source: xtideuniversalbios/trunk/Assembly_Library/Src/Menu/CharOutLineSplitter.asm@ 596

Last change on this file since 596 was 589, checked in by Krister Nordvall, 8 years ago

Changes:

  • BIOS: Fixed a purely cosmetic bug from r542 where, in builds containing MODULE_EBIOS, the boot menu would display an incorrect drive size (0.4 kB with MODULE_STRINGS_COMPRESSED or 0.5 kB without) for old drives with no support for LBA.
  • Fixed a bug from r392 where Vision_DetectAndReturnIDinAXandPortInDXifControllerPresent would return the ID in AL instead of AH (if DANGEROUS_DETECTION had been defined).
  • Fixed a bug from r587 in AdvAtaInit.asm that would prevent detection of QDI Vision controllers.
  • Also changed how the QDI Vision IDs are defined (removed the need for shifting) to avoid confusion. This fixed a potential bug from r587 in AdvAtaInit.asm where some IDs were not being shifted.
  • Fixed a bug in PDC20x30.asm from r587 where GetPdcIDtoAX would not return with the IDE base port in DX so DisablePdcProgrammingMode would fail.
  • Made some changes to ModuleDependency.inc and other files so that MODULE_ADVANCED_ATA now requires USE_386. Consequently it is no longer included in the regular AT-builds, only in the 386_8k-build.
  • Moved the UNROLL_SECTORS_IN_CX_TO_xWORDS macros from IDE_8bit.inc to IdeIO.inc which means it's now possible to build a BIOS without MODULE_8BIT_IDE.
  • XTIDECFG: Added a minimum DOS version check (since it needs DOS version 2+) to allow the program to quit gracefully in the unlikely scenario where someone tries to run it under DOS version 1.
  • Made some changes to Drive.asm to improve drive enumeration. The old method using GET_DOS_DRIVE_PARAMETER_BLOCK_FOR_SPECIFIC_DRIVE worked well in Windows XP but not in Windows 98 SE (in Windows or in DOS mode). The two problems were; 1) The function call would access the drives which on single floppy drive systems would cause Windows to swap between A: and B: (throwing a blue screen asking the user to insert a disk etc). 2) Only floppy drives and FAT16 drives would be available in the list of drives, no FAT32/optical/network drives.
  • Improved code in IdeControllerMenu.asm so that the default port addresses for all IDE interfaces are now restored when (re-)selecting the (same) type of IDE device.
  • Also made it impossible to select a device type unless the required module is included in the loaded BIOS.
  • The version check done when loading a BIOS now uses the FLASH_SIGNATURE definition from Version.inc. Any changes affecting RomVars now only requires updating that definition. This means that changes to RomVars must be implemented in both the BIOS and XTIDECFG before being committed to the repository.
  • Added a compatibility fix for 3Com 3C503 cards to the ROM checksumming code in Buffers.asm (Buffers_GenerateChecksum).
  • SerDrive: Made some minor changes to file names and paths to improve compatibility with case sensitive environments.
  • BIOSDRVS: Made a minor size optimization which as a side effect also makes it compatible with all DOS versions including DOS version 1.
  • Library: Renamed the WAIT_RETRACE_IF_NECESSARY_THEN macro to CALL_WAIT_FOR_RETRACE_IF_NECESSARY_THEN and made a tail-call-optimized version of it (JMP_WAIT_FOR_RETRACE_IF_NECESSARY_THEN).
  • A speed optimization to the eRCL_IM macro for 386 and higher. This change breaks emulation in the sense that the macro will fail when given a memory operand as the first parameter.
  • Other minor optimizations and fixes.
File size: 5.5 KB
Line 
1; Project name : Assembly Library
2; Description : Functions for splitting menu lines during character output.
3
4;
5; XTIDE Universal BIOS and Associated Tools
6; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
7;
8; This program is free software; you can redistribute it and/or modify
9; it under the terms of the GNU General Public License as published by
10; the Free Software Foundation; either version 2 of the License, or
11; (at your option) any later version.
12;
13; This program is distributed in the hope that it will be useful,
14; but WITHOUT ANY WARRANTY; without even the implied warranty of
15; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16; GNU General Public License for more details.
17; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
18;
19
20
21; Section containing code
22SECTION .text
23
24;--------------------------------------------------------------------
25; CharOutLineSplitter_PrepareForPrintingTextLines
26; Parameters:
27; SS:BP: Ptr to MENU
28; Returns:
29; Nothing
30; Corrupts registers:
31; AX, DX, DI
32;--------------------------------------------------------------------
