source: xtideuniversalbios/trunk/Assembly_Library/Inc/Display.inc@ 129

Last change on this file since 129 was 91, checked in by Tomi Tilli, 14 years ago

Changes to Assembly Library:

  • Added some equates for code page 437 characters.
File size: 8.7 KB
RevLine 
[41]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
[52]24 %elifidn %1, PrepareOffScreenBufferInESBXwithLengthInCX
25 call DisplayContext_PrepareOffScreenBufferInESBXwithLengthInCX
[41]26 %else
27 mov di, DISPLAY_LIB.%1
28 call Display_FunctionFromDI
29 %endif
30%endmacro
31
32
33; Display library functions
34struc DISPLAY_LIB
35 .PushDisplayContext:
36 .PopDisplayContext:
[44]37 .InitializeDisplayContext resb 2
[41]38
[44]39 .SetCharacterPointerFromBXAX resb 2
[45]40 .SetCharOutputFunctionFromAXwithAttribFlagInBL resb 2
[44]41 .SetCharacterOutputParameterFromAX resb 2
42 .SetCharacterAttributeFromAL resb 2
43 .SetCursorShapeFromAX resb 2
44 .SetCursorCoordinatesFromAX resb 2
45 .SetNewPageFromAL resb 2
46 .SynchronizeDisplayContextToHardware resb 2
[41]47
[44]48 .GetCharacterPointerToBXAX resb 2
49 .GetSoftwareCoordinatesToAX resb 2
50 .GetColumnsToALandRowsToAH resb 2
[41]51
[44]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
[67]62 .ClearScreenWithCharInALandAttrInAH resb 2
[41]63endstruc
64
[44]65; Attribute flags for DISPLAY_LIB.SetCharacterOutputFunctionFromAXwithAttributeFlagInDL
66ATTRIBUTES_NOT_USED EQU 0
67ATTRIBUTES_ARE_USED EQU FLG_CONTEXT_ATTRIBUTES
68
69; Character output functions for DISPLAY_LIB.SetCharacterOutputFunctionFromAXwithAttributeFlagInDL
[41]70TELETYPE_OUTPUT_WITH_ATTRIBUTE EQU DisplayCharOut_TeletypeOutputWithAttribute
71TELETYPE_OUTPUT_WITHOUT_ATTRIBUTE EQU DisplayCharOut_TeletypeOutput
72TELETYPE_OUTPUT_USING_BIOS EQU DisplayCharOut_BiosTeletypeOutput
73FAST_OUTPUT_WITH_ATTRIBUTE_ONLY EQU DisplayCharOut_Attribute
74FAST_OUTPUT_WITH_CHAR_ONLY EQU DisplayCharOut_Character
75FAST_OUTPUT_WITH_CHAR_AND_ATTRIBUTE EQU DisplayCharOut_CharacterWithAttribute
76BUFFER_OUTPUT_WITH_CHAR_ONLY EQU DisplayCharOut_WriteCharacterToBuffer
77
78DEFAULT_CHARACTER_OUTPUT EQU TELETYPE_OUTPUT_WITH_ATTRIBUTE
79
80
81struc 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
94endstruc
95
96struc 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
[44]102 .bFlags resb 1 ; Display context flags
[41]103endstruc
104
[44]105; Display context flags
106FLG_CONTEXT_ATTRIBUTES EQU (1<<0) ; Character output function uses attributes
[50]107FLG_CONTEXT_CGA EQU (1<<1) ; CGA detected so prevent CGA snow
[41]108
[44]109
[41]110; Text mode character attribute byte bits for CGA+ (color adapters)
111FLG_COLOR_FORE_BLUE EQU (1<<0)
112FLG_COLOR_FORE_GREEN EQU (1<<1)
113FLG_COLOR_FORE_RED EQU (1<<2)
114FLG_COLOR_FORE_INTENSITY EQU (1<<3)
115FLG_COLOR_FORE_FONT_B EQU (1<<3) ; Select font set B (if available, EGA+)
116FLG_COLOR_BACK_BLUE EQU (1<<4)
117FLG_COLOR_BACK_GREEN EQU (1<<5)
118FLG_COLOR_BACK_RED EQU (1<<6)
119FLG_COLOR_BACK_INTENSITY EQU (1<<7) ; Intensity when blinking is disabled
120FLG_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) )
124COLOR_BLACK EQU 0
125COLOR_BLUE EQU 1
126COLOR_GREEN EQU 2
127COLOR_CYAN EQU 3
128COLOR_RED EQU 4
129COLOR_MAGENTA EQU 5
130COLOR_BROWN EQU 6
131COLOR_WHITE EQU 7 ; Last background color if blinking enabled
