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/***************************************************************************
* Sharp MZ700
*
* video hardware
*
* Juergen Buchmueller <pullmoll@t-online.de>, Jul 2000
*
* Reference: http://sharpmz.computingmuseum.com
*
***************************************************************************/
#include "emu.h"
#include "machine/pit8253.h"
#include "includes/mz700.h"
#ifndef VERBOSE
#define VERBOSE 1
#endif
#define LOG(N,M,A) \
do { \
if(VERBOSE>=N) \
{ \
if( M ) \
logerror("%11.6f: %-24s",machine.time().as_double(),(char*)M ); \
logerror A; \
} \
} while (0)
void mz_state::palette_init()
{
int i;
machine().colortable = colortable_alloc(machine(), 8);
for (i = 0; i < 8; i++)
colortable_palette_set_color(machine().colortable, i, MAKE_RGB((i & 2) ? 0xff : 0x00, (i & 4) ? 0xff : 0x00, (i & 1) ? 0xff : 0x00));
for (i = 0; i < 256; i++)
{
colortable_entry_set_value(machine().colortable, i*2, i & 7);
colortable_entry_set_value(machine().colortable, i*2+1, (i >> 4) & 7);
}
}
UINT32 mz_state::screen_update_mz700(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
UINT8 *videoram = m_videoram;
int offs;
bitmap.fill(get_black_pen(machine()), cliprect);
for(offs = 0; offs < 40*25; offs++)
{
int sx, sy, code, color;
sy = (offs / 40) * 8;
sx = (offs % 40) * 8;
color = m_colorram[offs];
code = videoram[offs] | (color & 0x80) << 1;
drawgfx_opaque(bitmap, cliprect, machine().gfx[0], code, color, 0, 0, sx, sy);
}
return 0;
}
/***************************************************************************
MZ-800
***************************************************************************/
VIDEO_START_MEMBER(mz_state,mz800)
{
machine().gfx[0]->set_source(m_cgram);
}
UINT32 mz_state::screen_update_mz800(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
UINT8 *videoram = m_videoram;
bitmap.fill(get_black_pen(machine()), cliprect);
if (m_mz700_mode)
return screen_update_mz700(screen, bitmap, cliprect);
else
{
if (m_hires_mode)
{
}
else
{
int x, y;
UINT8 *start_addr = videoram;
for (x = 0; x < 40; x++)
{
for (y = 0; y < 200; y++)
{
bitmap.pix16(y, x * 8 + 0) = BIT(start_addr[x * 8 + y], 0);
bitmap.pix16(y, x * 8 + 1) = BIT(start_addr[x * 8 + y], 1);
bitmap.pix16(y, x * 8 + 2) = BIT(start_addr[x * 8 + y], 2);
bitmap.pix16(y, x * 8 + 3) = BIT(start_addr[x * 8 + y], 3);
bitmap.pix16(y, x * 8 + 4) = BIT(start_addr[x * 8 + y], 4);
bitmap.pix16(y, x * 8 + 5) = BIT(start_addr[x * 8 + y], 5);
bitmap.pix16(y, x * 8 + 6) = BIT(start_addr[x * 8 + y], 6);
bitmap.pix16(y, x * 8 + 7) = BIT(start_addr[x * 8 + y], 7);
}
}
}
return 0;
}
}
/***************************************************************************
CGRAM
***************************************************************************/
WRITE8_MEMBER(mz_state::mz800_cgram_w)
{
m_cgram[offset] = data;
machine().gfx[0]->mark_dirty(offset/8);
}
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