diff options
Diffstat (limited to 'src/devices/bus/cbmiec/cbmiec.h')
-rw-r--r-- | src/devices/bus/cbmiec/cbmiec.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/src/devices/bus/cbmiec/cbmiec.h b/src/devices/bus/cbmiec/cbmiec.h new file mode 100644 index 00000000000..627e3dc203f --- /dev/null +++ b/src/devices/bus/cbmiec/cbmiec.h @@ -0,0 +1,210 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Commodore IEC Serial Bus emulation + +**********************************************************************/ + +#pragma once + +#ifndef __CBM_IEC__ +#define __CBM_IEC__ + +#include "emu.h" + + + +//************************************************************************** +// MACROS / CONSTANTS +//************************************************************************** + +#define CBM_IEC_TAG "iec_bus" + + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_CBM_IEC_BUS_ADD() \ + MCFG_DEVICE_ADD(CBM_IEC_TAG, CBM_IEC, 0) + + +#define MCFG_CBM_IEC_BUS_SRQ_CALLBACK(_write) \ + downcast<cbm_iec_device *>(device)->set_srq_callback(DEVCB_##_write); + +#define MCFG_CBM_IEC_BUS_ATN_CALLBACK(_write) \ + downcast<cbm_iec_device *>(device)->set_atn_callback(DEVCB_##_write); + +#define MCFG_CBM_IEC_BUS_CLK_CALLBACK(_write) \ + downcast<cbm_iec_device *>(device)->set_clk_callback(DEVCB_##_write); + +#define MCFG_CBM_IEC_BUS_DATA_CALLBACK(_write) \ + downcast<cbm_iec_device *>(device)->set_data_callback(DEVCB_##_write); + +#define MCFG_CBM_IEC_BUS_RESET_CALLBACK(_write) \ + downcast<cbm_iec_device *>(device)->set_reset_callback(DEVCB_##_write); + + +#define MCFG_CBM_IEC_SLOT_ADD(_tag, _address, _slot_intf, _def_slot) \ + MCFG_DEVICE_ADD(_tag, CBM_IEC_SLOT, 0) \ + MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) \ + downcast<cbm_iec_slot_device *>(device)->set_address(_address); + + +#define MCFG_CBM_IEC_ADD(_default_drive) \ + MCFG_CBM_IEC_SLOT_ADD("iec4", 4, cbm_iec_devices, NULL) \ + MCFG_CBM_IEC_SLOT_ADD("iec8", 8, cbm_iec_devices, _default_drive) \ + MCFG_CBM_IEC_SLOT_ADD("iec9", 9, cbm_iec_devices, NULL) \ + MCFG_CBM_IEC_SLOT_ADD("iec10", 10, cbm_iec_devices, NULL) \ + MCFG_CBM_IEC_SLOT_ADD("iec11", 11, cbm_iec_devices, NULL) \ + MCFG_CBM_IEC_BUS_ADD() + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> cbm_iec_device + +class cbm_iec_slot_device; +class device_cbm_iec_interface; + +class cbm_iec_device : public device_t +{ +public: + // construction/destruction + cbm_iec_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + template<class _write> void set_srq_callback(_write wr) { m_write_srq.set_callback(wr); } + template<class _write> void set_atn_callback(_write wr) { m_write_atn.set_callback(wr); } + template<class _write> void set_clk_callback(_write wr) { m_write_clk.set_callback(wr); } + template<class _write> void set_data_callback(_write wr) { m_write_data.set_callback(wr); } + template<class _write> void set_reset_callback(_write wr) { m_write_reset.set_callback(wr); } + + void add_device(cbm_iec_slot_device *slot, device_t *target); + + // reads for both host and peripherals + DECLARE_READ_LINE_MEMBER( srq_r ) { return get_signal(SRQ); } + DECLARE_READ_LINE_MEMBER( atn_r ) { return get_signal(ATN); } + DECLARE_READ_LINE_MEMBER( clk_r ) { return get_signal(CLK); } + DECLARE_READ_LINE_MEMBER( data_r ) { return get_signal(DATA); } + DECLARE_READ_LINE_MEMBER( reset_r ) { return get_signal(RESET); } + + // writes for host (driver_device) + DECLARE_WRITE_LINE_MEMBER( srq_w ) { set_signal(this, SRQ, state); } + DECLARE_WRITE_LINE_MEMBER( atn_w ) { set_signal(this, ATN, state); } + DECLARE_WRITE_LINE_MEMBER( clk_w ) { set_signal(this, CLK, state); } + DECLARE_WRITE_LINE_MEMBER( data_w ) { set_signal(this, DATA, state); } + DECLARE_WRITE_LINE_MEMBER( reset_w ) { set_signal(this, RESET, state); } + + // writes for peripherals (device_t) + void srq_w(device_t *device, int state) { set_signal(device, SRQ, state); } + void atn_w(device_t *device, int state) { set_signal(device, ATN, state); } + void clk_w(device_t *device, int state) { set_signal(device, CLK, state); } + void data_w(device_t *device, int state) { set_signal(device, DATA, state); } + void reset_w(device_t *device, int state) { set_signal(device, RESET, state); } + +protected: + enum + { + SRQ = 0, + ATN, + CLK, + DATA, + RESET, + SIGNAL_COUNT + }; + + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + virtual void device_stop(); + + class daisy_entry + { + public: + daisy_entry(device_t *device); + daisy_entry *next() const { return m_next; } + + daisy_entry * m_next; // next device + device_t * m_device; // associated device + device_cbm_iec_interface * m_interface; // associated device's daisy interface + + int m_line[SIGNAL_COUNT]; + }; + + simple_list<daisy_entry> m_device_list; + +private: + devcb_write_line m_write_srq; + devcb_write_line m_write_atn; + devcb_write_line m_write_clk; + devcb_write_line m_write_data; + devcb_write_line m_write_reset; + + void set_signal(device_t *device, int signal, int state); + int get_signal(int signal); + + int m_line[SIGNAL_COUNT]; +}; + + +// ======================> cbm_iec_slot_device + +class cbm_iec_slot_device : public device_t, + public device_slot_interface +{ +public: + // construction/destruction + cbm_iec_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + void set_address(int address) { m_address = address; } + int get_address() { return m_address; } + + // device-level overrides + virtual void device_start(); + +protected: + int m_address; +}; + + +// ======================> device_cbm_iec_interface + +class device_cbm_iec_interface : public device_slot_card_interface +{ + friend class cbm_iec_device; + +public: + // construction/destruction + device_cbm_iec_interface(const machine_config &mconfig, device_t &device); + virtual ~device_cbm_iec_interface(); + + device_cbm_iec_interface *next() const { return m_next; } + device_cbm_iec_interface *m_next; + + // optional operation overrides + virtual void cbm_iec_srq(int state) { }; + virtual void cbm_iec_atn(int state) { }; + virtual void cbm_iec_clk(int state) { }; + virtual void cbm_iec_data(int state) { }; + virtual void cbm_iec_reset(int state) { }; + + cbm_iec_device *m_bus; + cbm_iec_slot_device *m_slot; +}; + + +// device type definition +extern const device_type CBM_IEC; +extern const device_type CBM_IEC_SLOT; + + +SLOT_INTERFACE_EXTERN( cbm_iec_devices ); + + + +#endif |