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vlc34010.cpp: Flesh out driver just enough to keep CPUs from running off rails

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This commit is contained in:
AJR 2021-03-25 19:38:13 -04:00
parent ee3ad3aefc
commit 256e1d6da3
1 changed files with 60 additions and 3 deletions
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63
src/mame/drivers/vlc34010.cpp
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@ -45,6 +45,8 @@ Plugs near the 68EC000
#include "machine/microtch.h"
#include "machine/msm6242.h"
#include "machine/nvram.h"
#include "machine/watchdog.h"
#include "video/bt47x.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
@ -59,28 +61,77 @@ public:
vlc34010_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_tms(*this, "tms")
m_tms(*this, "tms"),
m_duart(*this, "duart%u", 0U),
m_boot_view(*this, "boot")
{ }
void base(machine_config &config);
protected:
virtual void machine_reset() override;
private:
void switch_w(u8 data);
template <int N> u8 duart_r(offs_t offset);
template <int N> void duart_w(offs_t offset, u8 data);
TMS340X0_SCANLINE_RGB32_CB_MEMBER(scanline_update);
required_device<cpu_device> m_maincpu;
required_device<tms34010_device> m_tms;
required_device_array<mc68681_device, 3> m_duart;
memory_view m_boot_view;
void main_map(address_map &map);
void tms_map(address_map &map);
};
void vlc34010_state::machine_reset()
{
m_boot_view.select(0);
}
TMS340X0_SCANLINE_RGB32_CB_MEMBER(vlc34010_state::scanline_update)
{
}
void vlc34010_state::switch_w(u8 data)
{
m_boot_view.select(1);
}
template <int N> u8 vlc34010_state::duart_r(offs_t offset)
{
return m_duart[N]->read(offset >> 4);
}
template <int N> void vlc34010_state::duart_w(offs_t offset, u8 data)
{
m_duart[N]->write(offset >> 4, data);
}
void vlc34010_state::main_map(address_map &map)
{
map(0x000000, 0x1fffff).rom().region("maincpu", 0);
map(0x000000, 0x7fffff).view(m_boot_view);
m_boot_view[0](0x000000, 0x1fffff).rom().region("maincpu", 0);
m_boot_view[1](0x000000, 0x03ffff).ram().mirror(0x7c0000);
map(0xa10001, 0xa10001).r("watchdog", FUNC(watchdog_timer_device::reset_r));
map(0xa70001, 0xa70001).w(FUNC(vlc34010_state::switch_w));
map(0xb10001, 0xb10001).select(0xf0).rw(FUNC(vlc34010_state::duart_r<0>), FUNC(vlc34010_state::duart_w<0>));
map(0xb20001, 0xb20001).select(0xf0).rw(FUNC(vlc34010_state::duart_r<1>), FUNC(vlc34010_state::duart_w<1>));
map(0xb30001, 0xb30001).select(0xf0).rw(FUNC(vlc34010_state::duart_r<2>), FUNC(vlc34010_state::duart_w<2>));
map(0xf00000, 0xffffff).rom().region("maincpu", 0);
}
void vlc34010_state::tms_map(address_map &map)
{
map(0xfff00000, 0xffffffff).rom().region("tms", 0);
map(0x00000000, 0x003fffff).ram();
map(0x02000000, 0x027fffff).ram();
map(0x05000000, 0x0500007f).m("ramdac", FUNC(bt471_device::map)).umask16(0xff00);
map(0xff800000, 0xffffffff).rom().region("tms", 0);
}
static INPUT_PORTS_START( beezerk )
@ -95,6 +146,10 @@ void vlc34010_state::base(machine_config &config)
TMS34010(config, m_tms, 50_MHz_XTAL);
m_tms->set_addrmap(AS_PROGRAM, &vlc34010_state::tms_map);
m_tms->set_scanline_rgb32_callback(FUNC(vlc34010_state::scanline_update));
m_tms->set_pixel_clock(50_MHz_XTAL); // ???
WATCHDOG_TIMER(config, "watchdog");
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); // TODO: all wrong
screen.set_refresh_hz(60);
@ -103,6 +158,8 @@ void vlc34010_state::base(machine_config &config)
screen.set_visarea(0*8, 31*8-1, 0*8, 31*8-1);
screen.set_screen_update(m_tms, FUNC(tms34010_device::tms340x0_rgb32));
BT471(config, "ramdac", 0); // type not correct
MC68681(config, "duart0", 3.6864_MHz_XTAL);
MC68681(config, "duart1", 3.6864_MHz_XTAL);