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block drawing support added.

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This commit is contained in:
Jean-François DEL NERO 2015-12-06 00:52:32 +01:00
parent a1708a30b3
commit 977ddba3b8
2 changed files with 47 additions and 11 deletions
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52
src/devices/video/ef9365.cpp
View File

@ -181,31 +181,64 @@ void ef9365_device::draw_border(UINT16 line)
}
void ef9365_device::draw_character( unsigned char c )
void ef9365_device::draw_character( unsigned char c, int block, int smallblock )
{
int x_char,y_char;
int char_base,char_pix;
unsigned int x, y, p;
int x_char_res,y_char_res;
x = ( (m_registers[EF9365_REG_X_MSB]<<8) | m_registers[EF9365_REG_X_LSB]);
y = ( (m_registers[EF9365_REG_Y_MSB]<<8) | m_registers[EF9365_REG_Y_LSB]);
x_char_res = 5;
y_char_res = 8;
if( smallblock )
{
block = 1;
x_char_res = 4;
y_char_res = 4;
}
if(c<96)
{
y = ( 256 - y ) - 8;
y = ( 256 - y ) - y_char_res;
if( ( x < ( 256 - 5 ) ) && ( y < ( 256 - 8 ) ) )
if( ( x < ( 256 - 5 ) ) && ( y < ( 256 - y_char_res ) ) )
{
char_base = c * 5; // 5 bytes per char.
char_pix = 0;
for(y_char=0;y_char<8;y_char++)
if ( block )
{
for(x_char=0;x_char<5;x_char++)
// 5x8 or 4x4 block
for( y_char = 0 ; y_char < y_char_res ; y_char++ )
{
for( x_char = 0 ; x_char < x_char_res ; x_char++ )
{
for( p = 0 ; p < 4 ; p++ )
{
if( m_current_color & (0x01 << p) )
m_videoram->write_byte ( (0x2000*p) + ((((y_char+y)*256) + (x_char+x))>>3), m_videoram->read_byte( (0x2000*p) + ((((y_char+y)*256) + (x_char+x))>>3)) | (0x80 >> ((((y_char+y)*256) + (x_char+x))&7) ) );
else
m_videoram->write_byte ( (0x2000*p) + ((((y_char+y)*256) + (x_char+x))>>3), m_videoram->read_byte( (0x2000*p) + ((((y_char+y)*256) + (x_char+x))>>3)) & ~(0x80 >> ((((y_char+y)*256) + (x_char+x))&7) ) );
}
char_pix++;
}
}
}
else
{
// 5x8 character
for( y_char=0 ; y_char < y_char_res ;y_char++ )
{
for( x_char=0 ; x_char < x_char_res ; x_char++ )
{
if ( m_charset->u8(char_base + (char_pix>>3) ) & ( 0x80 >> (char_pix&7)))
{
for(p = 0 ; p < 4 ; p++)
for( p = 0 ; p < 4 ; p++ )
{
if( m_current_color & (0x01 << p) )
m_videoram->write_byte ( (0x2000*p) + ((((y_char+y)*256) + (x_char+x))>>3), m_videoram->read_byte( (0x2000*p) + ((((y_char+y)*256) + (x_char+x))>>3)) | (0x80 >> ((((y_char+y)*256) + (x_char+x))&7) ) );
@ -217,8 +250,9 @@ void ef9365_device::draw_character( unsigned char c )
char_pix++;
}
}
}
x = x + 6;
x = x + ( x_char_res + 1 );
m_registers[EF9365_REG_X_MSB] = x >> 8;
m_registers[EF9365_REG_X_LSB] = x & 0xFF;
@ -342,11 +376,13 @@ void ef9365_device::ef9365_exec(UINT8 cmd)
#ifdef DBGMODE
printf("5x8 block drawing (size according to CSIZE)\n");
#endif
draw_character( 0x00 , 1 , 0 );
break;
case 0xB: // 4x4 block drawing (size according to CSIZE)
#ifdef DBGMODE
printf("4x4 block drawing (size according to CSIZE)\n");
#endif
draw_character( 0x00 , 1 , 1 );
break;
case 0xC: // Screen scanning : pen or Eraser as defined by CTRL1
#ifdef DBGMODE
@ -411,7 +447,7 @@ void ef9365_device::ef9365_exec(UINT8 cmd)
#ifdef DBGMODE
printf("Draw character\n");
#endif
draw_character( cmd - 0x20 );
draw_character( cmd - 0x20, 0 , 0 );
}
}
}

2
src/devices/video/ef9365.h
View File

@ -58,7 +58,7 @@ protected:
// inline helper
private:
void draw_character( unsigned char c );
void draw_character( unsigned char c, int block, int smallblock );
void screen_scanning( int force_clear );
void set_busy_flag(int period);
void set_video_mode(void);