[41] | 1 | ; File name : MenuCharOut.asm |
---|
| 2 | ; Project name : Assembly Library |
---|
| 3 | ; Created date : 15.7.2010 |
---|
[48] | 4 | ; Last update : 8.10.2010 |
---|
[41] | 5 | ; Author : Tomi Tilli |
---|
| 6 | ; Description : Character out function for printing withing menu window. |
---|
| 7 | |
---|
| 8 | ; Section containing code |
---|
| 9 | SECTION .text |
---|
| 10 | |
---|
| 11 | ;-------------------------------------------------------------------- |
---|
| 12 | ; MenuCharOut_MenuBorderTeletypeOutputWithAttribute |
---|
| 13 | ; Parameters: |
---|
| 14 | ; AL: Character to output |
---|
| 15 | ; AH: Attribute to output |
---|
| 16 | ; DS: BDA segment (zero) |
---|
| 17 | ; ES:DI: Ptr to video memory where to output |
---|
| 18 | ; Returns: |
---|
| 19 | ; DI: Incremented for next character |
---|
| 20 | ; Corrupts registers: |
---|
| 21 | ; AX, DX |
---|
| 22 | ;-------------------------------------------------------------------- |
---|
| 23 | ALIGN JUMP_ALIGN |
---|
| 24 | MenuCharOut_MenuBorderTeletypeOutputWithAttribute: |
---|
| 25 | cmp al, CR ; Carriage return? |
---|
| 26 | je SHORT .PrintCRandAdjustColumnToMenuBorders |
---|
| 27 | jmp DisplayCharOut_TeletypeOutputWithAttribute |
---|
| 28 | |
---|
| 29 | ALIGN JUMP_ALIGN |
---|
| 30 | .PrintCRandAdjustColumnToMenuBorders: |
---|
[48] | 31 | call DisplayCharOut_BiosTeletypeOutput |
---|
[41] | 32 | xor ax, ax ; No offset, cursor to start of border |
---|
| 33 | jmp SHORT SetCursorToNextMenuLine |
---|
| 34 | |
---|
| 35 | |
---|
| 36 | ;-------------------------------------------------------------------- |
---|
[48] | 37 | ; MenuCharOut_MenuTextTeletypeOutputWithAttributeAndAutomaticLineChange |
---|
[41] | 38 | ; MenuCharOut_MenuTextTeletypeOutputWithAttribute |
---|
| 39 | ; Parameters: |
---|
| 40 | ; AL: Character to output |
---|
| 41 | ; AH: Attribute to output |
---|
| 42 | ; DS: BDA segment (zero) |
---|
| 43 | ; ES:DI: Ptr to video memory where to output |
---|
| 44 | ; Returns: |
---|
| 45 | ; DI: Incremented for next character |
---|
| 46 | ; Corrupts registers: |
---|
| 47 | ; AX, DX |
---|
| 48 | ;-------------------------------------------------------------------- |
---|
| 49 | ALIGN JUMP_ALIGN |
---|
[48] | 50 | MenuCharOut_MenuTextTeletypeOutputWithAttributeAndAutomaticLineChange: |
---|
| 51 | push di |
---|
| 52 | push ax |
---|
| 53 | mov al, DOUBLE_VERTICAL |
---|
| 54 | add di, BYTE MENU_TEXT_COLUMN_OFFSET ; Border char comes after space |
---|
| 55 | WAIT_RETRACE_IF_NECESSARY_THEN scasb |
---|
| 56 | pop ax |
---|
| 57 | pop di |
---|
| 58 | je SHORT MovePartialWordToNewTextLineAndPrintCharacterFromAX |
---|
| 59 | ; Fall to MenuCharOut_MenuTextTeletypeOutputWithAttribute |
---|
| 60 | |
---|
| 61 | ALIGN JUMP_ALIGN |
---|
[41] | 62 | MenuCharOut_MenuTextTeletypeOutputWithAttribute: |
---|
| 63 | cmp al, CR ; Carriage return? |
---|
[48] | 64 | je SHORT PrintCRfromALandAdjustColumnToMenuText |
---|
[41] | 65 | jmp DisplayCharOut_TeletypeOutputWithAttribute |
---|
| 66 | |
---|
[48] | 67 | |
---|
| 68 | ;-------------------------------------------------------------------- |
---|
| 69 | ; MovePartialWordToNewTextLineAndPrintCharacterFromAX |
---|
| 70 | ; Parameters: |
---|
| 71 | ; AL: Character to output |
---|
| 72 | ; AH: Attribute to output |
---|
| 73 | ; DS: BDA segment (zero) |
