| 1 | ; Project name : AssemblyLibrary
|
|---|
| 2 | ; Description : Defines for display library.
|
|---|
| 3 | %ifndef DISPLAY_INC
|
|---|
| 4 | %define DISPLAY_INC
|
|---|
| 5 |
|
|---|
| 6 | ;--------------------------------------------------------------------
|
|---|
| 7 | ; Display Library users need to use this macro since it will provide
|
|---|
| 8 | ; compatibility with future library versions.
|
|---|
| 9 | ;
|
|---|
| 10 | ; CALL_DISPLAY_LIBRARY
|
|---|
| 11 | ; Parameters:
|
|---|
| 12 | ; %1: Function to call (functionName from DISPLAY_LIB)
|
|---|
| 13 | ; Registers: Depends on function to call
|
|---|
| 14 | ; Returns:
|
|---|
| 15 | ; Depends on function to call
|
|---|
| 16 | ; Corrupts registers:
|
|---|
| 17 | ; AX (unless used as a return register), DI
|
|---|
| 18 | ;--------------------------------------------------------------------
|
|---|
| 19 | %macro CALL_DISPLAY_LIBRARY 1
|
|---|
| 20 | %ifidn %1, PushDisplayContext
|
|---|
| 21 | call DisplayContext_Push
|
|---|
| 22 | %elifidn %1, PopDisplayContext
|
|---|
| 23 | call DisplayContext_Pop
|
|---|
| 24 | %elifidn %1, PrepareOffScreenBufferInESBXwithLengthInCX
|
|---|
| 25 | call DisplayContext_PrepareOffScreenBufferInESBXwithLengthInCX
|
|---|
| 26 | %else
|
|---|
| 27 | mov di, DISPLAY_LIB.%1
|
|---|
| 28 | call Display_FunctionFromDI
|
|---|
| 29 | %endif
|
|---|
| 30 | %endmacro
|
|---|
| 31 |
|
|---|
| 32 |
|
|---|
| 33 | ; Display library functions
|
|---|
| 34 | struc DISPLAY_LIB
|
|---|
| 35 | .PushDisplayContext:
|
|---|
| 36 | .PopDisplayContext:
|
|---|
| 37 | .InitializeDisplayContext resb 2
|
|---|
| 38 |
|
|---|
| 39 | .SetCharacterPointerFromBXAX resb 2
|
|---|
| 40 | .SetCharOutputFunctionFromAXwithAttribFlagInBL resb 2
|
|---|
| 41 | .SetCharacterOutputParameterFromAX resb 2
|
|---|
| 42 | .SetCharacterAttributeFromAL resb 2
|
|---|
| 43 | .SetCursorShapeFromAX resb 2
|
|---|
| 44 | .SetCursorCoordinatesFromAX resb 2
|
|---|
| 45 | .SetNewPageFromAL resb 2
|
|---|
| 46 | .SynchronizeDisplayContextToHardware resb 2
|
|---|
| 47 |
|
|---|
| 48 | .GetCharacterPointerToBXAX resb 2
|
|---|
| 49 | .GetSoftwareCoordinatesToAX resb 2
|
|---|
| 50 | .GetColumnsToALandRowsToAH resb 2
|
|---|
| 51 |
|
|---|
| 52 | .FormatNullTerminatedStringFromCSSI resb 2
|
|---|
| 53 | .PrintSignedWordFromAXWithBaseInBX resb 2
|
|---|
| 54 | .PrintWordFromAXwithBaseInBX resb 2
|
|---|
| 55 | .PrintCharBufferFromBXSIwithLengthInCX resb 2
|
|---|
| 56 | .PrintNullTerminatedStringFromBXSI resb 2
|
|---|
| 57 | .PrintNullTerminatedStringFromCSSI resb 2
|
|---|
| 58 | .PrintRepeatedCharacterFromALwithCountInCX resb 2
|
|---|
| 59 | .PrintCharacterFromAL resb 2
|
|---|
| 60 | .PrintNewlineCharacters resb 2
|
|---|
| 61 | .ClearAreaWithHeightInAHandWidthInAL resb 2
|
|---|
| 62 | .ClearScreenWithCharInALandAttrInAH resb 2
|
|---|
| 63 | endstruc
|
|---|
| 64 |
|
|---|
