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(MESS) d6800: Better implementation of the speaker, keyclick works now. Changed quickload extension of chip8 files to c8, same as Cosmac VIP.

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Robbbert 2013-05-02 14:21:53 +00:00
parent cad69fe987
commit 9d51f048cc
1 changed files with 11 additions and 9 deletions
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20
src/mess/drivers/d6800.c
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@ -43,7 +43,6 @@
#include "imagedev/cassette.h" #include "imagedev/cassette.h"
#include "imagedev/snapquik.h" #include "imagedev/snapquik.h"
#include "sound/wave.h" #include "sound/wave.h"
#include "sound/dac.h"
#include "machine/6821pia.h" #include "machine/6821pia.h"
@ -55,7 +54,7 @@ public:
m_maincpu(*this, "maincpu"), m_maincpu(*this, "maincpu"),
m_cass(*this, "cassette"), m_cass(*this, "cassette"),
m_pia(*this, "pia"), m_pia(*this, "pia"),
m_dac(*this, "dac"), m_beeper(*this, "beeper"),
m_videoram(*this, "videoram"), m_videoram(*this, "videoram"),
m_io_x0(*this, "X0"), m_io_x0(*this, "X0"),
m_io_x1(*this, "X1"), m_io_x1(*this, "X1"),
@ -82,7 +81,7 @@ protected:
required_device<cpu_device> m_maincpu; required_device<cpu_device> m_maincpu;
required_device<cassette_image_device> m_cass; required_device<cassette_image_device> m_cass;
required_device<pia6821_device> m_pia; required_device<pia6821_device> m_pia;
required_device<dac_device> m_dac; required_device<beep_device> m_beeper;
required_shared_ptr<UINT8> m_videoram; required_shared_ptr<UINT8> m_videoram;
required_ioport m_io_x0; required_ioport m_io_x0;
required_ioport m_io_x1; required_ioport m_io_x1;
@ -249,14 +248,15 @@ READ8_MEMBER( d6800_state::d6800_cassette_r )
WRITE8_MEMBER( d6800_state::d6800_cassette_w ) WRITE8_MEMBER( d6800_state::d6800_cassette_w )
{ {
/* /*
Cassette circuit consists of a 566 and a transistor. The 556 runs at 2400 A NE556 runs at either 1200 or 2400 Hz, depending on the state of bit 0.
or 1200 Hz depending on the state of the transistor. This is controlled by This output drives the speaker and the output signal to the cassette player.
bit 0 of the PIA. Bit 6 drives the speaker. Bit 6 enables the speaker.
*/ */
m_cass->output(BIT(data, 0) ? -1.0 : +1.0); m_cass->output(BIT(data, 0) ? -1.0 : +1.0);
m_beeper->set_frequency(BIT(data, 0) ? 2400 : 1200);
m_beeper->set_state(BIT(data, 6));
m_dac->write_unsigned8(data);
m_portb = data; m_portb = data;
} }
@ -321,6 +321,7 @@ void d6800_state::machine_start()
void d6800_state::machine_reset() void d6800_state::machine_reset()
{ {
m_beeper->set_state(0);
} }
/* Machine Drivers */ /* Machine Drivers */
@ -401,7 +402,7 @@ static MACHINE_CONFIG_START( d6800, d6800_state )
MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette") MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_ADD("dac", DAC, 0) MCFG_SOUND_ADD("beeper", BEEP, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
/* devices */ /* devices */
@ -410,7 +411,7 @@ static MACHINE_CONFIG_START( d6800, d6800_state )
MCFG_TIMER_DRIVER_ADD_PERIODIC("d6800_p", d6800_state, d6800_p, attotime::from_hz(40000)) MCFG_TIMER_DRIVER_ADD_PERIODIC("d6800_p", d6800_state, d6800_p, attotime::from_hz(40000))
/* quickload */ /* quickload */
MCFG_QUICKLOAD_ADD("quickload", d6800_state, d6800, "ch8", 1) MCFG_QUICKLOAD_ADD("quickload", d6800_state, d6800, "c8", 1)
MACHINE_CONFIG_END MACHINE_CONFIG_END
/* ROMs */ /* ROMs */
@ -418,6 +419,7 @@ MACHINE_CONFIG_END
ROM_START( d6800 ) ROM_START( d6800 )
ROM_REGION( 0x10000, "maincpu", 0 ) ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "d6800.bin", 0xc000, 0x0400, CRC(3f97ca2e) SHA1(60f26e57a058262b30befceceab4363a5d65d877) ) ROM_LOAD( "d6800.bin", 0xc000, 0x0400, CRC(3f97ca2e) SHA1(60f26e57a058262b30befceceab4363a5d65d877) )
//ROM_FILL(0xc2eb,2,1)
ROM_END ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */