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Diffstat (limited to 'src/devices/machine/scoop.h')
-rw-r--r-- | src/devices/machine/scoop.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/devices/machine/scoop.h b/src/devices/machine/scoop.h new file mode 100644 index 00000000000..40bdf966060 --- /dev/null +++ b/src/devices/machine/scoop.h @@ -0,0 +1,42 @@ +// license:BSD-3-Clause +// copyright-holders:Ryan Holtz +/*************************************************************************** + + Sharp Scoop peripheral chip emulation skeleton + +***************************************************************************/ + +#ifndef MAME_MACHINE_SCOOP_H +#define MAME_MACHINE_SCOOP_H + +#pragma once + +class scoop_device : public device_t +{ +public: + scoop_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0); + + template <unsigned Line> auto gpio_out() { return m_gpio_out[Line].bind(); } + template <unsigned Line> void gpio_in(int state) { gpio_in((uint16_t)Line, state); } + + uint32_t read(offs_t offset); + void write(offs_t offset, uint32_t data); + +protected: + virtual void device_start() override ATTR_COLD; + virtual void device_reset() override ATTR_COLD; + + void gpio_in(const uint16_t line, const int state); + void update_gpio_direction(const uint16_t old_dir); + void update_gpio_outputs(const uint16_t old_latch, const uint16_t changed); + + uint16_t m_gpwr; + uint16_t m_gpio_in_latch; + uint16_t m_gpcr; + + devcb_write_line::array<13> m_gpio_out; +}; + +DECLARE_DEVICE_TYPE(SCOOP, scoop_device) + +#endif // MAME_MACHINE_SCOOP_H |