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Clear screen, Screen scanning command added.

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Palette support added.
This commit is contained in:
Jean-François DEL NERO 2015-12-01 21:29:42 +01:00
parent 16af278da9
commit c6a155f544
2 changed files with 84 additions and 28 deletions
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106
src/devices/video/ef9365.cpp
View File

@ -19,11 +19,12 @@
const device_type EF9365 = &device_creator<ef9365_device>;
// default address map
// Up to 4 bitplans @ 256*256
static ADDRESS_MAP_START( ef9365, AS_0, 8, ef9365_device )
AM_RANGE(0x0000, 0x1fff) AM_RAM // BLUE
AM_RANGE(0x2000, 0x3fff) AM_RAM // GREEN
AM_RANGE(0x4000, 0x5fff) AM_RAM // RED
AM_RANGE(0x6000, 0x7fff) AM_RAM // INTENSITY
AM_RANGE(0x0000, 0x1fff) AM_RAM
AM_RANGE(0x2000, 0x3fff) AM_RAM
AM_RANGE(0x4000, 0x5fff) AM_RAM
AM_RANGE(0x6000, 0x7fff) AM_RAM
ADDRESS_MAP_END
//-------------------------------------------------
@ -78,18 +79,40 @@ void ef9365_device::static_set_color_filler( UINT8 color )
m_current_color = color;
}
//-------------------------------------------------
// static_set_color_entry: Set the color value
// into the palette
//-------------------------------------------------
void ef9365_device::static_set_color_entry( int index, UINT8 r, UINT8 g, UINT8 b )
{
if( index < 16 )
{
palette[index] = rgb_t(r, g, b);
}
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void ef9365_device::device_start()
{
int i;
m_busy_timer = timer_alloc(BUSY_TIMER);
m_videoram = &space(0);
m_charset = region();
m_current_color = 0x0F;
// Default palette : Black and white
palette[0] = rgb_t(0, 0, 0);
for( i = 1; i < 16 ; i++ )
{
palette[i] = rgb_t(255, 255, 255);
}
m_screen_out.allocate(496, m_screen->height());
save_item(NAME(m_border));
@ -162,7 +185,7 @@ void ef9365_device::draw_character( unsigned char c )
{
int x_char,y_char;
int char_base,char_pix;
unsigned int x, y;
unsigned int x, y, p;
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]);
@ -182,17 +205,13 @@ void ef9365_device::draw_character( unsigned char c )
{
if ( m_charset->u8(char_base + (char_pix>>3) ) & ( 0x80 >> (char_pix&7)))
{
if( m_current_color & 0x01)
m_videoram->write_byte ( 0x0000 + ((((y_char+y)*256) + (x_char+x))>>3), m_videoram->read_byte( 0x0000 + ((((y_char+y)*256) + (x_char+x))>>3)) | (0x80 >> ((((y_char+y)*256) + (x_char+x))&7) ) );
if( m_current_color & 0x02)
m_videoram->write_byte ( 0x2000 + ((((y_char+y)*256) + (x_char+x))>>3), m_videoram->read_byte( 0x2000 + ((((y_char+y)*256) + (x_char+x))>>3)) | (0x80 >> ((((y_char+y)*256) + (x_char+x))&7) ) );
if( m_current_color & 0x04)
m_videoram->write_byte ( 0x4000 + ((((y_char+y)*256) + (x_char+x))>>3), m_videoram->read_byte( 0x4000 + ((((y_char+y)*256) + (x_char+x))>>3)) | (0x80 >> ((((y_char+y)*256) + (x_char+x))&7) ) );
if( m_current_color & 0x08)
m_videoram->write_byte ( 0x6000 + ((((y_char+y)*256) + (x_char+x))>>3), m_videoram->read_byte( 0x6000 + ((((y_char+y)*256) + (x_char+x))>>3)) | (0x80 >> ((((y_char+y)*256) + (x_char+x))&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++;
@ -207,6 +226,41 @@ void ef9365_device::draw_character( unsigned char c )
}
}