| 65 | ; Attribute flags for DISPLAY_LIB.SetCharacterOutputFunctionFromAXwithAttributeFlagInDL
|
|---|
| 66 | ATTRIBUTES_NOT_USED EQU 0
|
|---|
| 67 | ATTRIBUTES_ARE_USED EQU FLG_CONTEXT_ATTRIBUTES
|
|---|
| 68 |
|
|---|
| 69 | ; Character output functions for DISPLAY_LIB.SetCharacterOutputFunctionFromAXwithAttributeFlagInDL
|
|---|
| 70 | TELETYPE_OUTPUT_WITH_ATTRIBUTE EQU DisplayCharOut_TeletypeOutputWithAttribute
|
|---|
| 71 | TELETYPE_OUTPUT_WITHOUT_ATTRIBUTE EQU DisplayCharOut_TeletypeOutput
|
|---|
| 72 | TELETYPE_OUTPUT_USING_BIOS EQU DisplayCharOut_BiosTeletypeOutput
|
|---|
| 73 | FAST_OUTPUT_WITH_ATTRIBUTE_ONLY EQU DisplayCharOut_Attribute
|
|---|
| 74 | FAST_OUTPUT_WITH_CHAR_ONLY EQU DisplayCharOut_Character
|
|---|
| 75 | FAST_OUTPUT_WITH_CHAR_AND_ATTRIBUTE EQU DisplayCharOut_CharacterWithAttribute
|
|---|
| 76 | BUFFER_OUTPUT_WITH_CHAR_ONLY EQU DisplayCharOut_WriteCharacterToBuffer
|
|---|
| 77 |
|
|---|
| 78 | DEFAULT_CHARACTER_OUTPUT EQU TELETYPE_OUTPUT_WITH_ATTRIBUTE
|
|---|
| 79 |
|
|---|
| 80 |
|
|---|
| 81 | struc VIDEO_BDA
|
|---|
| 82 | resb 449h
|
|---|
| 83 | .bMode resb 1 ; 0:449h, Video, Mode
|
|---|
| 84 | .wColumns resb 2 ; 0:44Ah, Video, Number of columns
|
|---|
| 85 | .wBytesPerPage resb 2 ; 0:44Ch, Video, Total number of bytes per page
|
|---|
| 86 | .wPageOffset resb 2 ; 0:44Eh, Video, Current page offset
|
|---|
| 87 | .rgwCursors resb 4 ; 0:450h, Video, Cursor position, pages 0...1
|
|---|
| 88 | .displayContext resb 12 ; Our own display context (normally cursors for pages 2...7)
|
|---|
| 89 | .wCursorShape resb 2 ; 0:460h, Video, Cursor shape
|
|---|
| 90 | .bActivePage resb 1 ; 0:462h, Video, Active display page
|
|---|
| 91 | .wVideoPort resb 2 ; 0:463h, Video, I/O Port number base
|
|---|
| 92 | .bInternalModeReg resb 1 ; 0:465h, Video, Internal mode register
|
|---|
| 93 | .bColorPalette resb 1 ; 0:466h, Video, Color palette
|
|---|
| 94 | endstruc
|
|---|
| 95 |
|
|---|
| 96 | struc DISPLAY_CONTEXT
|
|---|
| 97 | .fpCursorPosition resb 4 ; Far pointer to cursor position in video memory
|
|---|
| 98 | .fnCharOut resb 2 ; Function to draw character with
|
|---|
| 99 | .wCharOutParam resb 2 ; User parameter for custom character output function
|
|---|
| 100 | .wCursorShape resb 2 ; Current cursor shape
|
|---|
| 101 | .bAttribute resb 1 ; Selected character attribute
|
|---|
| 102 | .bFlags resb 1 ; Display context flags
|
|---|
| 103 | endstruc
|
|---|
| 104 |
|
|---|
| 105 | ; Display context flags
|
|---|
| 106 | FLG_CONTEXT_ATTRIBUTES EQU (1<<0) ; Character output function uses attributes
|
|---|
| 107 | FLG_CONTEXT_CGA EQU (1<<1) ; CGA detected so prevent CGA snow
|
|---|
| 108 |
|
|---|
| 109 |
|
|---|
| 110 | ; Text mode character attribute byte bits for CGA+ (color adapters)
|
|---|
| 111 | FLG_COLOR_FORE_BLUE EQU (1<<0)
|
|---|
| 112 | FLG_COLOR_FORE_GREEN EQU (1<<1)
|
|---|
| 113 | FLG_COLOR_FORE_RED EQU (1<<2)
|
|---|
