blob: a804ec40190c439470001152091234cd04e0ea04 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Computech Integra-B expansion board
**********************************************************************/
#ifndef MAME_BUS_BBC_INTERNAL_INTEGRAB_H
#define MAME_BUS_BBC_INTERNAL_INTEGRAB_H
#include "internal.h"
#include "machine/mc146818.h"
#include "machine/nvram.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class bbc_integrab_device :
public device_t,
public device_bbc_internal_interface
{
public:
// construction/destruction
bbc_integrab_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual ioport_constructor device_input_ports() const override;
virtual bool overrides_rom() override { return true; }
virtual bool overrides_ram() override { return true; }
virtual uint8_t ram_r(offs_t offset) override;
virtual void ram_w(offs_t offset, uint8_t data) override;
virtual uint8_t romsel_r(offs_t offset) override;
virtual void romsel_w(offs_t offset, uint8_t data) override;
virtual uint8_t paged_r(offs_t offset) override;
virtual void paged_w(offs_t offset, uint8_t data) override;
private:
required_memory_region m_ibos;
optional_device_array<bbc_romslot_device, 16> m_rom;
required_device<nvram_device> m_nvram;
required_device<mc146818_device> m_rtc;
required_ioport m_wp;
std::unique_ptr<uint8_t[]> m_ram;
bool m_shadow;
uint8_t m_romsel;
uint8_t m_ramsel;
};
// device type definition
DECLARE_DEVICE_TYPE(BBC_INTEGRAB, bbc_integrab_device)
#endif // MAME_BUS_BBC_INTERNAL_INTEGRAB_H
|