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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
BBC Tube emulation
**********************************************************************
Pinout:
0V 1 2 R/NW (read/not-write)
0V 3 4 2MHzE
0V 5 6 NIRQ (not-interrupt request)
0V 7 8 NTUBE
0V 9 10 NRST (not-reset)
0V 11 12 D0
0V 13 14 D1
0V 15 16 D2
0V 17 18 D3
0V 19 20 D4
0V 21 22 D5
0V 23 24 D6
0V 25 26 D7
0V 27 28 A0
0V 29 30 A1
+5V 31 32 A2
+5V 33 34 A3
+5V 35 36 A4
+5V 37 38 A5
+5V 39 40 A6
**********************************************************************/
#ifndef MAME_BUS_BBC_TUBE_TUBE_H
#define MAME_BUS_BBC_TUBE_TUBE_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> bbc_tube_slot_device
class device_bbc_tube_interface;
class bbc_tube_slot_device : public device_t, public device_single_card_slot_interface<device_bbc_tube_interface>
{
public:
// construction/destruction
template <typename T>
bbc_tube_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&slot_options, const char *default_option)
: bbc_tube_slot_device(mconfig, tag, owner)
{
option_reset();
slot_options(*this);
set_default_option(default_option);
set_fixed(false);
}
bbc_tube_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, uint32_t clock = 0);
// callbacks
auto irq_handler() { return m_irq_handler.bind(); }
uint8_t host_r(offs_t offset);
void host_w(offs_t offset, uint8_t data);
DECLARE_WRITE_LINE_MEMBER( irq_w ) { m_irq_handler(state); }
protected:
// device-level overrides
virtual void device_start() override;
device_bbc_tube_interface *m_card;
private:
devcb_write_line m_irq_handler;
};
// ======================> device_bbc_tube_interface
class device_bbc_tube_interface : public device_interface
{
public:
// reading and writing
virtual uint8_t host_r(offs_t offset) { return 0xfe; }
virtual void host_w(offs_t offset, uint8_t data) { }
protected:
device_bbc_tube_interface(const machine_config &mconfig, device_t &device);
bbc_tube_slot_device *m_slot;
};
// device type definition
DECLARE_DEVICE_TYPE(BBC_TUBE_SLOT, bbc_tube_slot_device)
void bbc_tube_devices(device_slot_interface &device);
void bbc_extube_devices(device_slot_interface &device);
void bbc_intube_devices(device_slot_interface &device);
void electron_tube_devices(device_slot_interface &device);
#endif // MAME_BUS_BBC_TUBE_TUBE_H
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