132COLOR_GRAY EQU 8
133COLOR_LIGHT_BLUE EQU 9
134COLOR_LIGHT_GREEN EQU 10
135COLOR_LIGHT_CYAN EQU 11
136COLOR_LIGHT_RED EQU 12
137COLOR_LIGHT_MAGENTA EQU 13
138COLOR_YELLOW EQU 14
139COLOR_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)
144FLG_MONO_UNDERLINE EQU (1<<1)
145FLG_MONO_INTENSITY EQU (1<<3)
146FLG_MONO_BLINK EQU (1<<7)
147
148; Text mode character attribute bytes for MDA/Hercules (monochrome adapters)
149; *Not displayed on some monitors
150MONO_HIDDEN EQU 00h ; Not displayed (same for 08h, 80h and 88h)
151MONO_UNDERLINE EQU 01h ; Underlined
152MONO_NORMAL EQU 07h ; Normal (white on black)
153MONO_BRIGHT_UNDERLINE EQU 09h ; High intensity, underlined
154MONO_BRIGHT EQU 0Fh ; High intensity
155MONO_REVERSE EQU 70h ; Reverse video (black on white)
156MONO_REVERSE_DARK EQU 78h ; (dark green on green)
157MONO_BLINK EQU 87h ; Blinking white on black*
158MONO_BRIGHT_BLINK EQU 8Fh ; Blinking high intensity*
159MONO_REVERSE_BLINK EQU 0F0h ; Blinking reverse video
160MONO_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
167CURSOR_NORMAL EQU 0607h ; Two line cursor near or at the bottom of cell
168CURSOR_HIDDEN EQU 2000h
169
170
171; Display modes
172CGA_TEXT_MODE_BW40 EQU 0 ; Applications should use...
173CGA_TEXT_MODE_CO40 EQU 1
174CGA_TEXT_MODE_BW80 EQU 2 ; ..black, white and bright white attributes only
175CGA_TEXT_MODE_CO80 EQU 3
176MDA_TEXT_MODE EQU 7 ; Real monochrome attributes available
177
178
179; Display segments
180COLOR_TEXT_SEGMENT EQU 0B800h ; Text modes 0...3 (CGA+)
181MONO_TEXT_SEGMENT EQU 0B000h ; Text mode 7 (MDA, Hercules)
182
[48]183OFFSET_TO_CGA_STATUS_REGISTER EQU 6 ; Base port 3D4h + 6 = 3DAh
184CGA_STATUS_REGISTER EQU 3DAh
[41]185
[48]186
[41]187; Control characters for teletype output
188NULL EQU 00h
189SOH EQU 01h ; Start of heading
190STX EQU 02h ; Start of text
191BELL EQU 07h ; Bell
192BS EQU 08h ; Backspace
193TAB EQU 09h ; Horizontal TAB
194LF EQU 0Ah ; Line feed (newline)
195CR EQU 0Dh ; Carriage return
196ESC EQU 1Bh ; Escape
197
198; Non ASCII characters (code page 437)
[91]199QUOTATION_MARK EQU 34
[41]200DOUBLE_TOP_RIGHT_CORNER EQU 187
201DOUBLE_TOP_LEFT_CORNER EQU 201
202DOUBLE_BOTTOM_RIGHT_CORNER EQU 188
203DOUBLE_BOTTOM_LEFT_CORNER EQU 200
204DOUBLE_VERTICAL EQU 186
205DOUBLE_HORIZONTAL EQU 205
206DOUBLE_VERTICAL_TO_RIGHT_SINGLE EQU 199
207DOUBLE_VERTICAL_TO_LEFT_SINGLE EQU 182
208DOUBLE_LEFT_HORIZONTAL_TO_SINGLE_VERTICAL EQU 181
209DOUBLE_RIGHT_HORIZONTAL_TO_SINGLE_VERTICAL EQU 198
[85]210SINGLE_VERTICAL EQU 179
[41]211SINGLE_HORIZONTAL EQU 196
212SINGLE_LEFT_HORIZONTAL_TO_VERTICAL EQU 180
213SINGLE_RIGHT_HORIZONTAL_TO_VERTICAL EQU 195
214ANGLE_QUOTE_LEFT EQU 174
215ANGLE_QUOTE_RIGHT EQU 175
[44]216BLOCK_MOSTLY_BACKGROUND EQU 176
217BLOCK_EVEN_BACKGROUND_AND_FOREGROUND EQU 177
218BLOCK_MOSTLY_FOREGROUND EQU 178
219BLOCK_FULL_FOREGROUND EQU 219
[91]220ONE_HALF EQU 171
221ONE_QUARTER EQU 172
[41]222
223
[44]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
[67]231%define SCREEN_BACKGROUND_CHARACTER_AND_ATTRIBUTE (SCREEN_BACKGROUND_CHARACTER | (SCREEN_BACKGROUND_ATTRIBUTE<<8))
232%define DOS_BACKGROUND_CHARACTER_AND_ATTRIBUTE (' ' | (MONO_NORMAL<<8))
[44]233
[41]234%endif ; DISPLAY_INC
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