Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-27 18:53:05 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

compmahj: 2.5mhz resonator (nw)

Browse Source
This commit is contained in:
hap 2020-02-23 23:49:24 +01:00
parent cc2e5ec892
commit 953ce07fda
1 changed files with 14 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/mame/drivers/compmahj.cpp
View File

@ -9,7 +9,7 @@ Skeleton driver for Nintendo Computer Mahjong
MJ-CPU: MJ-01, MJ-02, MJ-04, 2*MJ-03
MJ-DR: 2*MJ-06, MJ-05
MJ-01 is definitely a Sharp LH5801 or LH5803 (?MHz). I'm not sure of the
MJ-01 is definitely a Sharp LH5801 or LH5803. I'm not sure of the
difference; the pinouts are the same. The PC-1600 Technical Reference says
LH-5803 is an "upper" version of LH-5801 that supports most of the same
machine language instructions except SDP, RDP and OFF are NOPs.
@ -30,8 +30,8 @@ MJ-06 is QFP96 and is likely LH5035A/LH5036A LCD dot matrix segment driver.
LCD display: 1st and 3rd row is 20 8*11-pixel characters. 2nd row is 19
8*10-pixel characters, and a couple of custom segments to the right.
20 buttons, 3-pos switch. There's a 12-pin connector for linking 2
Computer Mahjongs together, using MJ 8002 link cable.
Piezo speaker, 20 buttons, 3-pos switch. There's a 12-pin connector for
linking 2 Computer Mahjongs together, using MJ 8002 link cable.
****************************************************************************/
@ -53,8 +53,16 @@ private:
void io_map(address_map &map);
required_device<lh5801_cpu_device> m_maincpu;
DECLARE_READ8_MEMBER(ita_r);
};
READ8_MEMBER(compmahj_state::ita_r)
{
// f75e/f760
return 0;
}
void compmahj_state::main_map(address_map &map)
{
map(0x8000, 0x80ff).ram();
@ -70,14 +78,15 @@ INPUT_PORTS_END
void compmahj_state::compmahj(machine_config &config)
{
LH5801(config, m_maincpu, 1000000); // total guess
LH5801(config, m_maincpu, 2.5_MHz_XTAL);
m_maincpu->set_addrmap(AS_PROGRAM, &compmahj_state::main_map);
m_maincpu->set_addrmap(AS_IO, &compmahj_state::io_map);
m_maincpu->in_func().set(FUNC(compmahj_state::ita_r));
}
ROM_START( compmahj )
ROM_REGION( 0x2000, "maincpu", 0)
ROM_LOAD( "mj02.bin", 0x0000, 0x2000, CRC(56d51944) SHA1(5923d72753642314f1e64bd30a6bd69da3985ce9) )
ROM_LOAD( "mj-02", 0x0000, 0x2000, CRC(56d51944) SHA1(5923d72753642314f1e64bd30a6bd69da3985ce9) )
ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */