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pc9801_86: 16bit pcm is big endian (nw)

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This commit is contained in:
cracyc 2018-04-12 16:25:27 -05:00
parent 2e332cd02f
commit 8e315058d0
1 changed files with 10 additions and 10 deletions
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20
src/devices/bus/cbus/pc9801_86.cpp
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@ -63,8 +63,8 @@ MACHINE_CONFIG_START(pc9801_86_device::device_add_mconfig)
MCFG_AY8910_PORT_B_WRITE_CB(WRITE8(pc9801_86_device, opn_portb_w))
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 1.00)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.00)
MCFG_SOUND_ADD("ldac", DAC_16BIT_R2R_TWOS_COMPLEMENT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 1.0) // unknown DAC
MCFG_SOUND_ADD("rdac", DAC_16BIT_R2R_TWOS_COMPLEMENT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.0) // unknown DAC
MCFG_SOUND_ADD("ldac", DAC_16BIT_R2R_TWOS_COMPLEMENT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 1.0) // burr brown pcm61p
MCFG_SOUND_ADD("rdac", DAC_16BIT_R2R_TWOS_COMPLEMENT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.0) // burr brown pcm61p
MCFG_DEVICE_ADD("vref", VOLTAGE_REGULATOR, 0) MCFG_VOLTAGE_REGULATOR_OUTPUT(5.0)
MCFG_SOUND_ROUTE_EX(0, "ldac", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE_EX(0, "ldac", -1.0, DAC_VREF_NEG_INPUT)
MCFG_SOUND_ROUTE_EX(0, "rdac", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE_EX(0, "rdac", -1.0, DAC_VREF_NEG_INPUT)
@ -332,21 +332,21 @@ void pc9801_86_device::device_timer(emu_timer& timer, device_timer_id id, int pa
m_rdac->write(queue_pop() << 8);
break;
case 0x30: // 16bit stereo
lsample = queue_pop();
lsample |= queue_pop() << 8;
rsample = queue_pop();
rsample |= queue_pop() << 8;
lsample = queue_pop() << 8;
lsample |= queue_pop();
rsample = queue_pop() << 8;
rsample |= queue_pop();
m_ldac->write(lsample);
m_rdac->write(rsample);
break;
case 0x20: // 16bit left only
lsample = queue_pop();
lsample |= queue_pop() << 8;
lsample = queue_pop() << 8;
lsample |= queue_pop();
m_ldac->write(lsample);
break;
case 0x10: // 16bit right only
rsample = queue_pop();
rsample |= queue_pop() << 8;
rsample = queue_pop() << 8;
rsample |= queue_pop();
m_rdac->write(rsample);
break;
}