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r33097 Saturday 1st November, 2014 at 03:03:29 UTC by Barry Rodewald
(MESS) amstrad: Added preliminary support for the PlayCity.
[src/emu/bus]bus.mak
[src/emu/bus/cpc]playcity.c* playcity.h*
[src/emu/machine]z80ctc.h
[src/mess/drivers]amstrad.c
[src/mess/includes]amstrad.h

trunk/src/emu/bus/bus.mak
r241608r241609
12941294BUSOBJS += $(BUSOBJ)/cpc/mface2.o
12951295BUSOBJS += $(BUSOBJ)/cpc/symbfac2.o
12961296BUSOBJS += $(BUSOBJ)/cpc/amdrum.o
1297BUSOBJS += $(BUSOBJ)/cpc/playcity.o
12971298endif
12981299
12991300#-------------------------------------------------
trunk/src/emu/bus/cpc/playcity.c
r0r241609
1/*
2   PlayCity expansion device
3
4   Z80 CTC
5   2x YMZ294 (clocks provided by CTC)
6*/
7
8#include "playcity.h"
9#include "includes/amstrad.h"
10
11//**************************************************************************
12//  DEVICE DEFINITIONS
13//**************************************************************************
14
15const device_type CPC_PLAYCITY = &device_creator<cpc_playcity_device>;
16
17// device machine config
18static MACHINE_CONFIG_FRAGMENT( cpc_playcity )
19   MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL_4MHz)
20   MCFG_Z80CTC_ZC1_CB(WRITELINE(cpc_playcity_device,ctc_zc1_cb))
21   MCFG_Z80CTC_ZC2_CB(WRITELINE(cpc_playcity_device,ctc_zc2_cb))
22
23   MCFG_SPEAKER_STANDARD_MONO("mono")
24   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)
25   MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)
26   MCFG_SOUND_ADD("ymz_2",YMZ294,XTAL_4MHz)
27   MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)
28
29   // pass-through
30   MCFG_DEVICE_ADD("exp", CPC_EXPANSION_SLOT, 0)
31   MCFG_DEVICE_SLOT_INTERFACE(cpc_exp_cards, NULL, false)
32   MCFG_CPC_EXPANSION_SLOT_OUT_IRQ_CB(DEVWRITELINE("^", cpc_expansion_slot_device, irq_w))
33   MCFG_CPC_EXPANSION_SLOT_OUT_NMI_CB(DEVWRITELINE("^", cpc_expansion_slot_device, nmi_w))
34   MCFG_CPC_EXPANSION_SLOT_OUT_ROMDIS_CB(DEVWRITELINE("^", cpc_expansion_slot_device, romdis_w))  // ROMDIS
35
36MACHINE_CONFIG_END
37
38
39machine_config_constructor cpc_playcity_device::device_mconfig_additions() const
40{
41   return MACHINE_CONFIG_NAME( cpc_playcity );
42}
43
44
45//**************************************************************************
46//  LIVE DEVICE
47//**************************************************************************
48
49cpc_playcity_device::cpc_playcity_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
50   device_t(mconfig, CPC_PLAYCITY, "PlayCity", tag, owner, clock, "cpc_playcity", __FILE__),
51   device_cpc_expansion_card_interface(mconfig, *this),
52   m_ctc(*this,"ctc"),
53   m_ymz1(*this,"ymz_1"),
54   m_ymz2(*this,"ymz_2")
55{
56}
57
58//-------------------------------------------------
59//  device_start - device-specific startup
60//-------------------------------------------------
61
62void cpc_playcity_device::device_start()
63{
64   device_t* cpu = machine().device("maincpu");
65   address_space& space = cpu->memory().space(AS_IO);
66   m_slot = dynamic_cast<cpc_expansion_slot_device *>(owner());
67
68   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));
69   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));
70   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));
71   space.install_write_handler(0xf984,0xf984,0,0,write8_delegate(FUNC(cpc_playcity_device::ymz1_address_w),this));
72   space.install_write_handler(0xf988,0xf988,0,0,write8_delegate(FUNC(cpc_playcity_device::ymz2_address_w),this));
73}
74
75//-------------------------------------------------
76//  device_reset - device-specific reset
77//-------------------------------------------------
78
79void cpc_playcity_device::device_reset()
80{
81}
82
83
84READ8_MEMBER(cpc_playcity_device::ctc_r)
85{
86   return m_ctc->read(space,offset);
87}
88
89WRITE8_MEMBER(cpc_playcity_device::ctc_w)
90{
91   m_ctc->write(space,offset,data);
92   update_ymz_clock();
93}
94
95WRITE8_MEMBER(cpc_playcity_device::ymz1_address_w)
96{
97   m_ymz1->address_w(space,offset,data);
98}
99
100WRITE8_MEMBER(cpc_playcity_device::ymz2_address_w)
101{
102   m_ymz2->address_w(space,offset,data);
103}
104
105WRITE8_MEMBER(cpc_playcity_device::ymz1_data_w)
106{
107   m_ymz1->data_w(space,offset,data);
108}
109
110WRITE8_MEMBER(cpc_playcity_device::ymz2_data_w)
111{
112   m_ymz2->data_w(space,offset,data);
113}
114
115READ8_MEMBER(cpc_playcity_device::ymz1_data_r)
116{
117   return m_ymz1->data_r(space,offset);
118}
119
120READ8_MEMBER(cpc_playcity_device::ymz2_data_r)
