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// license:LGPL-2.1+
// copyright-holders:Michael Zapf
/****************************************************************************
TI-99 P-Code Card emulation.
See p_code.c for documentation
Michael Zapf
July 2009
Revised July 2010
February 2012: Rewritten as class
*****************************************************************************/
#ifndef MAME_BUS_TI99_PEB_PCODE_H
#define MAME_BUS_TI99_PEB_PCODE_H
#pragma once
#include "peribox.h"
#include "machine/74259.h"
#include "machine/tmc0430.h"
namespace bus::ti99::peb {
class ti_pcode_card_device : public device_t, public device_ti99_peribox_card_interface
{
public:
ti_pcode_card_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;
void setaddress_dbin(offs_t offset, int state) override;
void clock_in(int state) override;
DECLARE_INPUT_CHANGED_MEMBER( switch_changed );
protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_config_complete() override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
virtual ioport_constructor device_input_ports() const override;
private:
void ready_line(int state);
void pcpage_w(int state);
void ekrpg_w(int state);
void debugger_read(offs_t addr, uint8_t& value);
required_device_array<tmc0430_device, 8> m_groms;
required_device<ls259_device> m_crulatch;
uint8_t* m_rom;
int m_bank_select;
bool m_active;
int m_clock_count;
bool m_clockhigh;
// Address in card area
bool m_inDsrArea;
bool m_isrom0;
bool m_isrom12;
bool m_isgrom;
// Recent address
int m_address;
};
} // end namespace bus::ti99::peb
DECLARE_DEVICE_TYPE_NS(TI99_P_CODE, bus::ti99::peb, ti_pcode_card_device)
#endif // MAME_BUS_TI99_PEB_PCODE_H
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