---|
| 74 | ; ES:DI: Ptr to end of text line in video memory |
---|
| 75 | ; Returns: |
---|
| 76 | ; DI: Incremented for next character |
---|
| 77 | ; Corrupts registers: |
---|
| 78 | ; AX, DX |
---|
| 79 | ;-------------------------------------------------------------------- |
---|
[41] | 80 | ALIGN JUMP_ALIGN |
---|
[48] | 81 | MovePartialWordToNewTextLineAndPrintCharacterFromAX: |
---|
| 82 | cmp al, ' ' |
---|
| 83 | je SHORT .MoveCursorInDItoBeginningOfNextLine |
---|
| 84 | push si |
---|
| 85 | push cx |
---|
| 86 | push ax |
---|
| 87 | |
---|
| 88 | call .GetOffsetToPartialWordToSIandSizeToCX |
---|
| 89 | call .MoveCursorInDItoBeginningOfNextLine |
---|
| 90 | jcxz .NothingToMove |
---|
| 91 | call .MovePartialWordFromPreviousLineInESSItoNewLineInESDIwithSizeInCX |
---|
| 92 | .NothingToMove: |
---|
| 93 | pop ax |
---|
| 94 | pop cx |
---|
| 95 | pop si |
---|
| 96 | jmp DisplayCharOut_TeletypeOutputWithAttribute |
---|
| 97 | |
---|
| 98 | ;-------------------------------------------------------------------- |
---|
| 99 | ; .GetOffsetToPartialWordToSIandSizeToCX |
---|
| 100 | ; Parameters: |
---|
| 101 | ; ES:DI: Ptr to space before border character |
---|
| 102 | ; Returns: |
---|
| 103 | ; CX: Number of bytes that needs to be moved |
---|
| 104 | ; ES:SI: Ptr to beginning of partial word that needs to be moved to new line |
---|
| 105 | ; Corrupts registers: |
---|
| 106 | ; Nothing |
---|
| 107 | ;-------------------------------------------------------------------- |
---|
| 108 | ALIGN JUMP_ALIGN |
---|
| 109 | .GetOffsetToPartialWordToSIandSizeToCX: |
---|
| 110 | xor cx, cx |
---|
| 111 | mov si, di |
---|
| 112 | ALIGN JUMP_ALIGN |
---|
| 113 | .ScanNextCharacter: ; Space will always be found since one comes after border |
---|
| 114 | dec si |
---|
| 115 | dec si |
---|
| 116 | cmp BYTE [es:si], ' ' |
---|
| 117 | je SHORT .PartialWordFound |
---|
| 118 | inc cx |
---|
| 119 | jmp SHORT .ScanNextCharacter |
---|
| 120 | ALIGN JUMP_ALIGN |
---|
| 121 | .PartialWordFound: |
---|
| 122 | inc si |
---|
| 123 | inc si ; SI now points one past space |
---|
| 124 | shl cx, 1 ; Characters to bytes |
---|
| 125 | ret |
---|
| 126 | |
---|
| 127 | ;-------------------------------------------------------------------- |
---|
| 128 | ; .MovePartialWordFromPreviousLineInESSItoNewLineInESDIwithSizeInCX |
---|
| 129 | ; Parameters: |
---|
| 130 | ; CX: Number of bytes in partial word |
---|
| 131 | ; DS: BDA segment (zero) |
---|
| 132 | ; ES:SI: Ptr to partial word on previous line |
---|
| 133 | ; ES:DI: Ptr to new empty line |
---|
| 134 | ; Returns: |
---|
| 135 | ; ES:DI: Ptr where to store next character |
---|
| 136 | ; Corrupts registers: |
---|
| 137 | ; AX, CX, DX, SI |
---|
| 138 | ;-------------------------------------------------------------------- |
---|
| 139 | ALIGN JUMP_ALIGN |
---|
| 140 | .MovePartialWordFromPreviousLineInESSItoNewLineInESDIwithSizeInCX: |
---|
| 141 | push si |
---|
| 142 | push cx |
---|
| 143 | WAIT_RETRACE_IF_NECESSARY_THEN rep movsb |
---|
| 144 | pop cx |
---|
| 145 | pop si |
---|
| 146 | xchg di, si |
---|
| 147 | shr cx, 1 ; Bytes to characters |
---|
| 148 | mov al, ' ' |
---|
| 149 | call DisplayPrint_RepeatCharacterFromALwithCountInCX |
---|
| 150 | mov di, si |
---|
| 151 | ret |
---|
| 152 | |
---|
