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https://github.com/holub/mame
synced 2025-06-29 23:48:56 +03:00
(MESS) amstrad: Added preliminary support for the PlayCity.
This commit is contained in:
mahlemiut
parent
9f236592c7
commit
ed94243929
@ -1294,6 +1294,7 @@ BUSOBJS += $(BUSOBJ)/cpc/cpc_rs232.o
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BUSOBJS += $(BUSOBJ)/cpc/mface2.o
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BUSOBJS += $(BUSOBJ)/cpc/symbfac2.o
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BUSOBJS += $(BUSOBJ)/cpc/amdrum.o
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BUSOBJS += $(BUSOBJ)/cpc/playcity.o
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endif
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#-------------------------------------------------
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156
src/emu/bus/cpc/playcity.c
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156
src/emu/bus/cpc/playcity.c
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@ -0,0 +1,156 @@
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/*
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PlayCity expansion device
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Z80 CTC
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2x YMZ294 (clocks provided by CTC)
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*/
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#include "playcity.h"
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#include "includes/amstrad.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type CPC_PLAYCITY = &device_creator<cpc_playcity_device>;
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// device machine config
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static MACHINE_CONFIG_FRAGMENT( cpc_playcity )
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MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL_4MHz)
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MCFG_Z80CTC_ZC1_CB(WRITELINE(cpc_playcity_device,ctc_zc1_cb))
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MCFG_Z80CTC_ZC2_CB(WRITELINE(cpc_playcity_device,ctc_zc2_cb))
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MCFG_SPEAKER_STANDARD_MONO("mono")
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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)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)
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MCFG_SOUND_ADD("ymz_2",YMZ294,XTAL_4MHz)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)
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// pass-through
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MCFG_DEVICE_ADD("exp", CPC_EXPANSION_SLOT, 0)
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MCFG_DEVICE_SLOT_INTERFACE(cpc_exp_cards, NULL, false)
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MCFG_CPC_EXPANSION_SLOT_OUT_IRQ_CB(DEVWRITELINE("^", cpc_expansion_slot_device, irq_w))
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MCFG_CPC_EXPANSION_SLOT_OUT_NMI_CB(DEVWRITELINE("^", cpc_expansion_slot_device, nmi_w))
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MCFG_CPC_EXPANSION_SLOT_OUT_ROMDIS_CB(DEVWRITELINE("^", cpc_expansion_slot_device, romdis_w)) // ROMDIS
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MACHINE_CONFIG_END
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machine_config_constructor cpc_playcity_device::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( cpc_playcity );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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cpc_playcity_device::cpc_playcity_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, CPC_PLAYCITY, "PlayCity", tag, owner, clock, "cpc_playcity", __FILE__),
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device_cpc_expansion_card_interface(mconfig, *this),
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m_ctc(*this,"ctc"),
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m_ymz1(*this,"ymz_1"),
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m_ymz2(*this,"ymz_2")
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void cpc_playcity_device::device_start()
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{
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device_t* cpu = machine().device("maincpu");
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address_space& space = cpu->memory().space(AS_IO);
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m_slot = dynamic_cast<cpc_expansion_slot_device *>(owner());
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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));
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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));
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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));
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space.install_write_handler(0xf984,0xf984,0,0,write8_delegate(FUNC(cpc_playcity_device::ymz1_address_w),this));
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space.install_write_handler(0xf988,0xf988,0,0,write8_delegate(FUNC(cpc_playcity_device::ymz2_address_w),this));
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void cpc_playcity_device::device_reset()
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{
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}
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READ8_MEMBER(cpc_playcity_device::ctc_r)
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{
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return m_ctc->read(space,offset);
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}
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WRITE8_MEMBER(cpc_playcity_device::ctc_w)
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{
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m_ctc->write(space,offset,data);
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update_ymz_clock();
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}
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WRITE8_MEMBER(cpc_playcity_device::ymz1_address_w)
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{
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m_ymz1->address_w(space,offset,data);
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}
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WRITE8_MEMBER(cpc_playcity_device::ymz2_address_w)
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{
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m_ymz2->address_w(space,offset,data);
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}
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WRITE8_MEMBER(cpc_playcity_device::ymz1_data_w)
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{
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m_ymz1->data_w(space,offset,data);
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}
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WRITE8_MEMBER(cpc_playcity_device::ymz2_data_w)
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{
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m_ymz2->data_w(space,offset,data);
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}
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READ8_MEMBER(cpc_playcity_device::ymz1_data_r)
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{
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return m_ymz1->data_r(space,offset);
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}
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READ8_MEMBER(cpc_playcity_device::ymz2_data_r)
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{
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return m_ymz2->data_r(space,offset);
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}
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void cpc_playcity_device::update_ymz_clock()
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{
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// Bit of a hack job here, since there is no way currently to connect the CTC channel output directly to the YMZ clocks.
