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stmpc: Add RAM and preliminary AVDC hookup

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This commit is contained in:
AJR 2023-01-17 16:04:48 -05:00
parent 701898d841
commit 4de31201cf
1 changed files with 34 additions and 3 deletions
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37
src/mame/stm/stmpc.cpp
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@ -28,6 +28,8 @@
#include "emu.h"
#include "cpu/i86/i186.h"
#include "machine/clock.h"
#include "video/scn2674.h"
#include "emupal.h"
#include "screen.h"
@ -43,8 +45,9 @@ class stmpc_state : public driver_device
{
public:
stmpc_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu")
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_avdc(*this, "avdc")
{ }
void stmpc(machine_config &config);
@ -54,10 +57,14 @@ protected:
virtual void machine_reset() override;
private:
required_device<i80186_cpu_device> m_maincpu;
SCN2674_DRAW_CHARACTER_MEMBER(draw_character);
void mem_map(address_map &map);
void io_map(address_map &map);
void char_map(address_map &map);
required_device<i80186_cpu_device> m_maincpu;
required_device<scn2674_device> m_avdc;
};
@ -67,11 +74,19 @@ private:
void stmpc_state::mem_map(address_map &map)
{
map(0x00000, 0x3ffff).ram();
map(0xb8000, 0xbffff).ram();
map(0xfc000, 0xfffff).rom().region("maincpu", 0);
}
void stmpc_state::io_map(address_map &map)
{
map(0x0700, 0x070f).rw(m_avdc, FUNC(scn2674_device::read), FUNC(scn2674_device::write)).umask16(0x00ff);
}
void stmpc_state::char_map(address_map &map)
{
map(0x0000, 0xffff).nopr();
}
@ -131,6 +146,10 @@ static GFXDECODE_START(chars)
GFXDECODE_ENTRY("chargen", 0, char_layout_8x14, 0, 1)
GFXDECODE_END
SCN2674_DRAW_CHARACTER_MEMBER(stmpc_state::draw_character)
{
}
//**************************************************************************
// MACHINE EMULATION
@ -158,6 +177,18 @@ void stmpc_state::stmpc(machine_config &config)
PALETTE(config, "palette", palette_device::MONOCHROME);
GFXDECODE(config, "gfxdecode", "palette", chars);
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD));
screen.set_raw(16000000, 1344, 0, 1280, 113, 0, 104);
screen.set_screen_update(m_avdc, FUNC(scn2674_device::screen_update));
CLOCK(config, "tmrin1", 20000).signal_handler().set(m_maincpu, FUNC(i80186_cpu_device::tmrin1_w)); // FIXME: figure out the actual source of this
SCN2674(config, m_avdc, 16000000 / 8);
m_avdc->set_screen("screen");
m_avdc->set_character_width(8);
m_avdc->set_addrmap(0, &stmpc_state::char_map);
m_avdc->set_display_callback(FUNC(stmpc_state::draw_character));
}