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-rw-r--r--src/devices/bus/nes/mmc1.h82
1 files changed, 82 insertions, 0 deletions
diff --git a/src/devices/bus/nes/mmc1.h b/src/devices/bus/nes/mmc1.h
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+++ b/src/devices/bus/nes/mmc1.h
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+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+#ifndef __NES_MMC1_H
+#define __NES_MMC1_H
+
+#include "nxrom.h"
+
+
+// ======================> nes_sxrom_device
+
+class nes_sxrom_device : public nes_nrom_device
+{
+public:
+ // construction/destruction
+ nes_sxrom_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
+ nes_sxrom_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // device-level overrides
+ virtual void device_start();
+ virtual DECLARE_READ8_MEMBER(read_m);
+ virtual DECLARE_WRITE8_MEMBER(write_m);
+ virtual DECLARE_WRITE8_MEMBER(write_h);
+ virtual void update_regs(int reg); // this is needed to simplify NES-EVENT pcb implementation, which handle differently some regs!
+
+ virtual void pcb_reset();
+
+protected:
+ TIMER_CALLBACK_MEMBER(resync_callback);
+ virtual void set_prg();
+ virtual void set_chr();
+
+ UINT8 m_reg[4];
+ int m_reg_write_enable;
+ int m_latch;
+ int m_count;
+};
+
+class nes_sorom_device : public nes_sxrom_device
+{
+public:
+ // construction/destruction
+ nes_sorom_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual DECLARE_READ8_MEMBER(read_m);
+ virtual DECLARE_WRITE8_MEMBER(write_m);
+
+ virtual void pcb_reset();
+};
+
+class nes_sxrom_a_device : public nes_sxrom_device
+{
+public:
+ // construction/destruction
+ nes_sxrom_a_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual DECLARE_READ8_MEMBER(read_m);
+ virtual DECLARE_WRITE8_MEMBER(write_m);
+};
+
+class nes_sorom_a_device : public nes_sxrom_device
+{
+public:
+ // construction/destruction
+ nes_sorom_a_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual DECLARE_READ8_MEMBER(read_m);
+ virtual DECLARE_WRITE8_MEMBER(write_m);
+
+ virtual void pcb_reset();
+};
+
+
+
+
+// device type definition
+extern const device_type NES_SXROM;
+extern const device_type NES_SOROM;
+extern const device_type NES_SXROM_A;
+extern const device_type NES_SOROM_A;
+
+
+#endif