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pcxt: fix tetriskr drawing and add sound

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This commit is contained in:
cracyc 2021-06-13 10:25:47 -05:00
parent d6e5b1034b
commit 1482fbabc4
1 changed files with 17 additions and 17 deletions
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28
src/mame/drivers/pcxt.cpp
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@ -163,6 +163,7 @@ public:
uint8_t bg_bank_r();
void bg_bank_w(uint8_t data);
private:
required_region_ptr<uint8_t> m_bg;
uint8_t m_bg_bank;
};
@ -175,7 +176,8 @@ DEFINE_DEVICE_TYPE(ISA8_CGA_TETRISKR, isa8_cga_tetriskr_device, "tetriskr_cga",
//-------------------------------------------------
isa8_cga_tetriskr_device::isa8_cga_tetriskr_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
isa8_cga_superimpose_device(mconfig, ISA8_CGA_TETRISKR, tag, owner, clock)
isa8_cga_superimpose_device(mconfig, ISA8_CGA_TETRISKR, tag, owner, clock),
m_bg(*this, "gfx2")
{
}
@ -200,29 +202,24 @@ uint8_t isa8_cga_tetriskr_device::bg_bank_r()
uint32_t isa8_cga_tetriskr_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
uint8_t const *const bg_rom = memregion("gfx2")->base();
//popmessage("%04x",m_start_offs);
bitmap.fill(rgb_t::black(), cliprect);
for(int y=0;y<200/8;y++)
for(int y=cliprect.min_y;y<=cliprect.max_y;y++)
{
for(int yi=0;yi<8;yi++)
{
for(int x=0;x<320/8;x++)
{
for(int xi=0;xi<8;xi++)
int yi = y % 8;
int yj = y / 8;
for(int x=cliprect.min_x;x<=cliprect.max_x;x++)
{
int xi = x % 8;
int xj = x / 8;
uint8_t color = 0;
/* TODO: first byte seems bogus? */
for(int pen_i = 0;pen_i<4;pen_i++)
color |= ((bg_rom[y*320/8+x+(pen_i*0x20000)+yi*0x400+m_bg_bank*0x2000+1] >> (7-xi)) & 1) << pen_i;
color |= ((m_bg[yj*320/8+xj+(pen_i*0x20000)+yi*0x400+m_bg_bank*0x2000+1] >> (7-xi)) & 1) << pen_i;
if(cliprect.contains(x*8+xi, y*8+yi))
bitmap.pix(y*8+yi, x*8+xi) = m_palette->pen(color);
}
}
bitmap.pix(y, x) = m_palette->pen(color);
}
}
@ -420,6 +417,9 @@ void pcxt_state::tetriskr_io(address_map &map)
{
map.global_mask(0x3ff);
map(0x0000, 0x00ff).m(m_mb, FUNC(pc_noppi_mb_device::map));
map(0x0060, 0x0060).r(FUNC(pcxt_state::port_a_r)); //not a real 8255
map(0x0061, 0x0061).rw(FUNC(pcxt_state::port_b_r), FUNC(pcxt_state::port_b_w));
map(0x0062, 0x0062).r(FUNC(pcxt_state::port_c_r));
map(0x03c8, 0x03c8).portr("IN0");
map(0x03c9, 0x03c9).portr("IN1");
// map(0x03ce, 0x03ce).portr("IN1"); //read then discarded?