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Diffstat (limited to 'src/mame/machine/hp48_port.h')
-rw-r--r-- | src/mame/machine/hp48_port.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/mame/machine/hp48_port.h b/src/mame/machine/hp48_port.h new file mode 100644 index 00000000000..d306a8a070e --- /dev/null +++ b/src/mame/machine/hp48_port.h @@ -0,0 +1,76 @@ +// license:BSD-3-Clause +// copyright-holders:Antoine Mine +/********************************************************************** + + Copyright (C) Antoine Mine' 2008 + + Hewlett Packard HP48 S/SX & G/GX and HP49 G + +**********************************************************************/ + +#ifndef MAME_MACHINE_HP84_PORT_H +#define MAME_MACHINE_HP84_PORT_H + +#pragma once + +/****************************** cards ********************************/ + +class hp48_state; + +class hp48_port_image_device : public device_t, public device_image_interface +{ +public: + // construction/destruction + hp48_port_image_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + + void set_port_config(int module, int max_size) + { + m_module = module; + m_max_size = max_size; + } + + // image-level overrides + virtual iodevice_t image_type() const override { return IO_MEMCARD; } + + virtual bool is_readable() const override { return 1; } + virtual bool is_writeable() const override { return 1; } + virtual bool is_creatable() const override { return 1; } + virtual bool must_be_loaded() const override { return 0; } + virtual bool is_reset_on_load() const override { return 0; } + virtual const char *file_extensions() const override { return "crd"; } + virtual const char *custom_instance_name() const override { return "port"; } + virtual const char *custom_brief_instance_name() const override { return "p"; } + + virtual image_init_result call_load() override; + virtual void call_unload() override; + virtual image_init_result call_create(int format_type, util::option_resolution *format_options) override; + + uint32_t port_size() const { return m_port_size; } + bool port_write() const { return m_port_write; } + uint8_t *port_data() const { return m_port_data.get(); } + +protected: + // device-level overrides + virtual void device_start() override; +private: + void fill_port(); + void unfill_port(); + + int m_module; /* memory module where the port is visible */ + int m_max_size; /* maximum size, in bytes 128 KB or 4 GB */ + + uint32_t m_port_size; + bool m_port_write; + std::unique_ptr<uint8_t[]> m_port_data; // each uint8_t stores one nibble + + required_device<hp48_state> m_hp48; +}; + +// device type definition +DECLARE_DEVICE_TYPE(HP48_PORT, hp48_port_image_device) + +#define MCFG_HP48_PORT_ADD(_tag, _module, _max_size) \ + MCFG_DEVICE_ADD(_tag, HP48_PORT, 0) \ + downcast<hp48_port_image_device &>(*device).set_port_config(_module, _max_size); + +#endif // MAME_MACHINE_HP84_PORT_H |