Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-18 22:49:58 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

gamecom: reworked audio channels 0 and 1 a bit (still doesn't sound anything like the real thing)

Browse Source
This commit is contained in:
Robbbert 2016-05-20 23:04:37 +10:00
parent 13d091c38f
commit 2b7764aa4a
3 changed files with 15 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/mame/drivers/gamecom.cpp
View File

@ -8,8 +8,9 @@ Various improvements by Robbbert.
Todo:
- Fix cpu and system problems that prevent the games from working fully.
- RS232 port
- Sound ports 1,2,3 (DAC sound partially works)
- CPU speed can be adjusted by the games.
- Sound ports 1,2 do not sound anything like the real thing
- Sound port 3 (noise channel)
- Sound dac port (mostly works but is the wrong speed in some places)
Game Status:
- Inbuilt ROM and PDA functions all work
@ -272,6 +273,12 @@ static MACHINE_CONFIG_START( gamecom, gamecom_state )
MCFG_SOUND_ADD("dac", DAC, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 1.00)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.00)
MCFG_SOUND_ADD("dac0", DAC, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.10)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.10)
MCFG_SOUND_ADD("dac1", DAC, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.10)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.10)
/* cartridge */
MCFG_GENERIC_CARTSLOT_ADD("cartslot1", generic_linear_slot, "gamecom_cart")

4
src/mame/includes/gamecom.h
View File

@ -218,6 +218,8 @@ public:
, m_p_nvram(*this,"nvram")
, m_maincpu(*this, "maincpu")
, m_dac(*this, "dac")
, m_dac0(*this, "dac0")
, m_dac1(*this, "dac1")
, m_cart1(*this, "cartslot1")
, m_cart2(*this, "cartslot2")
, m_bank1(*this, "bank1")
@ -279,6 +281,8 @@ private:
required_shared_ptr<UINT8> m_p_nvram;
required_device<cpu_device> m_maincpu;
required_device<dac_device> m_dac;
required_device<dac_device> m_dac0;
required_device<dac_device> m_dac1;
required_device<generic_slot_device> m_cart1;
required_device<generic_slot_device> m_cart2;
required_memory_bank m_bank1;

4
src/mame/machine/gamecom.cpp
View File

@ -29,7 +29,7 @@ TIMER_CALLBACK_MEMBER(gamecom_state::gamecom_sound0_timer_callback)
{
bool which_half = BIT(m_sound0_cnt, 0);
UINT8 sb = m_sound.sg0w[m_sound0_cnt >> 1];
m_dac->write_unsigned8((which_half ? sb >> 4 : sb & 15)^8);
m_dac0->write_signed8(which_half ? sb & 0xf0 : sb << 4);
m_sound0_cnt++;
}
}
@ -49,7 +49,7 @@ TIMER_CALLBACK_MEMBER(gamecom_state::gamecom_sound1_timer_callback)
{
bool which_half = BIT(m_sound1_cnt, 0);
UINT8 sb = m_sound.sg1w[m_sound1_cnt >> 1];
m_dac->write_unsigned8((which_half ? sb >> 4 : sb & 15)^8);
m_dac1->write_signed8(which_half ? sb & 0xf0 : sb << 4);
m_sound1_cnt++;
}
}