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sx1000: hook up font ram

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This commit is contained in:
Patrick Mackinlay 2021-07-15 15:32:19 +07:00
parent ad8c8e53eb
commit e427fcb04c
1 changed files with 18 additions and 7 deletions
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25
src/mame/drivers/sx1000.cpp
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@ -78,6 +78,7 @@ public:
, m_acrtc(*this, "acrtc")
, m_serial1(*this, "i8251_1")
, m_serial2(*this, "i8251_2")
, m_fontram(*this, "fontram")
, m_sw2(*this, "SW2")
{
}
@ -90,6 +91,7 @@ protected:
virtual void machine_reset() override;
void cpu_map(address_map &map);
void acrtc_map(address_map &map);
void common(machine_config &config);
@ -110,6 +112,8 @@ private:
required_device<i8251_device> m_serial1;
required_device<i8251_device> m_serial2;
required_shared_ptr<u16> m_fontram;
required_ioport m_sw2;
u16 f14000_r();
};
@ -157,6 +161,13 @@ void sx1000_state::cpu_map(address_map &map)
map(0xf28000, 0xf28001).lrw16([this]() { return m_acrtc->read16(0); }, "acrtc_status_r", [this](u16 data) { m_acrtc->write16(0, data); }, "acrtc_address_w");
map(0xf28100, 0xf28101).lrw16([this]() { return m_acrtc->read16(1); }, "acrtc_data_r", [this](u16 data) { m_acrtc->write16(1, data); }, "acrtc_data_w");
map(0xf2e000, 0xf2ffff).ram().share(m_fontram);
}
void sx1000_state::acrtc_map(address_map &map)
{
map(0x00000, 0x3ffff).ram();
}
u16 sx1000_state::f14000_r()
@ -171,15 +182,12 @@ u16 sx1000_state::f14000_r()
MC6845_UPDATE_ROW( sx1000_state::crtc_update_row )
{
// logerror("ma=%x ra=%d y=%d x_count=%d cursor_x=%d de=%d hbp=%d vbp=%d\n", ma*2, ra, y, x_count, cursor_x, de, hbp, vbp);
const u16 *charset = reinterpret_cast<const u16 *>(m_eprom->base() + 0x5c40);
// logerror("ma=%x ra=%d y=%d x_count=%d cursor_x=%d de=%d hbp=%d vbp=%d\n", ma*2, ra, y, x_count, cursor_x, de, hbp, vbp);
const u16 *vram = m_vram + ma;
u32 *dest = &bitmap.pix(y);
for(u32 x0 = 0; x0 != x_count; x0 ++) {
u16 data = *vram++;
u16 bitmap = charset[((data & 0xff) << 3) | (ra >> 1)];
if(!(ra & 1))
bitmap >>= 8;
u16 const data = *vram++;
u16 const bitmap = m_fontram[((data & 0xff) << 4) | (ra)];
for(u32 x1 = 0; x1 != 8; x1 ++) {
u32 color = BIT(bitmap, 7-x1) ? 0xffffff : 0x000000;
*dest ++ = color;
@ -213,7 +221,7 @@ void sx1000_state::common(machine_config &config)
RAM(config, m_ram);
m_ram->set_default_size("1M");
// NVRAM(config, "nvram");
// NVRAM(config, "nvram");
PIC8259(config, m_pic);
@ -235,6 +243,9 @@ void sx1000_state::common(machine_config &config)
HD63484(config, m_acrtc, 8'000'000);
m_acrtc->set_screen(m_screen);
// FIXME: don't let the acrtc reconfigure the screen because it's currently shared
m_acrtc->set_auto_configure_screen(false);
m_acrtc->set_addrmap(0, &sx1000_state::acrtc_map);
auto &rs232_1(RS232_PORT(config, "serial1", default_rs232_devices, nullptr));
rs232_1.rxd_handler().set(m_serial1, FUNC(i8251_device::write_rxd));