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// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
PlayCity expansion device
I/O ports:
* F880 - Z80CTC channel 0 (input is system clock (4MHz), output to YMZ294 clock)
* F881 - Z80CTC channel 1 (input from CRTC CURSOR, output to /NMI)
* F882 - Z80CTC channel 2 (input is system clock (4MHz), output to channel 3 input)
* F883 - Z80CTC channel 3 (input is channel 2 output)
* F884 - YMZ294 #1 (right) data
* F888 - YMZ294 #2 (left) data
* F984 - YMZ294 #1 (right) register select
* F988 - YMZ294 #2 (left) register select
*/
#ifndef CPC_PLAYCITY_H_
#define CPC_PLAYCITY_H_
#include "emu.h"
#include "cpcexp.h"
#include "sound/ay8910.h"
#include "machine/z80ctc.h"
class cpc_playcity_device : public device_t,
public device_cpc_expansion_card_interface
{
public:
// construction/destruction
cpc_playcity_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const override;
DECLARE_READ8_MEMBER(ctc_r);
DECLARE_WRITE8_MEMBER(ctc_w);
DECLARE_WRITE8_MEMBER(ymz1_address_w);
DECLARE_WRITE8_MEMBER(ymz2_address_w);
DECLARE_WRITE8_MEMBER(ymz1_data_w);
DECLARE_WRITE8_MEMBER(ymz2_data_w);
DECLARE_READ8_MEMBER(ymz1_data_r);
DECLARE_READ8_MEMBER(ymz2_data_r);
DECLARE_WRITE_LINE_MEMBER(ctc_zc1_cb) { if(state) { m_slot->nmi_w(1); m_slot->nmi_w(0); } }
DECLARE_WRITE_LINE_MEMBER(ctc_intr_cb) { m_slot->irq_w(state); }
virtual WRITE_LINE_MEMBER(cursor_w) override { m_ctc->trg1(state); }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
cpc_expansion_slot_device *m_slot;
required_device<z80ctc_device> m_ctc;
required_device<ymz294_device> m_ymz1;
required_device<ymz294_device> m_ymz2;
void update_ymz_clock();
};
// device type definition
extern const device_type CPC_PLAYCITY;
#endif /* CPC_PLAYCITY_H_ */
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