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Diffstat (limited to 'src/devices/bus/a2bus/a2sd.h')
| -rw-r--r-- | src/devices/bus/a2bus/a2sd.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/a2sd.h b/src/devices/bus/a2bus/a2sd.h new file mode 100644 index 00000000000..c4d8b4c8f02 --- /dev/null +++ b/src/devices/bus/a2bus/a2sd.h @@ -0,0 +1,67 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/********************************************************************* + + a2sd.h + + Implementation of the AppleIISD card + +*********************************************************************/ + +#ifndef MAME_BUS_A2BUS_A2SD_H +#define MAME_BUS_A2BUS_A2SD_H + +#pragma once + +#include "a2bus.h" +#include "machine/at28c64b.h" +#include "machine/spi_sdcard.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class a2bus_a2sd_device: + public device_t, + public device_a2bus_card_interface +{ +public: + // construction/destruction + a2bus_a2sd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + a2bus_a2sd_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + + virtual void device_start() override; + virtual void device_reset() override; + virtual void device_add_mconfig(machine_config &config) override; + virtual const tiny_rom_entry *device_rom_region() const override; + virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; + + // overrides of standard a2bus slot functions + virtual u8 read_c0nx(u8 offset) override; + virtual void write_c0nx(u8 offset, u8 data) override; + virtual u8 read_cnxx(u8 offset) override; + virtual void write_cnxx(u8 offset, u8 data) override; + virtual u8 read_c800(uint16_t offset) override; + virtual void write_c800(uint16_t offset, u8 data) override; + + // SPI 4-wire interface + WRITE_LINE_MEMBER(spi_miso_w) { m_in_bit = state; } + +private: + required_device<at28c64b_device> m_flash; + required_device<spi_sdcard_device> m_sdcard; + + u8 m_datain, m_in_latch, m_out_latch; + u8 m_c0n1, m_c0n3; + int m_in_bit; + + int m_shift_count; + emu_timer *m_shift_timer; +}; + +// device type definition +DECLARE_DEVICE_TYPE(A2BUS_A2SD, a2bus_a2sd_device) + +#endif // MAME_BUS_A2BUS_A2SD_H |
