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sx1000: speculative devices

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This commit is contained in:
Patrick Mackinlay 2021-07-14 17:57:45 +07:00
parent 6a4e6bbbb4
commit 10f7e19aaf
1 changed files with 36 additions and 24 deletions
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60
src/mame/drivers/sx1000.cpp
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@ -39,6 +39,7 @@
// memory
#include "machine/ram.h"
#include "machine/nvram.h"
// various hardware
#include "machine/i8251.h"
@ -48,6 +49,7 @@
// video
#include "screen.h"
#include "video/mc6845.h"
//#include "video/hd63484.h"
// busses and connectors
@ -67,6 +69,9 @@ public:
: driver_device(mconfig, type, tag)
, m_cpu(*this, "cpu")
, m_ram(*this, "ram")
, m_pic(*this, "pic")
, m_screen(*this, "screen")
, m_crtc(*this, "crtc")
{
}
@ -82,15 +87,16 @@ protected:
void common(machine_config &config);
private:
MC6845_UPDATE_ROW(crtc_update_row) {}
// devices
required_device<m68010_device> m_cpu;
required_device<ram_device> m_ram;
u8 m_reg_sel;
required_device<pic8259_device> m_pic;
void reg_sel_w(u8 data);
u8 reg_r();
void reg_w(u8 data);
required_device<screen_device> m_screen;
required_device<hd6345_device> m_crtc;
};
void sx1000_state::machine_start()
@ -111,26 +117,13 @@ void sx1000_state::cpu_map(address_map &map)
map(0xf00000, 0xf07fff).rom().region("eprom", 0x8000);
map(0xf08000, 0xf0ffff).rom().region("eprom", 0x0000);
map(0xf13801, 0xf13801).w(FUNC(sx1000_state::reg_sel_w));
map(0xf13901, 0xf13901).rw(FUNC(sx1000_state::reg_r), FUNC(sx1000_state::reg_w));
map(0xf20000, 0xf23fff).ram(); // Likely nvram
}
void sx1000_state::reg_sel_w(u8 data)
{
m_reg_sel = data;
}
void sx1000_state::reg_w(u8 data)
{
logerror("reg[%02x] = %02x (%s)\n", m_reg_sel, data, machine().describe_context());
}
u8 sx1000_state::reg_r()
{
logerror("reg read %02x (%s)\n", m_reg_sel, machine().describe_context());
return 0x00;
map(0xf13801, 0xf13801).w(m_crtc, FUNC(hd6345_device::address_w));
map(0xf13901, 0xf13901).rw(m_crtc, FUNC(hd6345_device::register_r), FUNC(hd6345_device::register_w));
map(0xf14001, 0xf14001).lrw8([this]() { return m_pic->read(0); }, "pic_r0", [this](u8 data) { m_pic->write(0, data); }, "pic_w0");
map(0xf14101, 0xf14101).lrw8([this]() { return m_pic->read(1); }, "pic_r1", [this](u8 data) { m_pic->write(1, data); }, "pic_w1");
map(0xf20000, 0xf23fff).ram().share("nvram");
}
void sx1000_state::common(machine_config &config)
@ -141,6 +134,25 @@ void sx1000_state::common(machine_config &config)
// 36 x D41256C-15 (256Kb DRAM) on CPU board
RAM(config, m_ram);
m_ram->set_default_size("1M");
NVRAM(config, "nvram");
PIC8259(config, m_pic);
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_raw(48'800'000, 80*16, 0, 80*16, 25*16, 0, 25*16);
m_screen->set_screen_update(m_crtc, FUNC(hd6345_device::screen_update));
// htotal = 117
// hdisp = 80
// vtotal = 26
// vdisp = 25
// mrast = 15
HD6345(config, m_crtc, 4'000'000);
m_crtc->set_screen(m_screen);
m_crtc->set_update_row_callback(FUNC(sx1000_state::crtc_update_row));
m_crtc->out_vsync_callback().set(m_pic, FUNC(pic8259_device::ir5_w));
m_crtc->set_hpixels_per_column(16);
}
void sx1000_state::sx1010(machine_config &config)