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-rw-r--r--src/devices/cpu/palm/palm.h78
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diff --git a/src/devices/cpu/palm/palm.h b/src/devices/cpu/palm/palm.h
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+++ b/src/devices/cpu/palm/palm.h
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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