| 153 | ;-------------------------------------------------------------------- |
---|
| 154 | ; .MoveCursorInDItoBeginningOfNextLine |
---|
| 155 | ; Parameters: |
---|
| 156 | ; DS: BDA segment (zero) |
---|
| 157 | ; ES:DI: Ptr to cursor location |
---|
| 158 | ; Returns: |
---|
| 159 | ; ES:DI: Ptr to beginning of new line |
---|
| 160 | ; Corrupts registers: |
---|
| 161 | ; AX, DX |
---|
| 162 | ;-------------------------------------------------------------------- |
---|
| 163 | ALIGN JUMP_ALIGN |
---|
| 164 | .MoveCursorInDItoBeginningOfNextLine: |
---|
| 165 | mov al, LF |
---|
| 166 | call DisplayCharOut_BiosTeletypeOutput |
---|
| 167 | mov al, CR |
---|
| 168 | ; Fall to PrintCRfromALandAdjustColumnToMenuText |
---|
| 169 | |
---|
| 170 | |
---|
| 171 | ;-------------------------------------------------------------------- |
---|
| 172 | ; PrintCRfromALandAdjustColumnToMenuText |
---|
| 173 | ; Parameters: |
---|
| 174 | ; AL: Character to output (CR) |
---|
| 175 | ; DS: BDA segment (zero) |
---|
| 176 | ; ES:DI: Ptr to video memory where to output |
---|
| 177 | ; Returns: |
---|
| 178 | ; DI: Incremented for next text line |
---|
| 179 | ; Corrupts registers: |
---|
| 180 | ; AX, DX |
---|
| 181 | ;-------------------------------------------------------------------- |
---|
| 182 | ALIGN JUMP_ALIGN |
---|
| 183 | PrintCRfromALandAdjustColumnToMenuText: |
---|
| 184 | call DisplayCharOut_BiosTeletypeOutput |
---|
[41] | 185 | mov al, MENU_TEXT_COLUMN_OFFSET ; Offset to start of text |
---|
| 186 | ; Fall to SetCursorToNextMenuLine |
---|
| 187 | |
---|
| 188 | ;-------------------------------------------------------------------- |
---|
| 189 | ; SetCursorToNextMenuLine |
---|
| 190 | ; Parameters: |
---|
| 191 | ; AL: Column offset from start of borders |
---|
| 192 | ; DS: BDA segment (zero) |
---|
| 193 | ; ES:DI: Ptr to video memory where to output |
---|
| 194 | ; Returns: |
---|
| 195 | ; DI: Adjusted for next line |
---|
| 196 | ; Corrupts registers: |
---|
| 197 | ; AX, DX |
---|
| 198 | ;-------------------------------------------------------------------- |
---|
| 199 | ALIGN JUMP_ALIGN |
---|
| 200 | SetCursorToNextMenuLine: |
---|
| 201 | push bp |
---|
| 202 | |
---|
| 203 | mov bp, [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.wCharOutParam] |
---|
| 204 | call .AddCoordinatesForNewBorderLineToAX |
---|
| 205 | call DisplayCursor_SetCoordinatesFromAX ; Updates DI |
---|
| 206 | |
---|
| 207 | pop bp |
---|
| 208 | ret |
---|
| 209 | |
---|
| 210 | ;-------------------------------------------------------------------- |
---|
| 211 | ; .AddCoordinatesForNewBorderLineToAX |
---|
| 212 | ; Parameters: |
---|
| 213 | ; AL: Column offset from start of borders |
---|
| 214 | ; DS: BDA segment (zero) |
---|
| 215 | ; SS:BP: Ptr to MENU |
---|
| 216 | ; Returns: |
---|
| 217 | ; AX: Coordinates for new line |
---|
| 218 | ; Corrupts registers: |
---|
| 219 | ; DX |
---|
| 220 | ;-------------------------------------------------------------------- |
---|
| 221 | ALIGN JUMP_ALIGN |
---|
| 222 | .AddCoordinatesForNewBorderLineToAX: |
---|
| 223 | call MenuLocation_AddTitleBordersTopLeftCoordinatesToAX |
---|
| 224 | push ax |
---|
| 225 | call DisplayCursor_GetSoftwareCoordinatesToAX |
---|
| 226 | pop dx |
---|
| 227 | mov al, dl ; Adjust column to borders |
---|
| 228 | ret |
---|