ReactOS 0.4.15-dev-8102-g108db8f
pc.h File Reference

Go to the source code of this file.

Macros

#define __inpb(Port)    READ_PORT_UCHAR((PUCHAR)(VgaRegisterBase + (Port)))
 
#define __inpw(Port)    READ_PORT_USHORT((PUSHORT)(VgaRegisterBase + (Port)))
 
#define __outpb(Port, Value)    WRITE_PORT_UCHAR((PUCHAR)(VgaRegisterBase + (Port)), (UCHAR)(Value))
 
#define __outpw(Port, Value)    WRITE_PORT_USHORT((PUSHORT)(VgaRegisterBase + (Port)), (USHORT)(Value))
 

Functions

VOID InitPaletteWithTable (_In_ PULONG Table, _In_ ULONG Count)
 
VOID PrepareForSetPixel (VOID)
 
FORCEINLINE VOID SetPixel (_In_ ULONG Left, _In_ ULONG Top, _In_ UCHAR Color)
 
VOID PreserveRow (_In_ ULONG CurrentTop, _In_ ULONG TopDelta, _In_ BOOLEAN Restore)
 
VOID DoScroll (_In_ ULONG Scroll)
 
VOID DisplayCharacter (_In_ CHAR Character, _In_ ULONG Left, _In_ ULONG Top, _In_ ULONG TextColor, _In_ ULONG BackColor)
 

Variables

ULONG_PTR VgaRegisterBase
 
ULONG_PTR VgaBase
 
USHORT AT_Initialization []
 
USHORT VGA_640x480 []
 
UCHAR PixelMask [8]
 

Macro Definition Documentation

◆ __inpb

#define __inpb (   Port)     READ_PORT_UCHAR((PUCHAR)(VgaRegisterBase + (Port)))

Definition at line 16 of file pc.h.

◆ __inpw

#define __inpw (   Port)     READ_PORT_USHORT((PUSHORT)(VgaRegisterBase + (Port)))

Definition at line 19 of file pc.h.

◆ __outpb

#define __outpb (   Port,
  Value 
)     WRITE_PORT_UCHAR((PUCHAR)(VgaRegisterBase + (Port)), (UCHAR)(Value))

Definition at line 22 of file pc.h.

◆ __outpw

#define __outpw (   Port,
  Value 
)     WRITE_PORT_USHORT((PUSHORT)(VgaRegisterBase + (Port)), (USHORT)(Value))

Definition at line 25 of file pc.h.

Function Documentation

◆ DisplayCharacter()

VOID DisplayCharacter ( _In_ CHAR  Character,
_In_ ULONG  Left,
_In_ ULONG  Top,
_In_ ULONG  TextColor,
_In_ ULONG  BackColor 
)

Definition at line 19 of file bootvid.c.

25{
26 PUCHAR FontChar;
27 ULONG i, j, XOffset;
28
29 /* Get the font line for this character */
30 FontChar = &VidpFontData[Character * BOOTCHAR_HEIGHT - Top];
31
32 /* Loop each pixel height */
33 for (i = BOOTCHAR_HEIGHT; i > 0; --i)
34 {
35 /* Loop each pixel width */
36 XOffset = Left;
37 for (j = (1 << 7); j > 0; j >>= 1)
38 {
39 /* Check if we should draw this pixel */
40 if (FontChar[Top] & (UCHAR)j)
41 {
42 /* We do, use the given Text Color */
43 SetPixel(XOffset, Top, (UCHAR)TextColor);
44 }
45 else if (BackColor < BV_COLOR_NONE)
46 {
47 /*
48 * This is a background pixel. We're drawing it
49 * unless it's transparent.
50 */
51 SetPixel(XOffset, Top, (UCHAR)BackColor);
52 }
53
54 /* Increase X Offset */
55 XOffset++;
56 }
57
58 /* Move to the next Y ordinate */
59 Top++;
60 }
61}
FORCEINLINE VOID SetPixel(_In_ ULONG Left, _In_ ULONG Top, _In_ UCHAR Color)
Definition: arm.h:55
static LPHIST_ENTRY Top
Definition: history.c:53
#define BOOTCHAR_HEIGHT
Definition: precomp.h:36
UCHAR VidpFontData[256 *BOOTCHAR_HEIGHT]
Definition: fontdata.c:16
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
Definition: glfuncs.h:250
#define BV_COLOR_NONE
Definition: display.h:31
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
unsigned char UCHAR
Definition: xmlstorage.h:181

◆ DoScroll()

VOID DoScroll ( _In_ ULONG  Scroll)

Definition at line 64 of file bootvid.c.

