font.c File Reference

#include "blue.h"

Include dependency graph for font.c:

Go to the source code of this file.

Functions
VOID	OpenBitPlane (VOID)
VOID	CloseBitPlane (VOID)
VOID	LoadFont (_In_ PUCHAR Bitplane, _In_ PUCHAR FontBitfield)
VOID	ScrSetFont (_In_ PUCHAR FontBitfield)

Function Documentation

CloseBitPlane()

VOID CloseBitPlane

(

VOID

)

Definition at line 71 of file font.c.

{
    /* disable interrupts */
    _disable();
 
    /* sequence reg */
    WRITE_PORT_UCHAR(SEQ_COMMAND, SEQ_RESET); WRITE_PORT_UCHAR(SEQ_DATA, 0x01);
    WRITE_PORT_UCHAR(SEQ_COMMAND, SEQ_ENABLE_WRT_PLANE); WRITE_PORT_UCHAR(SEQ_DATA, 0x03);
    WRITE_PORT_UCHAR(SEQ_COMMAND, SEQ_MEM_MODE); WRITE_PORT_UCHAR(SEQ_DATA, 0x03);
    WRITE_PORT_UCHAR(SEQ_COMMAND, SEQ_RESET); WRITE_PORT_UCHAR(SEQ_DATA, 0x03);
 
    /* graphic reg */
    WRITE_PORT_UCHAR(GCT_COMMAND, GCT_READ_PLANE); WRITE_PORT_UCHAR(GCT_DATA, 0x00);
    WRITE_PORT_UCHAR(GCT_COMMAND, GCT_RW_MODES); WRITE_PORT_UCHAR(GCT_DATA, 0x10);
    WRITE_PORT_UCHAR(GCT_COMMAND, GCT_GRAPH_MODE); WRITE_PORT_UCHAR(GCT_DATA, 0x0e);
 
    /* enable interrupts */
    _enable();
}

Referenced by ScrSetFont().

LoadFont()

VOID LoadFont	(	_In_ PUCHAR	Bitplane,
		_In_ PUCHAR	FontBitfield
	)

Definition at line 92 of file font.c.

{
    UINT32 i, j;
 
    for (i = 0; i < 256; i++)
    {
        for (j = 0; j < 8; j++)
        {
            *Bitplane = FontBitfield[i * 8 + j];
            Bitplane++;
        }
 
        // padding
        for (j = 8; j < 32; j++)
        {
            *Bitplane = 0;
            Bitplane++;
        }
    }
}

Referenced by ScrSetFont().

OpenBitPlane()

VOID OpenBitPlane

(

VOID

)

Definition at line 50 of file font.c.

{
    /* disable interrupts */
    _disable();
 
    /* sequence reg */
    WRITE_PORT_UCHAR(SEQ_COMMAND, SEQ_RESET); WRITE_PORT_UCHAR(SEQ_DATA, 0x01);
    WRITE_PORT_UCHAR(SEQ_COMMAND, SEQ_ENABLE_WRT_PLANE); WRITE_PORT_UCHAR(SEQ_DATA, 0x04);
    WRITE_PORT_UCHAR(SEQ_COMMAND, SEQ_MEM_MODE); WRITE_PORT_UCHAR(SEQ_DATA, 0x07);
    WRITE_PORT_UCHAR(SEQ_COMMAND, SEQ_RESET); WRITE_PORT_UCHAR(SEQ_DATA, 0x03);
 
    /* graphic reg */
    WRITE_PORT_UCHAR(GCT_COMMAND, GCT_READ_PLANE); WRITE_PORT_UCHAR(GCT_DATA, 0x02);
    WRITE_PORT_UCHAR(GCT_COMMAND, GCT_RW_MODES); WRITE_PORT_UCHAR(GCT_DATA, 0x00);
    WRITE_PORT_UCHAR(GCT_COMMAND, GCT_GRAPH_MODE); WRITE_PORT_UCHAR(GCT_DATA, 0x00);
 
    /* enable interrupts */
    _enable();
}

Referenced by ScrSetFont().

ScrSetFont()

VOID ScrSetFont

(

_In_ PUCHAR

FontBitfield

)

Definition at line 25 of file font.c.

{
    PHYSICAL_ADDRESS BaseAddress;
    PUCHAR Bitplane;
 
    /* open bit plane for font table access */
    OpenBitPlane();
 
    /* get pointer to video memory */
    BaseAddress.QuadPart = BITPLANE_BASE;
    Bitplane = (PUCHAR)MmMapIoSpace(BaseAddress, 0xFFFF, MmNonCached);
 
    LoadFont(Bitplane, FontBitfield);
 
    MmUnmapIoSpace(Bitplane, 0xFFFF);
 
    /* close bit plane */
    CloseBitPlane();
}

Referenced by ScrAcquireOwnership(), and ScrIoControl().