82 | |
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| 83 | |
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| 84 | ;-------------------------------------------------------------------- |
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[44] | 85 | ; DisplayPrint_SignedWordFromAXWithBaseInBX |
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[41] | 86 | ; Parameters: |
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| 87 | ; AX: Word to display |
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[44] | 88 | ; BX: Integer base (binary=2, octal=8, decimal=10, hexadecimal=16) |
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[41] | 89 | ; DS: BDA segment (zero) |
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| 90 | ; ES:DI: Ptr to cursor location in video RAM |
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| 91 | ; Returns: |
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| 92 | ; DI: Updated offset to video RAM |
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| 93 | ; Corrupts registers: |
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| 94 | ; AX, DX |
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| 95 | ;-------------------------------------------------------------------- |
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[134] | 96 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 97 | ALIGN DISPLAY_JUMP_ALIGN |
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[44] | 98 | DisplayPrint_SignedWordFromAXWithBaseInBX: |
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| 99 | test ax, ax |
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| 100 | jns SHORT DisplayPrint_WordFromAXWithBaseInBX |
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[41] | 101 | |
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| 102 | push ax |
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| 103 | mov al, '-' |
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| 104 | call DisplayPrint_CharacterFromAL |
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| 105 | pop ax |
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| 106 | neg ax |
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[44] | 107 | ; Fall to DisplayPrint_WordFromAXWithBaseInBX |
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[134] | 108 | %endif |
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[41] | 109 | |
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[376] | 110 | |
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[41] | 111 | ;-------------------------------------------------------------------- |
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| 112 | ; DisplayPrint_WordFromAXWithBaseInBX |
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| 113 | ; Parameters: |
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| 114 | ; AX: Word to display |
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| 115 | ; BX: Integer base (binary=2, octal=8, decimal=10, hexadecimal=16) |
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| 116 | ; DS: BDA segment (zero) |
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| 117 | ; ES:DI: Ptr to cursor location in video RAM |
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| 118 | ; Returns: |
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| 119 | ; DI: Updated offset to video RAM |
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| 120 | ; Corrupts registers: |
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| 121 | ; AX, DX |
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[376] | 122 | ;-------------------------------------------------------------------- |
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[491] | 123 | %ifndef MODULE_STRINGS_COMPRESSED |
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[369] | 124 | ALIGN DISPLAY_JUMP_ALIGN |
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[41] | 125 | DisplayPrint_WordFromAXWithBaseInBX: |
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| 126 | push cx |
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| 127 | |
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| 128 | xor cx, cx |
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[369] | 129 | ALIGN DISPLAY_JUMP_ALIGN |
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[41] | 130 | .DivideLoop: |
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[580] | 131 | inc cx ; Increment character count |
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[41] | 132 | xor dx, dx ; DX:AX now holds the integer |
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| 133 | div bx ; Divide DX:AX by base |
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| 134 | push dx ; Push remainder |
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| 135 | test ax, ax ; All divided? |
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| 136 | jnz SHORT .DivideLoop ; If not, loop |
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[44] | 137 | |
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[580] | 138 | ALIGN DISPLAY_JUMP_ALIGN |
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[532] | 139 | PrintAllPushedDigits: ; Unused entrypoint OK |
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[44] | 140 | .PrintNextDigit: |
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| 141 | pop ax ; Pop digit |
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[580] | 142 | cmp al, 10 ; Convert binary digit in AL to ASCII hex digit ('0'-'9' or 'A'-'F') |
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| 143 | sbb al, 69h |
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| 144 | das |
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[41] | 145 | call DisplayPrint_CharacterFromAL |
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[44] | 146 | loop .PrintNextDigit |
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[41] | 147 | |
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| 148 | pop cx |
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| 149 | ret |
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[580] | 150 | %endif ; ~MODULE_STRINGS_COMPRESSED |
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[341] | 151 | |
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| 152 | ;-------------------------------------------------------------------- |
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| 153 | ; DisplayPrint_QWordFromSSBPwithBaseInBX |
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| 154 | ; Parameters: |
