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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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56
src/devices/video/ef9365.cpp
View File

@ -181,44 +181,78 @@ 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 x_char,y_char;
int char_base,char_pix; int char_base,char_pix;
unsigned int x, y, p; 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]); 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]); 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) 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_base = c * 5; // 5 bytes per char.
char_pix = 0; 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++ )
{ {
if ( m_charset->u8(char_base + (char_pix>>3) ) & ( 0x80 >> (char_pix&7))) for( x_char = 0 ; x_char < x_char_res ; x_char++ )
{ {
for(p = 0 ; p < 4 ; p++) for( p = 0 ; p < 4 ; p++ )
{ {
if( m_current_color & (0x01 << 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) ) ); 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 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) ) ); 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++ )
{
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++; char_pix++;
}
} }
} }
x = x + 6; x = x + ( x_char_res + 1 );
m_registers[EF9365_REG_X_MSB] = x >> 8; m_registers[EF9365_REG_X_MSB] = x >> 8;
m_registers[EF9365_REG_X_LSB] = x & 0xFF; m_registers[EF9365_REG_X_LSB] = x & 0xFF;
@ -342,11 +376,13 @@ void ef9365_device::ef9365_exec(UINT8 cmd)
#ifdef DBGMODE #ifdef DBGMODE
printf("5x8 block drawing (size according to CSIZE)\n"); printf("5x8 block drawing (size according to CSIZE)\n");
#endif #endif
draw_character( 0x00 , 1 , 0 );
break; break;
case 0xB: // 4x4 block drawing (size according to CSIZE) case 0xB: // 4x4 block drawing (size according to CSIZE)
#ifdef DBGMODE #ifdef DBGMODE
printf("4x4 block drawing (size according to CSIZE)\n"); printf("4x4 block drawing (size according to CSIZE)\n");
#endif #endif
draw_character( 0x00 , 1 , 1 );
break; break;
case 0xC: // Screen scanning : pen or Eraser as defined by CTRL1 case 0xC: // Screen scanning : pen or Eraser as defined by CTRL1
#ifdef DBGMODE #ifdef DBGMODE
@ -411,7 +447,7 @@ void ef9365_device::ef9365_exec(UINT8 cmd)
#ifdef DBGMODE #ifdef DBGMODE
printf("Draw character\n"); printf("Draw character\n");
#endif #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 // inline helper
private: private:
void draw_character( unsigned char c ); void draw_character( unsigned char c, int block, int smallblock );
void screen_scanning( int force_clear ); void screen_scanning( int force_clear );
void set_busy_flag(int period); void set_busy_flag(int period);
void set_video_mode(void); void set_video_mode(void);