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-rw-r--r--src/mess/video/dai.c768
1 files changed, 768 insertions, 0 deletions
diff --git a/src/mess/video/dai.c b/src/mess/video/dai.c
new file mode 100644
index 00000000000..75868ac5224
--- /dev/null
+++ b/src/mess/video/dai.c
@@ -0,0 +1,768 @@
+/***************************************************************************
+
+ dai.c
+
+ Functions to emulate the video hardware of DAI.
+
+ Krzysztof Strzecha
+
+ All video modes are emulated but not fully tested yet.
+ SCREEN_UPDATE_IND16 function needs strong cleanup and optimalisation.
+
+
+***************************************************************************/
+
+#include "emu.h"
+#include "includes/dai.h"
+
+#define DEBUG_DAI_VIDEO 0
+
+#define LOG_DAI_VIDEO_LINE(_mode, _unit, _resolution, _repeat, _scan) do { if (DEBUG_DAI_VIDEO) logerror ("Mode: %02x, Unit: %02x, Resolution: %02x, Repeat: %d, Current line: %d\n", _mode, _unit, _resolution, _repeat, _scan); } while (0)
+
+const unsigned char dai_palette[16*3] =
+{
+ 0x00, 0x00, 0x00, /* 0 Black */
+ 0x00, 0x00, 0x8b, /* 1 Dark Blue */
+ 0xb1, 0x00, 0x95, /* 2 Purple Red */
+ 0xff, 0x00, 0x00, /* 3 Red */
+ 0x75, 0x2e, 0x50, /* 4 Purple Brown */
+ 0x00, 0xb2, 0x38, /* 5 Emerald Green */
+ 0x98, 0x62, 0x00, /* 6 Kakhi Brown */
+ 0xae, 0x7a, 0x00, /* 7 Mustard Brown */
+ 0x89, 0x89, 0x89, /* 8 Grey */
+ 0xa1, 0x6f, 0xff, /* 9 Middle Blue */
+ 0xff, 0xa5, 0x00, /* 10 Orange */
+ 0xff, 0x99, 0xff, /* 11 Pink */
+ 0x9e, 0xf4, 0xff, /* 12 Light Blue */
+ 0xb3, 0xff, 0xbb, /* 13 Light Green */
+ 0xff, 0xff, 0x28, /* 14 Light Yellow */
+ 0xff, 0xff, 0xff, /* 15 White */
+};
+
+
+PALETTE_INIT( dai )
+{
+ int i;
+
+ for ( i = 0; i < sizeof(dai_palette) / 3; i++ )
+ {
+ palette_set_color_rgb(machine, i, dai_palette[i * 3], dai_palette[i * 3 + 1], dai_palette[i * 3 + 2]);
+ }
+}
+
+
+VIDEO_START( dai )
+{
+}
+
+SCREEN_UPDATE_IND16( dai )
+{
+ dai_state *state = screen.machine().driver_data<dai_state>();
+ address_space *space = screen.machine().device("maincpu")->memory().space(AS_PROGRAM);
+ int i, j, k, l;
+
+ UINT8* char_rom = state->memregion("gfx1")->base();
+
+ UINT16 dai_video_memory_start = 0xbfff;
+ UINT16 dai_scan_lines = 604; /* scan lines of PAL tv */
+
+ UINT16 current_scan_line = 0;
+ UINT16 current_video_memory_address = dai_video_memory_start;
+
+ UINT8 mode; /* mode byte of line
+ bits 0-3 - line repeat count
+ bits 4-5 - resolution control
+ bits 6-7 - display mode control */
+ UINT8 colour; /* colour byte of line
+ bits 0-3 - one of 16 colours
+ bits 4-5 - colour register for update
+ bit 6 - if unset force 'unit colour mode'
+ bit 7 - enable coulor change
+ if unset bits 0-5 are ignored */
+ UINT8 line_repeat_count; /* number of horizontalraster scans
+ for which same data will be displayed
+ 0000 - 2 lines
+ each additional repeat adds 2 scans */
+ UINT8 horizontal_resolution; /* number of blobs per line
+ 00 - 88 (low resolution graphics)
+ 01 - 176 (medium resolution graphics)
+ 10 - 352 (high resolution graphics)
+ 11 - 528 (text with 66 chars per line) */
+ UINT8 display_mode; /* determine how data will be used
+ to generate the picture
+ 00 - four colour graphics
+ 01 - four colour characters
+ 10 - sixteen colour graphics
+ 11 - sixteen colour characters */
+ UINT8 unit_mode;
+
+ UINT8 current_data_1, current_data_2;
+
+ UINT8 current_colour;
+
+ while (current_scan_line < dai_scan_lines)
+ {
+ mode = space->read_byte(current_video_memory_address--);
+ colour = space->read_byte(current_video_memory_address--);
+ line_repeat_count = mode & 0x0f;
+ horizontal_resolution = (mode & 0x30) >> 4;
+ display_mode = (mode & 0xc0) >> 6;
+ unit_mode = (colour & 0x40) >> 6;
+
+ if (colour & 0x80)
+ state->m_4_colours_palette[(colour & 0x30) >> 4] = colour & 0x0f;
+
+ switch (display_mode)
+ {
+
+ case 0x00: /* 4 colour grahics modes */
+ switch (horizontal_resolution)
+ {
+
+ case 0x00: /* 88 pixels */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+
+ for (i=0; i<11; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_1>>(7-k)) & 0x01)<<1) | ((current_data_2>>(7-k)) & 0x01)];
+ for (l=0; l<12; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*12+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ case 1:
+ for (i=0; i<11; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_1>>(7-k)) & 0x01)<<1) | ((current_data_2>>(7-k)) & 0x01)];
+ for (l=0; l<12; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*12+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+
+ case 0x01: /* 176 pixels */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<22; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_1>>(7-k)) & 0x01)<<1) | ((current_data_2>>(7-k)) & 0x01)];
+ for (l=0; l<6; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*6+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ case 1:
+ for (i=0; i<22; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_1>>(7-k)) & 0x01)<<1) | ((current_data_2>>(7-k)) & 0x01)];
+ for (l=0; l<6; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*6+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+