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| 155 | ; SS:BP: QWord to display |
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| 156 | ; BX: Integer base (binary=2, octal=8, decimal=10, hexadecimal=16) |
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| 157 | ; DS: BDA segment (zero) |
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| 158 | ; ES:DI: Ptr to cursor location in video RAM |
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| 159 | ; Returns: |
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| 160 | ; DI: Updated offset to video RAM |
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| 161 | ; Corrupts registers: |
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| 162 | ; AX, DX, [SS:BP] |
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| 163 | ;-------------------------------------------------------------------- |
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[491] | 164 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS OR EXCLUDE_FROM_XTIDECFG |
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[369] | 165 | ALIGN DISPLAY_JUMP_ALIGN |
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[341] | 166 | DisplayPrint_QWordFromSSBPwithBaseInBX: |
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| 167 | push cx |
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| 168 | |
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| 169 | mov cx, bx ; CX = Integer base |
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| 170 | xor bx, bx ; BX = Character count |
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[369] | 171 | ALIGN DISPLAY_JUMP_ALIGN |
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[341] | 172 | .DivideLoop: |
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| 173 | call Math_DivQWatSSBPbyCX; Divide by base |
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| 174 | push dx ; Push remainder |
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| 175 | inc bx ; Increment character count |
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| 176 | cmp WORD [bp], BYTE 0 ; All divided? |
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| 177 | jne SHORT .DivideLoop ; If not, loop |
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[580] | 178 | xchg cx, bx ; Character count to CX, Integer base to BX |
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[341] | 179 | jmp SHORT PrintAllPushedDigits |
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[491] | 180 | %endif |
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[41] | 181 | |
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| 182 | |
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| 183 | ;-------------------------------------------------------------------- |
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| 184 | ; DisplayPrint_CharacterBufferFromBXSIwithLengthInCX |
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| 185 | ; Parameters: |
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| 186 | ; CX: Buffer length (characters) |
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| 187 | ; BX:SI: Ptr to NULL terminated string |
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| 188 | ; DS: BDA segment (zero) |
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| 189 | ; ES:DI: Ptr to cursor location in video RAM |
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| 190 | ; Returns: |
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| 191 | ; DI: Updated offset to video RAM |
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| 192 | ; Corrupts registers: |
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| 193 | ; AX, DX |
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| 194 | ;-------------------------------------------------------------------- |
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[223] | 195 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 196 | ALIGN DISPLAY_JUMP_ALIGN |
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[41] | 197 | DisplayPrint_CharacterBufferFromBXSIwithLengthInCX: |
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[44] | 198 | jcxz .NothingToPrintSinceZeroLength |
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| 199 | push si |
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[41] | 200 | push cx |
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| 201 | |
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[369] | 202 | ALIGN DISPLAY_JUMP_ALIGN |
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[44] | 203 | .PrintNextCharacter: |
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| 204 | mov ds, bx |
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| 205 | lodsb |
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| 206 | LOAD_BDA_SEGMENT_TO ds, dx |
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| 207 | call DisplayPrint_CharacterFromAL |
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| 208 | loop .PrintNextCharacter |
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| 209 | |
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[41] | 210 | pop cx |
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[44] | 211 | pop si |
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| 212 | .NothingToPrintSinceZeroLength: |
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[41] | 213 | ret |
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[376] | 214 | %endif |
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[41] | 215 | |
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[376] | 216 | |
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[41] | 217 | ;-------------------------------------------------------------------- |
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[67] | 218 | ; DisplayPrint_ClearScreenWithCharInALandAttributeInAH |
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[41] | 219 | ; Parameters: |
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[67] | 220 | ; AL: Character to clear with |
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| 221 | ; AH: Attribute to clear with |
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[41] | 222 | ; DS: BDA segment (zero) |
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| 223 | ; ES:DI: Ptr to cursor location in video RAM |
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| 224 | ; Returns: |
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| 225 | ; Nothing |
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| 226 | ; Corrupts registers: |