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UINT8 rate = m_ctc->get_channel_constant(0);
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UINT64 clk = XTAL_4MHz;
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switch(rate)
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{
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case 0x00: clk = 3980000; break;
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case 0x01: clk = 2000000; break;
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case 0x02: clk = 3000000; break;
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case 0x03: clk = 3330000; break;
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case 0x04: clk = 3500000; break;
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case 0x05: clk = 3600000; break;
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case 0x06: clk = 3670000; break;
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case 0x07: clk = 3710000; break;
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case 0x08: clk = 3750000; break;
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case 0x09: clk = 3780000; break;
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case 0x0a: clk = 3800000; break;
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case 0x0b: clk = 3820000; break;
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case 0x0c: clk = 3830000; break;
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case 0x0d: clk = 3850000; break;
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case 0x0e: clk = 3860000; break;
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case 0x0f: clk = 3870000; break;
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}
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clk = clk / 2; // YMZ294 has an internal /2 divider (not handled in AY core?)
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m_ymz1->ay_set_clock(clk);
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m_ymz2->ay_set_clock(clk);
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popmessage("YMZ clocks set to %lliHz",clk);
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}
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65
src/emu/bus/cpc/playcity.h
Normal file
65
src/emu/bus/cpc/playcity.h
Normal file
@ -0,0 +1,65 @@
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/*
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PlayCity expansion device
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I/O ports:
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* F880 - Z80CTC channel 0 (input is system clock (4MHz), output to YMZ294 clock)
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* F881 - Z80CTC channel 1 (input from CRTC CURSOR, output to NMI)
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* F882 - Z80CTC channel 2 (input is system clock (4MHz), output to channel 3 input)
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* F883 - Z80CTC channel 3 (input is channel 2 output, output to IRQ)
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* F884 - YMZ294 #1 (right) data
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* F888 - YMZ294 #2 (left) data
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* F984 - YMZ294 #1 (right) register select
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* F988 - YMZ294 #2 (left) register select
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*/
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#ifndef CPC_PLAYCITY_H_
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#define CPC_PLAYCITY_H_
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#include "emu.h"
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#include "cpcexp.h"
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#include "sound/ay8910.h"
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#include "machine/z80ctc.h"
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class cpc_playcity_device : public device_t,
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public device_cpc_expansion_card_interface
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{
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public:
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// construction/destruction
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cpc_playcity_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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// optional information overrides
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virtual machine_config_constructor device_mconfig_additions() const;
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DECLARE_READ8_MEMBER(ctc_r);
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DECLARE_WRITE8_MEMBER(ctc_w);
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DECLARE_WRITE8_MEMBER(ymz1_address_w);
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DECLARE_WRITE8_MEMBER(ymz2_address_w);
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DECLARE_WRITE8_MEMBER(ymz1_data_w);
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DECLARE_WRITE8_MEMBER(ymz2_data_w);
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DECLARE_READ8_MEMBER(ymz1_data_r);
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DECLARE_READ8_MEMBER(ymz2_data_r);
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DECLARE_WRITE_LINE_MEMBER(ctc_zc1_cb) { if(state) {m_slot->nmi_w(1); m_slot->nmi_w(0); } }
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DECLARE_WRITE_LINE_MEMBER(ctc_zc2_cb) { m_slot->irq_w(state); }
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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private:
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cpc_expansion_slot_device *m_slot;
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required_device<z80ctc_device> m_ctc;
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required_device<ymz294_device> m_ymz1;
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required_device<ymz294_device> m_ymz2;
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void update_ymz_clock();
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};
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// device type definition
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extern const device_type CPC_PLAYCITY;
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#endif /* CPC_PLAYCITY_H_ */
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@ -74,6 +74,8 @@ public:
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DECLARE_WRITE_LINE_MEMBER( trg2 );
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DECLARE_WRITE_LINE_MEMBER( trg3 );
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UINT16 get_channel_constant(UINT8 channel) { return m_channel[channel].m_tconst; }
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protected:
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// device-level overrides
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virtual void device_start();
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@ -804,6 +804,7 @@ SLOT_INTERFACE_START(cpc_exp_cards)
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SLOT_INTERFACE("amsrs232", CPC_RS232_AMS)
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SLOT_INTERFACE("sf2", CPC_SYMBIFACE2)
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SLOT_INTERFACE("amdrum", CPC_AMDRUM)
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SLOT_INTERFACE("playcity", CPC_PLAYCITY)
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SLOT_INTERFACE_END
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SLOT_INTERFACE_START(cpcplus_exp_cards)
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@ -815,6 +816,7 @@ SLOT_INTERFACE_START(cpcplus_exp_cards)
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SLOT_INTERFACE("amsrs232", CPC_RS232_AMS)
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SLOT_INTERFACE("sf2", CPC_SYMBIFACE2)
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SLOT_INTERFACE("amdrum", CPC_AMDRUM)
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SLOT_INTERFACE("playcity", CPC_PLAYCITY)
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SLOT_INTERFACE_END
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SLOT_INTERFACE_START(amstrad_centronics_devices)
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@ -22,6 +22,7 @@
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#include "bus/cpc/cpc_rs232.h"
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#include "bus/cpc/symbfac2.h"
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#include "bus/cpc/amdrum.h"
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#include "bus/cpc/playcity.h"
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#include "machine/ram.h"
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#include "imagedev/cassette.h"
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#include "bus/centronics/ctronics.h"
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