121{
122   return m_ymz2->data_r(space,offset);
123}
124
125void cpc_playcity_device::update_ymz_clock()
126{
127   // Bit of a hack job here, since there is no way currently to connect the CTC channel output directly to the YMZ clocks.
128   UINT8 rate = m_ctc->get_channel_constant(0);
129   UINT64 clk = XTAL_4MHz;
130
131   switch(rate)
132   {
133   case 0x00: clk = 3980000; break;
134   case 0x01: clk = 2000000; break;
135   case 0x02: clk = 3000000; break;
136   case 0x03: clk = 3330000; break;
137   case 0x04: clk = 3500000; break;
138   case 0x05: clk = 3600000; break;
139   case 0x06: clk = 3670000; break;
140   case 0x07: clk = 3710000; break;
141   case 0x08: clk = 3750000; break;
142   case 0x09: clk = 3780000; break;
143   case 0x0a: clk = 3800000; break;
144   case 0x0b: clk = 3820000; break;
145   case 0x0c: clk = 3830000; break;
146   case 0x0d: clk = 3850000; break;
147   case 0x0e: clk = 3860000; break;
148   case 0x0f: clk = 3870000; break;
149   }
150
151   clk = clk / 2;  // YMZ294 has an internal /2 divider (not handled in AY core?)
152   m_ymz1->ay_set_clock(clk);
153   m_ymz2->ay_set_clock(clk);
154   popmessage("YMZ clocks set to %lliHz",clk);
155}
156
trunk/src/emu/bus/cpc/playcity.h
r0r241609
1/*
2   PlayCity expansion device
3
4   I/O ports:
5   * F880 - Z80CTC channel 0 (input is system clock (4MHz), output to YMZ294 clock)
6   * F881 - Z80CTC channel 1 (input from CRTC CURSOR, output to NMI)
7   * F882 - Z80CTC channel 2 (input is system clock (4MHz), output to channel 3 input)
8   * F883 - Z80CTC channel 3 (input is channel 2 output, output to IRQ)
9   * F884 - YMZ294 #1 (right) data
10   * F888 - YMZ294 #2 (left) data
11   * F984 - YMZ294 #1 (right) register select
12   * F988 - YMZ294 #2 (left) register select
13*/
14
15#ifndef CPC_PLAYCITY_H_
16#define CPC_PLAYCITY_H_
17
18
19#include "emu.h"
20#include "cpcexp.h"
21#include "sound/ay8910.h"
22#include "machine/z80ctc.h"
23
24class cpc_playcity_device : public device_t,
25            public device_cpc_expansion_card_interface
26{
27public:
28   // construction/destruction
29   cpc_playcity_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
30
31   // optional information overrides
32   virtual machine_config_constructor device_mconfig_additions() const;
33
34   DECLARE_READ8_MEMBER(ctc_r);
35   DECLARE_WRITE8_MEMBER(ctc_w);
36   DECLARE_WRITE8_MEMBER(ymz1_address_w);
37   DECLARE_WRITE8_MEMBER(ymz2_address_w);
38   DECLARE_WRITE8_MEMBER(ymz1_data_w);
39   DECLARE_WRITE8_MEMBER(ymz2_data_w);
40   DECLARE_READ8_MEMBER(ymz1_data_r);
41   DECLARE_READ8_MEMBER(ymz2_data_r);
42   DECLARE_WRITE_LINE_MEMBER(ctc_zc1_cb) { if(state) {m_slot->nmi_w(1); m_slot->nmi_w(0); } }
43   DECLARE_WRITE_LINE_MEMBER(ctc_zc2_cb) { m_slot->irq_w(state); }
44
45protected:
46   // device-level overrides
47   virtual void device_start();
48   virtual void device_reset();
49
50private:
51   cpc_expansion_slot_device *m_slot;
52
53   required_device<z80ctc_device> m_ctc;
54   required_device<ymz294_device> m_ymz1;
55   required_device<ymz294_device> m_ymz2;
56
57   void update_ymz_clock();
58};
59
60// device type definition
61extern const device_type CPC_PLAYCITY;
62
63
64#endif /* CPC_PLAYCITY_H_ */
65
trunk/src/emu/machine/z80ctc.h
r241608r241609
7474   DECLARE_WRITE_LINE_MEMBER( trg2 );
7575   DECLARE_WRITE_LINE_MEMBER( trg3 );
7676
77   UINT16 get_channel_constant(UINT8 channel) { return m_channel[channel].m_tconst; }
78
7779protected:
7880   // device-level overrides
7981   virtual void device_start();
trunk/src/mess/drivers/amstrad.c
r241608r241609
804804   SLOT_INTERFACE("amsrs232", CPC_RS232_AMS)
805805   SLOT_INTERFACE("sf2", CPC_SYMBIFACE2)
806806   SLOT_INTERFACE("amdrum", CPC_AMDRUM)
807   SLOT_INTERFACE("playcity", CPC_PLAYCITY)
807808SLOT_INTERFACE_END
808809
809810SLOT_INTERFACE_START(cpcplus_exp_cards)
r241608r241609
815816   SLOT_INTERFACE("amsrs232", CPC_RS232_AMS)
816817   SLOT_INTERFACE("sf2", CPC_SYMBIFACE2)
817818   SLOT_INTERFACE("amdrum", CPC_AMDRUM)
819   SLOT_INTERFACE("playcity", CPC_PLAYCITY)
818820SLOT_INTERFACE_END
819821
820822SLOT_INTERFACE_START(amstrad_centronics_devices)
trunk/src/mess/includes/amstrad.h
r241608r241609
2222#include "bus/cpc/cpc_rs232.h"
2323#include "bus/cpc/symbfac2.h"
2424#include "bus/cpc/amdrum.h"
25#include "bus/cpc/playcity.h"
2526#include "machine/ram.h"
2627#include "imagedev/cassette.h"
2728#include "bus/centronics/ctronics.h"

https://github.com/mamedev/mame/commit/ed94243929ba6b28118d713e535ea451430ca20c

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