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| 227 | ; AX, DX |
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| 228 | ;-------------------------------------------------------------------- |
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[491] | 229 | %ifdef INCLUDE_MENU_LIBRARY |
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[369] | 230 | ALIGN DISPLAY_JUMP_ALIGN |
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[67] | 231 | DisplayPrint_ClearScreenWithCharInALandAttributeInAH: |
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[41] | 232 | push di |
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[67] | 233 | push cx |
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| 234 | |
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| 235 | xchg cx, ax |
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[41] | 236 | xor ax, ax |
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[67] | 237 | call DisplayCursor_SetCoordinatesFromAX ; Updates DI |
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[41] | 238 | call DisplayPage_GetColumnsToALandRowsToAH |
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[67] | 239 | mul ah ; AX = AL*AH = Characters on screen |
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| 240 | xchg cx, ax ; AX = Char+Attr, CX = WORDs to store |
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| 241 | rep stosw |
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| 242 | |
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| 243 | pop cx |
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[41] | 244 | pop di |
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| 245 | mov [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.fpCursorPosition], di |
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| 246 | ret |
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[489] | 247 | %endif |
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[491] | 248 | |
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| 249 | |
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[41] | 250 | ;-------------------------------------------------------------------- |
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| 251 | ; DisplayPrint_ClearAreaWithHeightInAHandWidthInAL |
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| 252 | ; Parameters: |
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| 253 | ; AH: Area height |
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| 254 | ; AL: Area width |
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| 255 | ; DS: BDA segment (zero) |
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| 256 | ; ES:DI: Ptr to cursor location in video RAM |
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| 257 | ; Returns: |
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[42] | 258 | ; DI: Updated offset to video RAM |
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[41] | 259 | ; Corrupts registers: |
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| 260 | ; AX, DX |
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| 261 | ;-------------------------------------------------------------------- |
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[134] | 262 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 263 | ALIGN DISPLAY_JUMP_ALIGN |
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[41] | 264 | DisplayPrint_ClearAreaWithHeightInAHandWidthInAL: |
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[42] | 265 | push si |
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[41] | 266 | push cx |
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| 267 | push bx |
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| 268 | |
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[42] | 269 | xchg bx, ax ; Area size to BX |
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[41] | 270 | call DisplayCursor_GetSoftwareCoordinatesToAX |
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[42] | 271 | xchg si, ax ; Software (Y,X) coordinates now in SI |
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| 272 | xor cx, cx |
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[41] | 273 | |
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[369] | 274 | ALIGN DISPLAY_JUMP_ALIGN |
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[42] | 275 | .ClearRowLoop: |
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| 276 | mov cl, bl ; Area width now in CX |
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[44] | 277 | mov al, SCREEN_BACKGROUND_CHARACTER |
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[42] | 278 | call DisplayPrint_RepeatCharacterFromALwithCountInCX |
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[41] | 279 | |
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[42] | 280 | xchg ax, si ; Coordinates to AX |
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| 281 | inc ah ; Increment row |
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| 282 | mov si, ax |
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[41] | 283 | call DisplayCursor_SetCoordinatesFromAX |
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[42] | 284 | dec bh ; Decrement rows left |
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| 285 | jnz SHORT .ClearRowLoop |
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[41] | 286 | |
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| 287 | pop bx |
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| 288 | pop cx |
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[42] | 289 | pop si |
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[41] | 290 | ret |
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[134] | 291 | %endif |
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[42] | 292 | |
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[492] | 293 | %ifdef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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| 294 | %define EXCLUDE |
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[532] | 295 | %ifndef MODULE_STRINGS_COMPRESSED |
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| 296 | %undef EXCLUDE |
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| 297 | %endif |
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[589] | 298 | %ifdef MODULE_HOTKEYS OR MODULE_BOOT_MENU |
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[492] | 299 | %undef EXCLUDE |
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| 300 | %endif |
