Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 00:39:36 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

ichiban.cpp: very minor comment updates

Browse Source
This commit is contained in:
Ivan Vangelista 2021-07-20 17:46:53 +02:00
parent 1d106ea414
commit 43543ccccf
1 changed files with 20 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
src/mame/drivers/ichiban.cpp
View File

@ -29,9 +29,12 @@ Notes:
Z80 clock - 6.144MHz [18.432/3]
YM2149 clock - 1.536MHz [18.432/12]
YM2413 clock - 3.072MHz [18.432/6]
M6378 - OKI MSM6378A Voice Synthesis IC with 256Kbit OTP ROM (DIP16) - not populated
VSync - 60.5686Hz
HSync - 15.510kHz
Notes / TODO:
- where and how are the opcodes at 0x8000 and the data at 0x18000 banked?
***************************************************************************/
#include "emu.h"
@ -44,7 +47,7 @@ HSync - 15.510kHz
#include "speaker.h"
#define MAIN_CLOCK XTAL(18'432'000)
namespace {
class ichibanjyan_state : public driver_device
{
@ -56,15 +59,16 @@ public:
void ichibanjyan(machine_config &config);
protected:
// driver_device overrides
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void video_start() override;
private:
// devices
required_device<cpu_device> m_maincpu;
// driver_device overrides
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void video_start() override;
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void mem_map(address_map &map);
void io_map(address_map &map);
@ -132,17 +136,17 @@ void ichibanjyan_state::machine_reset()
void ichibanjyan_state::ichibanjyan(machine_config &config)
{
/* basic machine hardware */
Z80(config, m_maincpu, MAIN_CLOCK/3);
// basic machine hardware
Z80(config, m_maincpu, 18.432_MHz_XTAL / 3);
m_maincpu->set_addrmap(AS_PROGRAM, &ichibanjyan_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &ichibanjyan_state::io_map);
m_maincpu->set_addrmap(AS_OPCODES, &ichibanjyan_state::opcodes_map);
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
/* video hardware */
// video hardware
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_raw(MAIN_CLOCK/3, 396, 0, 320, 256, 0, 224); // dimensions guessed
screen.set_raw(18.432_MHz_XTAL / 3, 396, 0, 320, 256, 0, 224); // dimensions guessed
screen.set_screen_update(FUNC(ichibanjyan_state::screen_update));
screen.set_palette("palette");
@ -150,11 +154,11 @@ void ichibanjyan_state::ichibanjyan(machine_config &config)
PALETTE(config, "palette", palette_device::RGB_444_PROMS, "proms", 512);
/* sound hardware */
// sound hardware
SPEAKER(config, "mono").front_center();
YM2149(config, "aysnd", MAIN_CLOCK/12).add_route(ALL_OUTPUTS, "mono", 0.30);
YM2149(config, "aysnd", 18.432_MHz_XTAL / 12).add_route(ALL_OUTPUTS, "mono", 0.30);
YM2413(config, "ymsnd", MAIN_CLOCK/6).add_route(ALL_OUTPUTS, "mono", 0.5);
YM2413(config, "ymsnd", 18.432_MHz_XTAL / 6).add_route(ALL_OUTPUTS, "mono", 0.5);
}
@ -180,4 +184,7 @@ ROM_START( ichiban )
ROM_LOAD( "mjb.u38", 0x400, 0x200, CRC(0ef881cb) SHA1(44b61a443d683f5cb2d1b1a4f74d8a8f41021de5) )
ROM_END
} // Anonymous namespace
GAME( 199?, ichiban, 0, ichibanjyan, ichibanjyan, ichibanjyan_state, empty_init, ROT0, "Excel", "Ichi Ban Jyan", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )