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author | 2020-08-19 22:58:15 +0100 | |
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committer | 2020-08-19 22:59:51 +0100 | |
commit | fc785cecbc0df66b854c9c39ba0a79c04a3b1f0b (patch) | |
tree | da341030a1b7c5f08bde0d4e0a7b30cbc85cf242 /src/devices/bus/electron/mode7.h | |
parent | efed2ea2c21c9ac4dec8b3682efce8d731623abb (diff) |
bus/electron: Added the JAFA Mode 7 Display Unit.
Diffstat (limited to 'src/devices/bus/electron/mode7.h')
-rw-r--r-- | src/devices/bus/electron/mode7.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/devices/bus/electron/mode7.h b/src/devices/bus/electron/mode7.h new file mode 100644 index 00000000000..b3c447ee87d --- /dev/null +++ b/src/devices/bus/electron/mode7.h @@ -0,0 +1,66 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/********************************************************************** + + JAFA Mode 7 Display Unit + +**********************************************************************/ + +#ifndef MAME_BUS_ELECTRON_MODE7_H +#define MAME_BUS_ELECTRON_MODE7_H + +#include "exp.h" +#include "video/mc6845.h" +#include "video/saa5050.h" +#include "screen.h" + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class electron_mode7_device: + public device_t, + public device_electron_expansion_interface +{ +public: + static constexpr feature_type imperfect_features() { return feature::GRAPHICS; } + + // construction/destruction + electron_mode7_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + + DECLARE_INPUT_CHANGED_MEMBER(break_button); + +protected: + // device-level overrides + virtual void device_start() override; + + // optional information overrides + virtual void device_add_mconfig(machine_config &config) override; + virtual const tiny_rom_entry *device_rom_region() const override; + virtual ioport_constructor device_input_ports() const override; + + virtual uint8_t expbus_r(offs_t offset) override; + virtual void expbus_w(offs_t offset, uint8_t data) override; + +private: + required_device<screen_device> m_screen; + required_device<mc6845_device> m_hd6845; + required_device<saa5050_device> m_trom; + required_device<electron_expansion_slot_device> m_exp; + required_memory_region m_exp_rom; + + std::unique_ptr<uint8_t[]> m_videoram; + + MC6845_UPDATE_ROW(crtc_update_row); + DECLARE_WRITE_LINE_MEMBER(vsync_changed); + + uint8_t m_romsel; +}; + + +// device type definition +DECLARE_DEVICE_TYPE(ELECTRON_MODE7, electron_mode7_device) + + +#endif // MAME_BUS_ELECTRON_MODE7_H |