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| 301 | %endif |
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[42] | 302 | |
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[505] | 303 | %ifndef EXCLUDE |
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[42] | 304 | ;-------------------------------------------------------------------- |
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| 305 | ; DisplayPrint_RepeatCharacterFromALwithCountInCX |
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| 306 | ; Parameters: |
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| 307 | ; AL: Character to display |
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| 308 | ; CX: Repeat count |
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| 309 | ; DS: BDA segment (zero) |
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| 310 | ; ES:DI: Ptr to cursor location in video RAM |
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| 311 | ; Returns: |
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| 312 | ; DI: Updated offset to video RAM |
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| 313 | ; Corrupts registers: |
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[181] | 314 | ; DX |
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[42] | 315 | ;-------------------------------------------------------------------- |
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[369] | 316 | ALIGN DISPLAY_JUMP_ALIGN |
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[42] | 317 | DisplayPrint_RepeatCharacterFromALwithCountInCX: |
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[44] | 318 | jcxz .NothingToRepeat |
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| 319 | push cx |
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| 320 | |
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[369] | 321 | ALIGN DISPLAY_JUMP_ALIGN |
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[44] | 322 | .RepeatCharacter: |
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[42] | 323 | push ax |
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| 324 | call DisplayPrint_CharacterFromAL |
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| 325 | pop ax |
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[44] | 326 | loop .RepeatCharacter |
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| 327 | |
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| 328 | pop cx |
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| 329 | .NothingToRepeat: |
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[42] | 330 | ret |
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[492] | 331 | %endif |
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| 332 | %undef EXCLUDE |
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[223] | 333 | |
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[186] | 334 | ;-------------------------------------------------------------------- |
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| 335 | ; DisplayPrint_NullTerminatedStringFromCSSI |
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| 336 | ; Parameters: |
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| 337 | ; CS:SI: Ptr to NULL terminated string |
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| 338 | ; DS: BDA segment (zero) |
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| 339 | ; ES:DI: Ptr to cursor location in video RAM |
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| 340 | ; Returns: |
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| 341 | ; DI: Updated offset to video RAM |
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| 342 | ; Corrupts registers: |
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| 343 | ; AX, DX |
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| 344 | ;-------------------------------------------------------------------- |
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[376] | 345 | %ifndef MODULE_STRINGS_COMPRESSED |
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| 346 | ;;; |
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| 347 | ;;; Take care when using this routine with compressed strings (which is why it is disabled). |
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| 348 | ;;; All strings in CSSI should go through the DisplayFormatCompressed code to be decoded. |
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| 349 | ;;; |
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[369] | 350 | ALIGN DISPLAY_JUMP_ALIGN |
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[186] | 351 | DisplayPrint_NullTerminatedStringFromCSSI: |
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| 352 | push bx |
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| 353 | mov bx, cs |
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| 354 | call DisplayPrint_NullTerminatedStringFromBXSI |
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| 355 | pop bx |
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| 356 | ret |
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[376] | 357 | %endif |
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[42] | 358 | |
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| 359 | |
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[376] | 360 | ;;; |
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| 361 | ;;; Note that the following routines need to be at the bottom of this file |
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| 362 | ;;; to accomodate short jumps from the next file (DisplayFormat/DisplayFormatCompressed) |
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| 363 | ;;; |
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| 364 | |
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[42] | 365 | ;-------------------------------------------------------------------- |
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[44] | 366 | ; DisplayPrint_Newline |
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| 367 | ; Parameters: |
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| 368 | ; DS: BDA segment (zero) |
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| 369 | ; ES:DI: Ptr to cursor location in video RAM |
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| 370 | ; Returns: |
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| 371 | ; DI: Updated offset to video RAM |
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| 372 | ; Corrupts registers: |
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| 373 | ; AX, DX |
