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vp60: CRTC parameters found (nw)

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This commit is contained in:
AJR 2018-08-22 19:57:40 -04:00
parent 0fe073225c
commit 0b536b9446
1 changed files with 35 additions and 14 deletions
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49
src/mame/drivers/vp60.cpp
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@ -11,7 +11,7 @@ No significant progress can be made until the 8051 has its internal ROM dumped.
#include "cpu/mcs48/mcs48.h" #include "cpu/mcs48/mcs48.h"
#include "cpu/mcs51/mcs51.h" #include "cpu/mcs51/mcs51.h"
//#include "machine/er2055.h" //#include "machine/er2055.h"
//#include "video/i8275.h" #include "video/i8275.h"
#include "screen.h" #include "screen.h"
class vp60_state : public driver_device class vp60_state : public driver_device
@ -20,25 +20,38 @@ public:
vp60_state(const machine_config &mconfig, device_type type, const char *tag) vp60_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) : driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu") , m_maincpu(*this, "maincpu")
, m_crtc(*this, "crtc")
, m_p_chargen(*this, "chargen") , m_p_chargen(*this, "chargen")
{ } { }
void vp60(machine_config &config); void vp60(machine_config &config);
private: private:
u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); I8275_DRAW_CHARACTER_MEMBER(draw_character);
DECLARE_READ8_MEMBER(crtc_r);
DECLARE_WRITE8_MEMBER(crtc_w);
void io_map(address_map &map); void io_map(address_map &map);
void kbd_map(address_map &map); void kbd_map(address_map &map);
void mem_map(address_map &map); void mem_map(address_map &map);
required_device<cpu_device> m_maincpu; required_device<cpu_device> m_maincpu;
required_device<i8275_device> m_crtc;
required_region_ptr<u8> m_p_chargen; required_region_ptr<u8> m_p_chargen;
}; };
u32 vp60_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) I8275_DRAW_CHARACTER_MEMBER(vp60_state::draw_character)
{ {
return 0; }
READ8_MEMBER(vp60_state::crtc_r)
{
return m_crtc->read(space, offset >> 8);
}
WRITE8_MEMBER(vp60_state::crtc_w)
{
m_crtc->write(space, offset >> 8, data);
} }
void vp60_state::mem_map(address_map &map) void vp60_state::mem_map(address_map &map)
@ -49,6 +62,7 @@ void vp60_state::mem_map(address_map &map)
void vp60_state::io_map(address_map &map) void vp60_state::io_map(address_map &map)
{ {
map(0x8000, 0x87ff).ram(); map(0x8000, 0x87ff).ram();
map(0xc000, 0xc000).select(0x100).rw(FUNC(vp60_state::crtc_r), FUNC(vp60_state::crtc_w));
} }
void vp60_state::kbd_map(address_map &map) void vp60_state::kbd_map(address_map &map)
@ -59,18 +73,25 @@ void vp60_state::kbd_map(address_map &map)
static INPUT_PORTS_START( vp60 ) static INPUT_PORTS_START( vp60 )
INPUT_PORTS_END INPUT_PORTS_END
MACHINE_CONFIG_START(vp60_state::vp60) void vp60_state::vp60(machine_config &config)
MCFG_DEVICE_ADD("maincpu", I8051, XTAL(10'920'000)) {
MCFG_DEVICE_PROGRAM_MAP(mem_map) I8051(config, m_maincpu, 10.92_MHz_XTAL);
MCFG_DEVICE_IO_MAP(io_map) m_maincpu->set_addrmap(AS_PROGRAM, &vp60_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &vp60_state::io_map);
MCFG_SCREEN_ADD("screen", RASTER) screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
MCFG_SCREEN_RAW_PARAMS(XTAL(25'920'000), 1350, 0, 1056, 320, 0, 300) // dimensions guessed screen.set_raw(25.92_MHz_XTAL, 1600, 0, 1280, 270, 0, 250);
MCFG_SCREEN_UPDATE_DRIVER(vp60_state, screen_update) //screen.set_raw(25.92_MHz_XTAL, 1632, 0, 1280, 319, 0, 275);
screen.set_screen_update("crtc", FUNC(i8275_device::screen_update));
MCFG_DEVICE_ADD("kbdcpu", I8035, XTAL(3'579'545)) // 48-300-010 XTAL I8275(config, m_crtc, 25.92_MHz_XTAL / 16);
MCFG_DEVICE_PROGRAM_MAP(kbd_map) m_crtc->set_character_width(16);
MACHINE_CONFIG_END m_crtc->set_display_callback(FUNC(vp60_state::draw_character), this);
m_crtc->set_screen("screen");
i8035_device &kbdcpu(I8035(config, "kbdcpu", 3.579545_MHz_XTAL)); // 48-300-010 XTAL
kbdcpu.set_addrmap(AS_PROGRAM, &vp60_state::kbd_map);
}
/************************************************************************************************************** /**************************************************************************************************************