| 114 | FLG_COLOR_FORE_INTENSITY EQU (1<<3)
|
|---|
| 115 | FLG_COLOR_FORE_FONT_B EQU (1<<3) ; Select font set B (if available, EGA+)
|
|---|
| 116 | FLG_COLOR_BACK_BLUE EQU (1<<4)
|
|---|
| 117 | FLG_COLOR_BACK_GREEN EQU (1<<5)
|
|---|
| 118 | FLG_COLOR_BACK_RED EQU (1<<6)
|
|---|
| 119 | FLG_COLOR_BACK_INTENSITY EQU (1<<7) ; Intensity when blinking is disabled
|
|---|
| 120 | FLG_COLOR_BLINK EQU (1<<7) ; Blinking color when enabled (enabled by default)
|
|---|
| 121 |
|
|---|
| 122 | ; CGA colors
|
|---|
| 123 | %define COLOR_ATTRIBUTE(foreground, background) ( (foreground) | ((background)<<4) )
|
|---|
| 124 | COLOR_BLACK EQU 0
|
|---|
| 125 | COLOR_BLUE EQU 1
|
|---|
| 126 | COLOR_GREEN EQU 2
|
|---|
| 127 | COLOR_CYAN EQU 3
|
|---|
| 128 | COLOR_RED EQU 4
|
|---|
| 129 | COLOR_MAGENTA EQU 5
|
|---|
| 130 | COLOR_BROWN EQU 6
|
|---|
| 131 | COLOR_WHITE EQU 7 ; Last background color if blinking enabled
|
|---|
| 132 | COLOR_GRAY EQU 8
|
|---|
| 133 | COLOR_LIGHT_BLUE EQU 9
|
|---|
| 134 | COLOR_LIGHT_GREEN EQU 10
|
|---|
| 135 | COLOR_LIGHT_CYAN EQU 11
|
|---|
| 136 | COLOR_LIGHT_RED EQU 12
|
|---|
| 137 | COLOR_LIGHT_MAGENTA EQU 13
|
|---|
| 138 | COLOR_YELLOW EQU 14
|
|---|
| 139 | COLOR_BRIGHT_WHITE EQU 15
|
|---|
| 140 |
|
|---|
| 141 |
|
|---|
| 142 | ; Text mode character attribute byte bits for MDA (monochrome adapters)
|
|---|
| 143 | ; (attributes 00h, 08h, 80h, 88h, 70h, 78h, F0h and F8h are exceptions)
|
|---|
| 144 | FLG_MONO_UNDERLINE EQU (1<<1)
|
|---|
| 145 | FLG_MONO_INTENSITY EQU (1<<3)
|
|---|
| 146 | FLG_MONO_BLINK EQU (1<<7)
|
|---|
| 147 |
|
|---|
| 148 | ; Text mode character attribute bytes for MDA/Hercules (monochrome adapters)
|
|---|
| 149 | ; *Not displayed on some monitors
|
|---|
| 150 | MONO_HIDDEN EQU 00h ; Not displayed (same for 08h, 80h and 88h)
|
|---|
| 151 | MONO_UNDERLINE EQU 01h ; Underlined
|
|---|
| 152 | MONO_NORMAL EQU 07h ; Normal (white on black)
|
|---|
| 153 | MONO_BRIGHT_UNDERLINE EQU 09h ; High intensity, underlined
|
|---|
| 154 | MONO_BRIGHT EQU 0Fh ; High intensity
|
|---|
| 155 | MONO_REVERSE EQU 70h ; Reverse video (black on white)
|
|---|
| 156 | MONO_REVERSE_DARK EQU 78h ; (dark green on green)
|
|---|
| 157 | MONO_BLINK EQU 87h ; Blinking white on black*
|
|---|
| 158 | MONO_BRIGHT_BLINK EQU 8Fh ; Blinking high intensity*
|
|---|
| 159 | MONO_REVERSE_BLINK EQU 0F0h ; Blinking reverse video
|
|---|
| 160 | MONO_REVERSE_DARK_BLINK EQU 0F8h ; (blinking dark green on green)
|
|---|
| 161 |
|
|---|
| 162 |
|
|---|
| 163 | ; Cursor position macro for DX register
|
|---|
| 164 | %define CURSOR_XY(x, y) ( (x) | ((y)<<8) )
|
|---|
| 165 |
|
|---|
| 166 | ; Cursor shapes
|
|---|
| 167 | CURSOR_NORMAL EQU 0607h ; Two line cursor near or at the bottom of cell
|
|---|
| 168 | CURSOR_HIDDEN EQU 2000h
|
|---|
| 169 |
|
|---|
| 170 |
|
|---|
| 171 | ; Display modes
|
|---|
| 172 | CGA_TEXT_MODE_BW40 EQU 0 ; Applications should use...