+ case 0x02: /* 352 pixels */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<44; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_1>>(7-k)) & 0x01)<<1) | ((current_data_2>>(7-k)) & 0x01)];
+ for (l=0; l<3; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*3+l) = current_colour;
+ }
+ }
+ }
+ break;
+ case 1:
+ for (i=0; i<44; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_1>>(7-k)) & 0x01)<<1) | ((current_data_2>>(7-k)) & 0x01)];
+ for (l=0; l<3; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*3+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+
+ case 0x03: /* 528 pixels */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<66; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_1>>(7-k)) & 0x01)<<1) | ((current_data_2>>(7-k)) & 0x01)];
+ for (l=0; l<2; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*2+l) = current_colour;
+ }
+ }
+ }
+ break;
+ case 1:
+ for (i=0; i<66; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_1>>(7-k)) & 0x01)<<1) | ((current_data_2>>(7-k)) & 0x01)];
+ for (l=0; l<2; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*2+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+ }
+ break;
+
+ case 0x01: /* 4 colour characters */
+ switch (horizontal_resolution)
+ {
+
+ case 0x00: /* 11 chars */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address);
+ current_data_2 = space->read_byte(current_video_memory_address-1);
+ current_video_memory_address-=2;
+ for (i=0; i<11; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_2 >> k)&0x01)<<1) | ((char_rom[current_data_1*16+j]>>k) & 0x01)];
+ for (l=0; l<12; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*12+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ case 1:
+ for (i=0; i<11; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address);
+ current_data_2 = space->read_byte(current_video_memory_address-1);
+ current_video_memory_address-=2;
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_2 >> k)&0x01)<<1) | ((char_rom[current_data_1*16+j]>>k) & 0x01)];
+ for (l=0; l<12; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*12+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ }
+ break;
+ case 0x01: /* 22 chars */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address);
+ current_data_2 = space->read_byte(current_video_memory_address-1);
+ current_video_memory_address-=2;
+ for (i=0; i<22; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_2 >> k)&0x01)<<1) | ((char_rom[current_data_1*16+j]>>k) & 0x01)];
+ for (l=0; l<6; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*6+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ case 1:
+ for (i=0; i<22; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address);
+ current_data_2 = space->read_byte(current_video_memory_address-1);
+ current_video_memory_address-=2;
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_2 >> k)&0x01)<<1) | ((char_rom[current_data_1*16+j]>>k) & 0x01)];
+ for (l=0; l<6; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*6+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ }
+ break;
+ case 0x02: /* 44 chars */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address);
+ current_data_2 = space->read_byte(current_video_memory_address-1);
+ current_video_memory_address-=2;
+ for (i=0; i<44; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_2 >> k)&0x01)<<1) | ((char_rom[current_data_1*16+j]>>k) & 0x01)];
+ for (l=0; l<3; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*3+l) = current_colour;
+ }
+ }
+ }
+ break;
+ case 1:
+ for (i=0; i<44; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address);
+ current_data_2 = space->read_byte(current_video_memory_address-1);
+ current_video_memory_address-=2;
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_2 >> k)&0x01)<<1) | ((char_rom[current_data_1*16+j]>>k) & 0x01)];
+ for (l=0; l<3; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*3+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+ case 0x03: /* 66 chars */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address);
+ current_data_2 = space->read_byte(current_video_memory_address-1);
+ current_video_memory_address-=2;
+ for (i=0; i<66; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_2 >> k)&0x01)<<1) | ((char_rom[current_data_1*16+j]>>k) & 0x01)];
+ for (l=0; l<2; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*2+l) = current_colour;
+ }
+ }
+ }
+ break;
+ case 1:
+ for (i=0; i<66; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address);
+ current_data_2 = space->read_byte(current_video_memory_address-1);
+ current_video_memory_address-=2;
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = state->m_4_colours_palette[(((current_data_2 >> k)&0x01)<<1) | ((char_rom[current_data_1*16+j]>>k) & 0x01)];
+ for (l=0; l<2; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*2+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+ }
+ break;
+ case 0x02: /* 16 colour graphics */
+ switch (horizontal_resolution)
+ {
+
+ case 0x00: /* 88 pixels */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+
+ for (i=0; i<11; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((current_data_1>>(7-k)) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<12; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*12+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ case 1:
+ for (i=0; i<11; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((current_data_1>>(7-k)) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<12; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*12+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+
+ case 0x01: /* 176 pixels */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<22; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((current_data_1>>(7-k)) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<6; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*6+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ case 1:
+ for (i=0; i<22; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((current_data_1>>(7-k)) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<6; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*6+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+
+ case 0x02: /* 352 pixels */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<44; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((current_data_1>>(7-k)) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<3; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*3+l) = current_colour;
+ }
+ }
+ }
+ break;
+ case 1:
+ for (i=0; i<44; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((current_data_1>>(7-k)) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<3; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*3+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+
+ case 0x03: /* 528 pixels */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<66; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((current_data_1>>(7-k)) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<2; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*2+l) = current_colour;
+ }
+ }
+ }
+ break;
+ case 1:
+ for (i=0; i<66; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((current_data_1>>(7-k)) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<2; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*2+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+ }
+ break;
+ case 0x03: /* 16 colour characters */
+ switch (horizontal_resolution)
+ {
+
+ case 0x00: /* 11 chars */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<11; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((char_rom[current_data_1*16+j]>>k) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<12; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*12+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ case 1:
+ for (i=0; i<11; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((char_rom[current_data_1*16+j]>>k) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<12; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*12+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ }
+ break;
+ case 0x01: /* 22 chars */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<22; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((char_rom[current_data_1*16+j]>>k) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<6; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*6+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ case 1:
+ for (i=0; i<22; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((char_rom[current_data_1*16+j]>>k) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<6; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*6+l) = current_colour;
+ }
+ }
+ }
+ current_video_memory_address-=2;
+ break;
+ }
+ break;
+ case 0x02: /* 44 chars */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<44; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((char_rom[current_data_1*16+j]>>k) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<3; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*3+l) = current_colour;
+ }
+ }
+ }
+ break;
+ case 1:
+ for (i=0; i<44; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((char_rom[current_data_1*16+j]>>k) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<3; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*3+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+ case 0x03: /* 66 chars */
+ switch (unit_mode)
+ {
+ case 0:
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (i=0; i<66; i++)
+ {
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((char_rom[current_data_1*16+j]>>k) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<2; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*2+l) = current_colour;
+ }
+ }
+ }
+ break;
+ case 1:
+ for (i=0; i<66; i++)
+ {
+ current_data_1 = space->read_byte(current_video_memory_address--);
+ current_data_2 = space->read_byte(current_video_memory_address--);
+ for (j=0; j<=line_repeat_count; j++)
+ {
+ for (k=0; k<8; k++)
+ {
+ current_colour = ((char_rom[current_data_1*16+j]>>k) & 0x01) ? (current_data_2>>4)&0x0f : current_data_2&0x0f;
+ for (l=0; l<2; l++)
+ bitmap.pix16(current_scan_line/2 + j, (i*8+k)*2+l) = current_colour;
+ }
+ }
+ }
+ break;
+ }
+ break;
+ }
+ break;
+ }
+ current_scan_line += line_repeat_count*2+2;
+ LOG_DAI_VIDEO_LINE(display_mode, unit_mode, horizontal_resolution, line_repeat_count, current_scan_line);
+ }
+ return 0;
+}