66{
68 PUSHORT SourceOffset, DestOffset;
69 PUSHORT i, j;
70
71 /* Set memory positions of the scroll */
73 DestOffset = &SourceOffset[Scroll * (SCREEN_WIDTH / 8)];
74
75 /* Start loop */
76 for (Top = VidpScrollRegion[1]; Top <= VidpScrollRegion[3]; ++Top)
77 {
78 /* Set number of bytes to loop and start offset */
79 Offset = VidpScrollRegion[0] >> 3;
81
82 /* Check if this is part of the scroll region */
83 if (Offset <= (VidpScrollRegion[2] >> 3))
84 {
85 /* Update position */
86 i = (PUSHORT)(DestOffset - SourceOffset);
87
88 /* Loop the X axis */
89 do
90 {
91 /* Write value in the new position so that we can do the scroll */
93
94 /* Move to the next memory location to write to */
95 j++;
96
97 /* Move to the next byte in the region */
98 Offset++;
99
100 /* Make sure we don't go past the scroll region */
101 } while (Offset <= (VidpScrollRegion[2] >> 3));
102 }
103
104 /* Move to the next line */
105 SourceOffset += (SCREEN_WIDTH / 8);
106 DestOffset += (SCREEN_WIDTH / 8);
107 }
108}
PUSHORT VgaArmBase
Definition: bootvid.c:13
#define WRITE_REGISTER_USHORT(r, v)
Definition: arm.h:30
#define READ_REGISTER_USHORT(r)
Definition: arm.h:29
ULONG VidpScrollRegion[4]
Definition: common.c:19
_In_ ULONG _In_ ULONG Offset
Definition: ntddpcm.h:101
#define SCREEN_WIDTH
Definition: pc98video.c:27
uint16_t * PUSHORT
Definition: typedefs.h:56
uint32_t ULONG_PTR
Definition: typedefs.h:65
_Must_inspect_result_ _In_ WDFMEMORY _In_ size_t SourceOffset
Definition: wdfmemory.h:320

◆ InitPaletteWithTable()

VOID InitPaletteWithTable ( _In_ PULONG  Table,
_In_ ULONG  Count 
)

Definition at line 172 of file bootvid.c.

175{
177}
#define UNIMPLEMENTED
Definition: debug.h:118

◆ PrepareForSetPixel()

VOID PrepareForSetPixel ( VOID  )

Definition at line 90 of file vga.c.

91{
92 /* Switch to mode 10 */
93 ReadWriteMode(10);
94
95 /* Clear the 4 planes (we're already in unchained mode here) */
97
98 /* Select the color don't care register */
100}
static VOID ReadWriteMode(_In_ UCHAR Mode)
Definition: vga.c:74
#define SEQ_ADDRESS_PORT
Definition: vga.h:69
#define GRAPH_ADDRESS_PORT
Definition: vga.h:81
#define VGA_BASE_IO_PORT
Definition: vga.h:38
#define __outpw(Port, Value)
Definition: pc.h:25

Referenced by BitBlt(), and RleBitBlt().

◆ PreserveRow()

VOID PreserveRow ( _In_ ULONG  CurrentTop,
_In_ ULONG  TopDelta,
_In_ BOOLEAN  Restore 
)

Definition at line 111 of file bootvid.c.

115{
116 PUSHORT Position1, Position2;
117 ULONG Count;
118
119 /* Calculate the position in memory for the row */
120 if (Restore)
121 {
122 /* Restore the row by copying back the contents saved off-screen */
123 Position1 = &VgaArmBase[CurrentTop * (SCREEN_WIDTH / 8)];
124 Position2 = &VgaArmBase[SCREEN_HEIGHT * (SCREEN_WIDTH / 8)];
125 }
126 else
127 {
128 /* Preserve the row by saving its contents off-screen */
129 Position1 = &VgaArmBase[SCREEN_HEIGHT * (SCREEN_WIDTH / 8)];
130 Position2 = &VgaArmBase[CurrentTop * (SCREEN_WIDTH / 8)];
131 }
132
133 /* Set the count and loop every pixel */
134 Count = TopDelta * (SCREEN_WIDTH / 8);
135 while (Count--)
136 {
137 /* Write the data back on the other position */
138 WRITE_REGISTER_USHORT(Position1, READ_REGISTER_USHORT(Position2));
139
140 /* Increase both positions */
141 Position1++;
142 Position2++;
143 }
144}
int Count
Definition: noreturn.cpp:7
#define SCREEN_HEIGHT
Definition: pc98video.c:28

◆ SetPixel()

FORCEINLINE VOID SetPixel ( _In_ ULONG  Left,
_In_ ULONG  Top,
_In_ UCHAR  Color 
)

Definition at line 38 of file pc.h.

42{
43 PUCHAR PixelPosition;
44
45 /* Calculate the pixel position */
46 PixelPosition = (PUCHAR)(VgaBase + (Left >> 3) + (Top * (SCREEN_WIDTH / 8)));
47
48 /* Select the bitmask register and write the mask */
50
51 /* Dummy read to load latch registers */
52 (VOID)READ_REGISTER_UCHAR(PixelPosition);
53
54 /* Set the new color */
55 WRITE_REGISTER_UCHAR(PixelPosition, Color);
56}
#define VOID
Definition: acefi.h:82
#define IND_BIT_MASK
Definition: vga.h:114
ULONG_PTR VgaBase
Definition: vga.c:69
UCHAR PixelMask[8]
Definition: vga.c:37
NTKERNELAPI VOID NTAPI WRITE_REGISTER_UCHAR(IN PUCHAR Register, IN UCHAR Value)
NTKERNELAPI UCHAR NTAPI READ_REGISTER_UCHAR(IN PUCHAR Register)

Variable Documentation

◆ AT_Initialization

USHORT AT_Initialization[]
extern

Definition at line 15 of file bootdata.c.

Referenced by VidInitialize(), and VidResetDisplay().

◆ PixelMask

UCHAR PixelMask[8]
extern

Definition at line 37 of file vga.c.

Referenced by ConsoleEfiGopIsPixelFormatSupported(), DisplayCharacter(), and SetPixel().

◆ VGA_640x480

USHORT VGA_640x480[]
extern

Definition at line 46 of file bootdata.c.

Referenced by VidInitialize(), and VidResetDisplay().

◆ VgaBase

◆ VgaRegisterBase

ULONG_PTR VgaRegisterBase
extern

Definition at line 68 of file vga.c.

Referenced by VgaInterpretCmdStream(), and VidInitialize().