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| 374 | ;-------------------------------------------------------------------- |
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[376] | 375 | %ifdef MODULE_STRINGS_COMPRESSED |
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[369] | 376 | ALIGN DISPLAY_JUMP_ALIGN |
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[376] | 377 | DisplayPrint_Newline_FormatAdjustBP: |
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| 378 | inc bp ; we didn't need a parameter after all, readjust BP |
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| 379 | inc bp |
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| 380 | ; fall through to DisplayPrint_Newline |
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| 381 | %endif |
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| 382 | |
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[369] | 383 | ALIGN DISPLAY_JUMP_ALIGN |
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[44] | 384 | DisplayPrint_Newline: |
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[52] | 385 | mov al, LF |
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| 386 | call DisplayPrint_CharacterFromAL |
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[44] | 387 | mov al, CR |
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| 388 | ; Fall to DisplayPrint_CharacterFromAL |
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| 389 | |
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| 390 | ;-------------------------------------------------------------------- |
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[42] | 391 | ; DisplayPrint_CharacterFromAL |
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| 392 | ; Parameters: |
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| 393 | ; AL: Character to display |
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[567] | 394 | ; Zero value is ignored (no character is printed) |
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[42] | 395 | ; DS: BDA segment (zero) |
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| 396 | ; ES:DI: Ptr to cursor location in video RAM |
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| 397 | ; Returns: |
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| 398 | ; DI: Updated offset to video RAM |
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| 399 | ; Corrupts registers: |
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| 400 | ; AX, DX |
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| 401 | ;-------------------------------------------------------------------- |
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[369] | 402 | ALIGN DISPLAY_JUMP_ALIGN |
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[42] | 403 | DisplayPrint_CharacterFromAL: |
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[505] | 404 | test al, al |
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[376] | 405 | jz DisplayPrint_Ret |
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| 406 | |
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[42] | 407 | mov ah, [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.bAttribute] |
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| 408 | jmp [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.fnCharOut] |
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[223] | 409 | |
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[376] | 410 | |
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[186] | 411 | ;-------------------------------------------------------------------- |
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| 412 | ; DisplayPrint_NullTerminatedStringFromBXSI |
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| 413 | ; Parameters: |
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| 414 | ; DS: BDA segment (zero) |
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| 415 | ; BX:SI: Ptr to NULL terminated string |
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| 416 | ; ES:DI: Ptr to cursor location in video RAM |
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| 417 | ; Returns: |
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| 418 | ; DI: Updated offset to video RAM |
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| 419 | ; Corrupts registers: |
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| 420 | ; AX, DX |
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| 421 | ;-------------------------------------------------------------------- |
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[369] | 422 | ALIGN DISPLAY_JUMP_ALIGN |
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[186] | 423 | DisplayPrint_NullTerminatedStringFromBXSI: |
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| 424 | push si |
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| 425 | push cx |
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| 426 | |
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| 427 | xor cx, cx |
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[369] | 428 | ALIGN DISPLAY_JUMP_ALIGN |
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[186] | 429 | .PrintNextCharacter: |
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| 430 | mov ds, bx ; String segment to DS |
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| 431 | lodsb |
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| 432 | mov ds, cx ; BDA segment to DS |
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| 433 | test al, al ; NULL? |
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| 434 | jz SHORT .EndOfString |
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| 435 | call DisplayPrint_CharacterFromAL |
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| 436 | jmp SHORT .PrintNextCharacter |
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| 437 | |
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[369] | 438 | ALIGN DISPLAY_JUMP_ALIGN |
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[186] | 439 | .EndOfString: |
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| 440 | pop cx |
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| 441 | pop si |
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[376] | 442 | |
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| 443 | DisplayPrint_Ret: ; random ret to jump to |
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[186] | 444 | ret |
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| 445 | |
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