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// license:LGPL-2.1+
// copyright-holders:Michael Zapf
/****************************************************************************
Horizon Ramdisk
See horizon.c for documentation
Michael Zapf
February 2012
*****************************************************************************/
#ifndef MAME_BUS_TI99_PEB_HORIZON_H
#define MAME_BUS_TI99_PEB_HORIZON_H
#pragma once
#include "peribox.h"
#include "machine/ram.h"
#include "machine/74259.h"
namespace bus::ti99::peb {
class horizon_ramdisk_device : public device_t, public device_ti99_peribox_card_interface, public device_nvram_interface
{
public:
horizon_ramdisk_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void readz(offs_t offset, uint8_t *value) override;
void write(offs_t offset, uint8_t data) override;
void crureadz(offs_t offset, uint8_t *value) override;
void cruwrite(offs_t offset, uint8_t data) override;
DECLARE_INPUT_CHANGED_MEMBER( hs_changed );
protected:
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual ioport_constructor device_input_ports() const override ATTR_COLD;
virtual void nvram_default() override;
virtual bool nvram_read(util::read_stream &file) override;
virtual bool nvram_write(util::write_stream &file) override;
virtual bool nvram_can_write() const override;
void reset_in(int state) override;
private:
required_device<ram_device> m_ram;
required_device<ram_device> m_dsrram;
required_device<ram_device> m_optram;
required_device<ls259_device> m_crulatch_u4;
required_device<ls259_device> m_crulatch_u3;
void get_mem_size(int& ramsize, int& dsrsize);
void get_address_prefix();
void read_write(offs_t offset, uint8_t *value, bool write);
bool m_32k_installed;
bool m_phoenix_accessed;
bool m_dsr32k;
bool m_128kx8;
bool m_geneve_mode;
bool m_phoenix_split;
bool m_hideswitch;
bool m_rambo_supported;
bool m_reset_in;
// Do not save if nothing was modified.
bool m_modified;
int m_page;
int m_bank;
int m_ramsize;
int m_cru_base_horizon;
int m_cru_base_phoenix;
// Debugging
int m_current_bank;
int m_current_page;
};
} // end namespace bus::ti99::peb
DECLARE_DEVICE_TYPE_NS(TI99_HORIZON, bus::ti99::peb, horizon_ramdisk_device)
#endif // MAME_BUS_TI99_PEB_HORIZON_H
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