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// license:BSD-3-Clause
// copyright-holders:Patrick Mackinlay
#ifndef MAME_CPU_PALM_PALM_H
#define MAME_CPU_PALM_PALM_H
#pragma once
class palm_device : public cpu_device
{
public:
// interrupt lines are numbered 1..3
static unsigned constexpr IRPT_REQ1 = INPUT_LINE_IRQ0;
static unsigned constexpr IRPT_REQ2 = INPUT_LINE_IRQ1;
static unsigned constexpr IRPT_REQ3 = INPUT_LINE_IRQ2;
// four address spaces
static unsigned constexpr AS_PGM = AS_PROGRAM;
static unsigned constexpr AS_RWS = AS_DATA;
static unsigned constexpr AS_IOC = AS_IO;
static unsigned constexpr AS_IOD = 4;
auto getb_bus() { return m_getb_bus.bind(); }
auto program_level() { return m_program_level.bind(); }
auto select_ros() { return m_select_ros.bind(); }
palm_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock);
protected:
// device_t implementation
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
// device_execute_interface implementation
virtual u32 execute_min_cycles() const noexcept override { return 17; }
virtual u32 execute_max_cycles() const noexcept override { return 54; }
virtual void execute_run() override;
virtual void execute_set_input(int inputnum, int state) override;
// device_memory_interface implementation
virtual space_config_vector memory_space_config() const override;
// device_disasm_interface implementation
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
bool condition(unsigned const modifier, u16 const data, u8 const mask) const;
s16 modifier(unsigned const modifier) const;
void control(u8 data);
private:
// address spaces
address_space_config const m_pgm_config;
address_space_config const m_rws_config;
address_space_config const m_ioc_config;
address_space_config const m_iod_config;
memory_access<16, 1, 0, ENDIANNESS_BIG>::specific m_pgm;
memory_access<16, 1, 0, ENDIANNESS_BIG>::specific m_rws;
memory_access<4, 0, 0, ENDIANNESS_BIG>::specific m_ioc;
memory_access<4, 0, 0, ENDIANNESS_BIG>::specific m_iod;
devcb_write8 m_getb_bus;
devcb_write_line m_program_level;
devcb_write_line m_select_ros;
// mame state
int m_icount;
u16 m_pc;
u16 m_r[4][16]; // registers
u8 m_il; // interrupt level
u8 m_ff; // controller flip-flops
};
DECLARE_DEVICE_TYPE(PALM, palm_device)
#endif // MAME_CPU_PALM_PALM_H
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