summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/cbmiec/cbmiec.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/cbmiec/cbmiec.h')
-rw-r--r--src/devices/bus/cbmiec/cbmiec.h210
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