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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/cpc/playcity.cpp | |
parent | a57b46ae933badd7441ce1644711dbb851e2b504 (diff) |
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/devices/bus/cpc/playcity.cpp')
-rw-r--r-- | src/devices/bus/cpc/playcity.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/devices/bus/cpc/playcity.cpp b/src/devices/bus/cpc/playcity.cpp new file mode 100644 index 00000000000..9686ce952f7 --- /dev/null +++ b/src/devices/bus/cpc/playcity.cpp @@ -0,0 +1,162 @@ +// license:BSD-3-Clause +// copyright-holders:Barry Rodewald +/* + PlayCity expansion device + + Z80 CTC + 2x YMZ294 (clocks provided by CTC) + + TODO: + IRQs aren't working currently, the Z80CTC core requires the daisy chain setup to acknowledge IRQs properly, and that can't be used in a slot device currently. +*/ + +#include "playcity.h" +#include "includes/amstrad.h" + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type CPC_PLAYCITY = &device_creator<cpc_playcity_device>; + +// device machine config +static MACHINE_CONFIG_FRAGMENT( cpc_playcity ) + MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL_4MHz) + MCFG_Z80CTC_ZC1_CB(WRITELINE(cpc_playcity_device,ctc_zc1_cb)) + MCFG_Z80CTC_ZC2_CB(DEVWRITELINE("ctc",z80ctc_device,trg3)) + MCFG_Z80CTC_INTR_CB(WRITELINE(cpc_playcity_device,ctc_intr_cb)) + + MCFG_SPEAKER_STANDARD_STEREO("lspeaker","rspeaker") + MCFG_SOUND_ADD("ymz_1",YMZ294,XTAL_4MHz) // when timer is not set, operates at 4MHz (interally divided by 2, so equivalent to the ST) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.30) + MCFG_SOUND_ADD("ymz_2",YMZ294,XTAL_4MHz) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.30) + + // pass-through + MCFG_DEVICE_ADD("exp", CPC_EXPANSION_SLOT, 0) + MCFG_DEVICE_SLOT_INTERFACE(cpc_exp_cards, NULL, false) + MCFG_CPC_EXPANSION_SLOT_OUT_IRQ_CB(DEVWRITELINE("^", cpc_expansion_slot_device, irq_w)) + MCFG_CPC_EXPANSION_SLOT_OUT_NMI_CB(DEVWRITELINE("^", cpc_expansion_slot_device, nmi_w)) + MCFG_CPC_EXPANSION_SLOT_OUT_ROMDIS_CB(DEVWRITELINE("^", cpc_expansion_slot_device, romdis_w)) // ROMDIS + +MACHINE_CONFIG_END + + +machine_config_constructor cpc_playcity_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( cpc_playcity ); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +cpc_playcity_device::cpc_playcity_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, CPC_PLAYCITY, "PlayCity", tag, owner, clock, "cpc_playcity", __FILE__), + device_cpc_expansion_card_interface(mconfig, *this), + m_ctc(*this,"ctc"), + m_ymz1(*this,"ymz_1"), + m_ymz2(*this,"ymz_2") +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void cpc_playcity_device::device_start() +{ + device_t* cpu = machine().device("maincpu"); + address_space& space = cpu->memory().space(AS_IO); + m_slot = dynamic_cast<cpc_expansion_slot_device *>(owner()); + + space.install_readwrite_handler(0xf880,0xf883,0,0,read8_delegate(FUNC(cpc_playcity_device::ctc_r),this),write8_delegate(FUNC(cpc_playcity_device::ctc_w),this)); + space.install_readwrite_handler(0xf884,0xf884,0,0,read8_delegate(FUNC(cpc_playcity_device::ymz1_data_r),this),write8_delegate(FUNC(cpc_playcity_device::ymz1_data_w),this)); + space.install_readwrite_handler(0xf888,0xf888,0,0,read8_delegate(FUNC(cpc_playcity_device::ymz2_data_r),this),write8_delegate(FUNC(cpc_playcity_device::ymz2_data_w),this)); + space.install_write_handler(0xf984,0xf984,0,0,write8_delegate(FUNC(cpc_playcity_device::ymz1_address_w),this)); + space.install_write_handler(0xf988,0xf988,0,0,write8_delegate(FUNC(cpc_playcity_device::ymz2_address_w),this)); +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void cpc_playcity_device::device_reset() +{ +} + + +READ8_MEMBER(cpc_playcity_device::ctc_r) +{ + return m_ctc->read(space,offset); +} + +WRITE8_MEMBER(cpc_playcity_device::ctc_w) +{ + m_ctc->write(space,offset,data); + if(offset == 0) + update_ymz_clock(); +} + +WRITE8_MEMBER(cpc_playcity_device::ymz1_address_w) +{ + m_ymz1->address_w(space,offset,data); +} + +WRITE8_MEMBER(cpc_playcity_device::ymz2_address_w) +{ + m_ymz2->address_w(space,offset,data); +} + +WRITE8_MEMBER(cpc_playcity_device::ymz1_data_w) +{ + m_ymz1->data_w(space,offset,data); +} + +WRITE8_MEMBER(cpc_playcity_device::ymz2_data_w) +{ + m_ymz2->data_w(space,offset,data); +} + +READ8_MEMBER(cpc_playcity_device::ymz1_data_r) +{ + return m_ymz1->data_r(space,offset); +} + +READ8_MEMBER(cpc_playcity_device::ymz2_data_r) +{ + return m_ymz2->data_r(space,offset); +} + +void cpc_playcity_device::update_ymz_clock() +{ + // Bit of a hack job here, since there is no way currently to connect the CTC channel output directly to the YMZ clocks. + UINT8 rate = m_ctc->get_channel_constant(0); + UINT32 clk = XTAL_4MHz; + + switch(rate) + { + case 0x00: clk = 3980000; break; + case 0x01: clk = 2000000; break; + case 0x02: clk = 3000000; break; + case 0x03: clk = 3330000; break; + case 0x04: clk = 3500000; break; + case 0x05: clk = 3600000; break; + case 0x06: clk = 3670000; break; + case 0x07: clk = 3710000; break; + case 0x08: clk = 3750000; break; + case 0x09: clk = 3780000; break; + case 0x0a: clk = 3800000; break; + case 0x0b: clk = 3820000; break; + case 0x0c: clk = 3830000; break; + case 0x0d: clk = 3850000; break; + case 0x0e: clk = 3860000; break; + case 0x0f: clk = 3870000; break; + } + + clk = clk / 2; // YMZ294 has an internal /2 divider (not handled in AY core?) + m_ymz1->ay_set_clock(clk); + m_ymz2->ay_set_clock(clk); + popmessage("YMZ clocks set to %d Hz",clk); +} |