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-rw-r--r--src/devices/cpu/m6502/st2204.h72
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diff --git a/src/devices/cpu/m6502/st2204.h b/src/devices/cpu/m6502/st2204.h
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+// license:BSD-3-Clause
+// copyright-holders:AJR
+/**********************************************************************
+
+ Sitronix ST2204 8-Bit Integrated Microcontroller
+
+**********************************************************************/
+
+#ifndef MAME_CPU_M6502_ST2204_H
+#define MAME_CPU_M6502_ST2204_H
+
+#pragma once
+
+#include "st2xxx.h"
+
+class st2204_device : public st2xxx_device
+{
+public:
+ st2204_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+protected:
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+private:
+ class mi_st2204 : public mi_st2xxx {
+ public:
+ virtual u8 read(u16 adr) override;
+ virtual u8 read_sync(u16 adr) override;
+ virtual u8 read_arg(u16 adr) override;
+ virtual u8 read_vector(u16 adr) override;
+ virtual void write(u16 adr, u8 val) override;
+
+ u8 pread(u16 adr);
+ u8 preadc(u16 adr);
+ void pwrite(u16 adr, u8 val);
+ u8 dread(u16 adr);
+ u8 dreadc(u16 adr);
+ void dwrite(u16 adr, u8 val);
+
+ bool irr_enable;
+ u8 irr;
+ u16 prr;
+ u16 drr;
+ };
+
+ u8 sys_r();
+ void sys_w(u8 data);
+ u8 irr_r();
+ void irr_w(u8 data);
+ u8 prrl_r();
+ void prrl_w(u8 data);
+ u8 prrh_r();
+ void prrh_w(u8 data);
+ u8 drrl_r();
+ void drrl_w(u8 data);
+ u8 drrh_r();
+ void drrh_w(u8 data);
+ u8 pmcr_r();
+ void pmcr_w(u8 data);
+
+ u8 pmem_r(offs_t offset);
+ void pmem_w(offs_t offset, u8 data);
+ u8 dmem_r(offs_t offset);
+ void dmem_w(offs_t offset, u8 data);
+
+ void int_map(address_map &map);
+};
+
+DECLARE_DEVICE_TYPE(ST2204, st2204_device)
+
+#endif // MAME_MACHINE_M6502_ST2204_H