void laser3k_state::text_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow)
{
int row, col;
UINT32 start_address;
UINT32 address;
UINT8 *m_a2_videoram = m_ram->pointer();
if (m_80col)
{
start_address = (m_disp_page == 0) ? 0x1000 : 0x1800;
}
else
{
start_address = (m_disp_page == 0) ? 0x400 : 0x800;
}
m_flash = ((machine().time() * 4).seconds() & 1) ? 1 : 0;
beginrow = MAX(beginrow, cliprect.min_y - (cliprect.min_y % 8));
endrow = MIN(endrow, cliprect.max_y - (cliprect.max_y % 8) + 7);
for (row = beginrow; row <= endrow; row += 8)
{
if (m_80col)
{
for (col = 0; col < 40; col++)
{
/* calculate address */
address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col));
plot_text_character(bitmap, col * 7, row, 1, m_a2_videoram[address],
memregion("gfx1")->base(), memregion("gfx1")->bytes());
plot_text_character(bitmap, (col + 40) * 7, row, 1, m_a2_videoram[address+0x400],
memregion("gfx1")->base(), memregion("gfx1")->bytes());
}
}
else
{
for (col = 0; col < 40; col++)
{
/* calculate address */
address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col));
plot_text_character(bitmap, col * 14, row, 2, m_a2_videoram[address],
memregion("gfx1")->base(), memregion("gfx1")->bytes());
}
}
}
}
void agat7video_device::text_update_hires(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow)
{
int row, col;
uint32_t address;
uint8_t ch;
int fg, bg;
beginrow = std::max(beginrow, cliprect.min_y - (cliprect.min_y % 8));
endrow = std::min(endrow, cliprect.max_y - (cliprect.max_y % 8) + 7);
if (m_start_address & 0x800) {
fg = 7; bg = 0;
} else {
fg = 0; bg = 7;
}
for (row = beginrow; row <= endrow; row += 8)
{
for (col = 0; col < 64; col++)
{
/* calculate address */
address = m_start_address + col + (row * 8);
ch = m_ram_dev->read(address);
plot_text_character(bitmap, col * 8, row, 1, ch, m_char_ptr, m_char_size, fg, bg);
}
}
}
void agat7video_device::text_update_lores(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow)
{
int row, col;
uint32_t address;
uint8_t ch, attr;
int fg = 0;
int bg = 0;
beginrow = std::max(beginrow, cliprect.min_y - (cliprect.min_y % 8));
endrow = std::min(endrow, cliprect.max_y - (cliprect.max_y % 8) + 7);
for (row = beginrow; row <= endrow; row += 8)
{
for (col = 0; col < 32; col++)
{
/* calculate address */
address = m_start_address + (col * 2) + (row * 8);
ch = m_ram_dev->read(address);
attr = m_ram_dev->read(address + 1);
if (BIT(attr, 5)) {
fg = BITSWAP8(attr,7,6,5,3,4,2,1,0) & 15;
bg = 0;
} else {
fg = 0;
bg = BITSWAP8(attr,7,6,5,3,4,2,1,0) & 15;
}
plot_text_character(bitmap, col * 16, row, 2, ch, m_char_ptr, m_char_size, fg, bg);
}
}
}
