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Diffstat (limited to 'src/devices/bus/nes/subor.h')
-rw-r--r-- | src/devices/bus/nes/subor.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/devices/bus/nes/subor.h b/src/devices/bus/nes/subor.h new file mode 100644 index 00000000000..167561f3b36 --- /dev/null +++ b/src/devices/bus/nes/subor.h @@ -0,0 +1,78 @@ +// license:BSD-3-Clause +// copyright-holders:Kaz +#ifndef MAME_BUS_NES_SUBOR_H +#define MAME_BUS_NES_SUBOR_H + +#include "nxrom.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> nes_subor0_device + +class nes_subor0_device : + public nes_nrom_device +{ +public: + // construction/destruction + nes_subor0_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + + // device-level overrides + virtual void device_start() override; + virtual DECLARE_WRITE8_MEMBER(write_h) override; + + virtual void pcb_reset() override; + +private: + uint8_t m_reg[4]; +}; + +// ======================> nes_subor1_device + +class nes_subor1_device : + public nes_nrom_device +{ +public: + // construction/destruction + nes_subor1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + + // device-level overrides + virtual void device_start() override; + virtual DECLARE_WRITE8_MEMBER(write_h) override; + + virtual void pcb_reset() override; + +private: + uint8_t m_reg[4]; +}; + +// ======================> nes_subor2_device + +class nes_subor2_device : + public nes_nrom_device +{ +public: + // construction/destruction + nes_subor2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + + // device-level overrides + virtual void device_start() override; + virtual DECLARE_READ8_MEMBER(nt_r) override; + virtual DECLARE_WRITE8_MEMBER(write_l) override; + virtual DECLARE_READ8_MEMBER(read_l) override; + + virtual void ppu_latch(offs_t offset) override; + virtual void pcb_reset() override; + +private: + void update_banks(); + uint8_t m_switch_reg, m_bank_reg, m_chr_banking, m_page; +}; + +// device type definition +extern const device_type NES_SUBOR0; +extern const device_type NES_SUBOR1; +extern const device_type NES_SUBOR2; + +#endif /* MAME_BUS_NES_SUBOR_H */
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