33ALIGN MENU_JUMP_ALIGN
34CharOutLineSplitter_PrepareForPrintingTextLines:
35 ; Get first text line column offset to DX
36 call CharOutLineSplitter_GetFirstBorderLineColumnOffsetToAX
37 add al, MENU_TEXT_COLUMN_OFFSET<<1
38 xchg dx, ax
39
40 ; Get last text line column offset to AX
41 call MenuLocation_GetMaxTextLineLengthToAX
42 eSHL_IM ax, 1 ; Characters to BYTEs
43 add ax, dx
44
45 xchg ax, dx ; AL = First text line column offset
46 mov ah, dl ; AH = Last text line column offset
47 JMP_DISPLAY_LIBRARY SetCharacterOutputParameterFromAX
48
49
50;--------------------------------------------------------------------
51; CharOutLineSplitter_GetFirstBorderLineColumnOffsetToAX
52; Parameters:
53; SS:BP: Ptr to MENU
54; Returns:
55; AX: Offset to end of text line (first border area character)
56; Corrupts registers:
57; Nothing
58;--------------------------------------------------------------------
59ALIGN MENU_JUMP_ALIGN
60CharOutLineSplitter_GetFirstBorderLineColumnOffsetToAX:
61 call MenuLocation_GetTitleBordersTopLeftCoordinatesToAX
62 xor ah, ah
63 eSHL_IM ax, 1
64 ret
65
66
67;--------------------------------------------------------------------
68; CharOutLineSplitter_IsCursorAtTheEndOfTextLine
69; Parameters:
70; DS: BDA segment (zero)
71; ES:DI: Ptr to cursor location in video memory
72; Returns:
73; CF: Set if end of text line
74; Clear if more characters fit on current text line
75; Corrupts registers:
76; DX
77;--------------------------------------------------------------------
78ALIGN MENU_JUMP_ALIGN
79CharOutLineSplitter_IsCursorAtTheEndOfTextLine:
80 push ax
81
82 mov dl, [VIDEO_BDA.wColumns]
83 eSHL_IM dl, 1 ; DX = bytes per row
84 mov ax, di
85 div dl ; AL = row index, AH = column index
86 cmp [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.wCharOutParam+1], ah
87
88 pop ax
89 ret
90
91
92;--------------------------------------------------------------------
93; CharOutLineSplitter_MovePartialWordToNewTextLine
94; Parameters:
95; AL: Character to output
96; AH: Attribute to output
97; DS: BDA segment (zero)
98; ES:DI: Ptr to end of text line in video memory
99; Returns:
100; DI: Updated to next character for new text line
101; Corrupts registers:
102; AX, DX
103;--------------------------------------------------------------------
104ALIGN MENU_JUMP_ALIGN
105CharOutLineSplitter_MovePartialWordToNewTextLine:
106 push si
107 push cx
108 push ax
109 ; Fall to .GetOffsetToPartialWordToSIandSizeToCX
110
111;--------------------------------------------------------------------
112; .GetOffsetToPartialWordToSIandSizeToCX
113; Parameters:
114; ES:DI: Ptr to space before border character
115; Returns:
116; CX: Number of bytes that needs to be moved
117; ES:SI: Ptr to beginning of partial word that needs to be moved to new line
118; Corrupts registers:
119; Nothing
120;--------------------------------------------------------------------
121.GetOffsetToPartialWordToSIandSizeToCX:
122 mov cx, di
123 mov si, di
124ALIGN MENU_JUMP_ALIGN
125.ScanNextCharacter: ; Space will always be found since one comes after border
126 dec si
127 dec si
128 cmp BYTE [es:si], ' '
129 jne SHORT .ScanNextCharacter
130 inc si
131 inc si ; SI now points one past space
132 sub cx, si
133 ; Fall to .ChangeLine
134
135;--------------------------------------------------------------------
136; .ChangeLine
137; Parameters:
138; Nothing
139; Returns:
140; Nothing
141; Corrupts registers:
142; AX, DX
143;--------------------------------------------------------------------
144.ChangeLine:
145 call MenuCharOut_PrintLFCRandAdjustOffsetForStartOfLine
146 jcxz .ReturnFromMovePartialWordToNewTextLine
147 ; Fall to .MovePartialWordFromPreviousLineInESSItoNewLineInESDIwithSizeInCX
148
149;--------------------------------------------------------------------
150; .MovePartialWordFromPreviousLineInESSItoNewLineInESDIwithSizeInCX
151; Parameters:
152; CX: Number of BYTEs in partial word
153; DS: BDA segment (zero)
154; ES:SI: Ptr to partial word on previous line
155; ES:DI: Ptr to new empty line
156; Returns:
157; ES:DI: Ptr where to store next character
158; Corrupts registers:
159; AX, CX, DX, SI
160;--------------------------------------------------------------------
161.MovePartialWordFromPreviousLineInESSItoNewLineInESDIwithSizeInCX:
162 push si
163 push cx
164 CALL_WAIT_FOR_RETRACE_IF_NECESSARY_THEN rep movsb
165 pop cx
166 pop si
167
168 xchg di, si
169 shr cx, 1 ; Bytes to characters
170 mov al, ' '
171 call DisplayPrint_RepeatCharacterFromALwithCountInCX
172 mov di, si
173
174.ReturnFromMovePartialWordToNewTextLine:
175 pop ax
176 pop cx
177 pop si
178 ret
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