void ef9365_device::screen_scanning( int force_clear )
{
int x,y,p;
if( (m_registers[EF9365_REG_CTRL1] & 0x02) && !force_clear )
{
for( y = 0; y < 256; y++ )
{
for( x = 0; x < 256; x++ )
{
for( p = 0 ; p < 4 ; p++ )
{
if( m_current_color & (0x01 << p) )
m_videoram->write_byte ( (0x2000*p) + (((y*256) + x)>>3), m_videoram->read_byte( (0x2000*p) + (((y*256) + x)>>3)) | (0x80 >> (((y*256) + x)&7) ) );
else
m_videoram->write_byte ( (0x2000*p) + (((y*256) + x)>>3), m_videoram->read_byte( (0x2000*p) + (((y*256) + x)>>3)) & ~(0x80 >> (((y*256) + x)&7) ) );
}
}
}
}
else
{
for( y = 0; y < 256; y++)
{
for( x = 0; x < 256; x++)
{
for( p = 0 ; p < 4 ; p++ )
{
m_videoram->write_byte ( (0x2000*p) + (((y*256) + x)>>3), m_videoram->read_byte( (0x2000*p) + (((y*256) + x)>>3)) & ~(0x80 >> (((y*256) + x)&7) ) );
}
}
}
}
}
// Execute EF9365 command
void ef9365_device::ef9365_exec(UINT8 cmd)
{
@ -246,6 +300,7 @@ void ef9365_device::ef9365_exec(UINT8 cmd)
#ifdef DBGMODE
printf("Clear screen\n");
#endif
screen_scanning(1);
break;
case 0x5: // X and Y registers reset to 0
#ifdef DBGMODE
@ -271,6 +326,7 @@ void ef9365_device::ef9365_exec(UINT8 cmd)
#ifdef DBGMODE
printf("Clear screen, set CSIZE to code \"minsize\". All other registers reset to 0\n");
#endif
screen_scanning(1);
break;
case 0x8: // Light-pen initialization (/White forced low)
#ifdef DBGMODE
@ -296,6 +352,7 @@ void ef9365_device::ef9365_exec(UINT8 cmd)
#ifdef DBGMODE
printf("Screen scanning : pen or Eraser as defined by CTRL1\n");
#endif
screen_scanning(0);
break;
case 0xD: // X reset to 0
#ifdef DBGMODE
@ -368,37 +425,36 @@ void ef9365_device::ef9365_exec(UINT8 cmd)
UINT32 ef9365_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
int i,j,k;
unsigned long r,v,b;
unsigned char color_index;
k = 0;
for(i=0;i<256;i++)
{
for(j=0;j<256;j++)
{
r = v = b = 0;
color_index = 0x00;
if( m_videoram->read_byte(0x0000 + (k>>3)) & (0x80>>(k&7)))
{
b = 0xFF;
color_index |= 0x01;
}
if( m_videoram->read_byte(0x2000 + (k>>3)) & (0x80>>(k&7)))
{
v = 0xFF;
color_index |= 0x02;
}
if( m_videoram->read_byte(0x4000 + (k>>3)) & (0x80>>(k&7)))
{
r = 0xFF;
color_index |= 0x04;
}
if( m_videoram->read_byte(0x6000 + (k>>3)) & (0x80>>(k&7)))
{
r = r / 2;
v = v / 2;
b = b / 2;
color_index |= 0x08;
}
m_screen_out.pix32(i, j) = ( r<<16 ) | ( v<<8 ) | b;
m_screen_out.pix32(i, j) = palette[ color_index&0xF ];
k++;
}

6
src/devices/video/ef9365.h
View File

@ -40,6 +40,7 @@ public:
void update_scanline(UINT16 scanline);
void static_set_color_filler( UINT8 color );
void static_set_color_entry( int index, UINT8 r, UINT8 g, UINT8 b );
UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
protected:
@ -58,6 +59,7 @@ protected:
private:
void draw_character( unsigned char c );
void screen_scanning( int force_clear );
void set_busy_flag(int period);
void set_video_mode(void);
void draw_border(UINT16 line);
@ -74,6 +76,7 @@ private:
UINT8 m_registers[0x10]; //registers
UINT8 m_state; //status register
UINT8 m_border[80]; //border color
rgb_t palette[16];
bitmap_rgb32 m_screen_out;
@ -100,7 +103,4 @@ extern const device_type EF9365;
#define EF9365_REG_XLP 0x0C
#define EF9365_REG_YLP 0x0D
#define EF9365_REG_CTRL1 0x01
#define EF9365_REG_CTRL1 0x01
#endif