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author | 2015-11-08 12:56:12 +0100 | |
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committer | 2015-11-08 12:56:12 +0100 | |
commit | 7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch) | |
tree | f310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/devices/bus/a2bus/a2dx1.cpp | |
parent | a57b46ae933badd7441ce1644711dbb851e2b504 (diff) |
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/devices/bus/a2bus/a2dx1.cpp')
-rw-r--r-- | src/devices/bus/a2bus/a2dx1.cpp | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/a2dx1.cpp b/src/devices/bus/a2bus/a2dx1.cpp new file mode 100644 index 00000000000..e3b4fcc3fc5 --- /dev/null +++ b/src/devices/bus/a2bus/a2dx1.cpp @@ -0,0 +1,119 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/********************************************************************* + + a2dx1.c + + Implementation of the Decillionix DX-1 sampler card + +*********************************************************************/ + +#include "a2dx1.h" +#include "includes/apple2.h" +#include "sound/dac.h" + +/*************************************************************************** + PARAMETERS +***************************************************************************/ + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type A2BUS_DX1 = &device_creator<a2bus_dx1_device>; + +#define DAC_TAG "dac" + +MACHINE_CONFIG_FRAGMENT( a2dx1 ) + MCFG_SPEAKER_STANDARD_MONO("dx1spkr") + MCFG_SOUND_ADD(DAC_TAG, DAC, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "dx1spkr", 1.00) +MACHINE_CONFIG_END + +/*************************************************************************** + FUNCTION PROTOTYPES +***************************************************************************/ + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor a2bus_dx1_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( a2dx1 ); +} + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +a2bus_dx1_device::a2bus_dx1_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) : + device_t(mconfig, type, name, tag, owner, clock, shortname, source), + device_a2bus_card_interface(mconfig, *this), + m_dac(*this, DAC_TAG) +{ +} + +a2bus_dx1_device::a2bus_dx1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, A2BUS_DX1, "Decillonix DX-1", tag, owner, clock, "a2dx1", __FILE__), + device_a2bus_card_interface(mconfig, *this), + m_dac(*this, DAC_TAG) +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void a2bus_dx1_device::device_start() +{ + // set_a2bus_device makes m_slot valid + set_a2bus_device(); + + save_item(NAME(m_volume)); + save_item(NAME(m_lastdac)); +} + +void a2bus_dx1_device::device_reset() +{ + m_volume = m_lastdac = 0; +} + +UINT8 a2bus_dx1_device::read_c0nx(address_space &space, UINT8 offset) +{ + switch (offset) + { + case 1: // ADC input + return 0; + + case 3: // busy flag + return 0x80; // indicate not busy + + case 7: // 1-bit ADC input (bit 7 of c0n1, probably) + return 0; + } + + return 0xff; +} + +void a2bus_dx1_device::write_c0nx(address_space &space, UINT8 offset, UINT8 data) +{ + switch (offset) + { + case 5: // volume + m_volume = data; + m_dac->write_unsigned16(data*m_lastdac); + break; + + case 6: + m_lastdac = data; + m_dac->write_unsigned16(data*m_volume); + break; + } +} + +bool a2bus_dx1_device::take_c800() +{ + return false; +} |