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-rw-r--r--src/devices/machine/s_smp.h87
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diff --git a/src/devices/machine/s_smp.h b/src/devices/machine/s_smp.h
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+++ b/src/devices/machine/s_smp.h
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+// license:LGPL-2.1+
+// copyright-holders:R. Belmont, Brad Martin
+/*****************************************************************************
+ *
+ * Nintendo/Sony S-SMP emulation
+ *
+ ****************************************************************************/
+
+#ifndef MAME_MACHINE_S_SMP_H
+#define MAME_MACHINE_S_SMP_H
+
+#include "cpu/spc700/spc700.h"
+
+/***************************************************************************
+ TYPE DEFINITIONS
+ ***************************************************************************/
+
+class s_smp_device : public spc700_device
+{
+public:
+ s_smp_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+ auto dsp_io_read_callback() { return m_dsp_io_r_cb.bind(); }
+ auto dsp_io_write_callback() { return m_dsp_io_w_cb.bind(); }
+
+ u8 spc_port_out_r(offs_t offset);
+ void spc_port_in_w(offs_t offset, u8 data);
+
+protected:
+ tiny_rom_entry const *device_rom_region() const override;
+ virtual void device_start() override;
+ virtual void device_reset() override;
+ virtual void device_clock_changed() override;
+
+ TIMER_CALLBACK_MEMBER(update_timers);
+
+ // device_memory_interface configuration
+ virtual space_config_vector memory_space_config() const override;
+
+ address_space_config m_data_config;
+
+private:
+ memory_access<16, 0, 0, ENDIANNESS_LITTLE>::cache m_dcache;
+ memory_access<16, 0, 0, ENDIANNESS_LITTLE>::specific m_data;
+ inline u8 data_read_byte(offs_t a)
+ {
+ /* IPL ROM enabled */
+ if (a >= 0xffc0 && m_ctrl & 0x80)
+ return m_ipl_region[a & 0x3f];
+
+ return m_dcache.read_byte(a);
+ }
+ inline void data_write_byte(offs_t a, u8 d) { m_data.write_byte(a, d); }
+
+ required_region_ptr<u8> m_ipl_region; /* SPC top 64 bytes */
+
+ u8 io_r(offs_t offset);
+ void io_w(offs_t offset, u8 data);
+
+ /* timers */
+ emu_timer *m_tick_timer;
+ bool m_timer_enabled[3];
+ u16 m_counter[3];
+ u8 m_subcounter[3];
+ inline void update_timer_tick(u8 which);
+
+ /* IO ports */
+ u8 m_port_in[4]; /* SPC input ports */
+ u8 m_port_out[4]; /* SPC output ports */
+
+ u16 m_TnDIV[3]; /**< Timer N Divider */
+
+ // registers
+ u8 m_test;
+ u8 m_ctrl;
+ u8 m_counter_reg[3];
+
+ devcb_read8 m_dsp_io_r_cb;
+ devcb_write8 m_dsp_io_w_cb;
+
+ void internal_map(address_map &map);
+};
+
+DECLARE_DEVICE_TYPE(S_SMP, s_smp_device)
+
+
+#endif // MAME_MACHINE_S_SMP_H