|
|---|
| 173 | CGA_TEXT_MODE_CO40 EQU 1
|
|---|
| 174 | CGA_TEXT_MODE_BW80 EQU 2 ; ..black, white and bright white attributes only
|
|---|
| 175 | CGA_TEXT_MODE_CO80 EQU 3
|
|---|
| 176 | MDA_TEXT_MODE EQU 7 ; Real monochrome attributes available
|
|---|
| 177 |
|
|---|
| 178 |
|
|---|
| 179 | ; Display segments
|
|---|
| 180 | COLOR_TEXT_SEGMENT EQU 0B800h ; Text modes 0...3 (CGA+)
|
|---|
| 181 | MONO_TEXT_SEGMENT EQU 0B000h ; Text mode 7 (MDA, Hercules)
|
|---|
| 182 |
|
|---|
| 183 | OFFSET_TO_CGA_STATUS_REGISTER EQU 6 ; Base port 3D4h + 6 = 3DAh
|
|---|
| 184 | CGA_STATUS_REGISTER EQU 3DAh
|
|---|
| 185 |
|
|---|
| 186 |
|
|---|
| 187 | ; Control characters for teletype output
|
|---|
| 188 | NULL EQU 00h
|
|---|
| 189 | SOH EQU 01h ; Start of heading
|
|---|
| 190 | STX EQU 02h ; Start of text
|
|---|
| 191 | BELL EQU 07h ; Bell
|
|---|
| 192 | BS EQU 08h ; Backspace
|
|---|
| 193 | TAB EQU 09h ; Horizontal TAB
|
|---|
| 194 | LF EQU 0Ah ; Line feed (newline)
|
|---|
| 195 | CR EQU 0Dh ; Carriage return
|
|---|
| 196 | ESC EQU 1Bh ; Escape
|
|---|
| 197 |
|
|---|
| 198 | ; Non ASCII characters (code page 437)
|
|---|
| 199 | QUOTATION_MARK EQU 34
|
|---|
| 200 | DOUBLE_TOP_RIGHT_CORNER EQU 187
|
|---|
| 201 | DOUBLE_TOP_LEFT_CORNER EQU 201
|
|---|
| 202 | DOUBLE_BOTTOM_RIGHT_CORNER EQU 188
|
|---|
| 203 | DOUBLE_BOTTOM_LEFT_CORNER EQU 200
|
|---|
| 204 | DOUBLE_VERTICAL EQU 186
|
|---|
| 205 | DOUBLE_HORIZONTAL EQU 205
|
|---|
| 206 | DOUBLE_VERTICAL_TO_RIGHT_SINGLE EQU 199
|
|---|
| 207 | DOUBLE_VERTICAL_TO_LEFT_SINGLE EQU 182
|
|---|
| 208 | DOUBLE_LEFT_HORIZONTAL_TO_SINGLE_VERTICAL EQU 181
|
|---|
| 209 | DOUBLE_RIGHT_HORIZONTAL_TO_SINGLE_VERTICAL EQU 198
|
|---|
| 210 | SINGLE_VERTICAL EQU 179
|
|---|
| 211 | SINGLE_HORIZONTAL EQU 196
|
|---|
| 212 | SINGLE_LEFT_HORIZONTAL_TO_VERTICAL EQU 180
|
|---|
| 213 | SINGLE_RIGHT_HORIZONTAL_TO_VERTICAL EQU 195
|
|---|
| 214 | ANGLE_QUOTE_LEFT EQU 174
|
|---|
| 215 | ANGLE_QUOTE_RIGHT EQU 175
|
|---|
| 216 | BLOCK_MOSTLY_BACKGROUND EQU 176
|
|---|
| 217 | BLOCK_EVEN_BACKGROUND_AND_FOREGROUND EQU 177
|
|---|
| 218 | BLOCK_MOSTLY_FOREGROUND EQU 178
|
|---|
| 219 | BLOCK_FULL_FOREGROUND EQU 219
|
|---|
| 220 | ONE_HALF EQU 171
|
|---|
| 221 | ONE_QUARTER EQU 172
|
|---|
| 222 |
|
|---|
| 223 |
|
|---|
| 224 | ; Background character for clearing screen
|
|---|
| 225 | %ifndef SCREEN_BACKGROUND_CHARACTER
|
|---|
| 226 | %define SCREEN_BACKGROUND_CHARACTER BLOCK_MOSTLY_BACKGROUND
|
|---|
| 227 | %endif
|
|---|
| 228 | %ifndef SCREEN_BACKGROUND_ATTRIBUTE
|
|---|
| 229 | %define SCREEN_BACKGROUND_ATTRIBUTE MONO_NORMAL
|
|---|
| 230 | %endif
|
|---|
| 231 | %define SCREEN_BACKGROUND_CHARACTER_AND_ATTRIBUTE (SCREEN_BACKGROUND_CHARACTER | (SCREEN_BACKGROUND_ATTRIBUTE<<8))
|
|---|
| 232 | %define DOS_BACKGROUND_CHARACTER_AND_ATTRIBUTE (' ' | (MONO_NORMAL<<8))
|
|---|
| 233 |
|
|---|
| 234 | %endif ; DISPLAY_INC
|
|---|
