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Diffstat (limited to 'src/devices/bus/tanbus/ra32k.h')
-rw-r--r-- | src/devices/bus/tanbus/ra32k.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/devices/bus/tanbus/ra32k.h b/src/devices/bus/tanbus/ra32k.h new file mode 100644 index 00000000000..a67e9c859bb --- /dev/null +++ b/src/devices/bus/tanbus/ra32k.h @@ -0,0 +1,59 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/********************************************************************** + + Ralph Allen 32K Dynamic RAM Board + +**********************************************************************/ + + +#ifndef MAME_BUS_TANBUS_RA32K_H +#define MAME_BUS_TANBUS_RA32K_H + +#pragma once + +#include "bus/tanbus/tanbus.h" +#include "bus/tanbus/ra32k.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class tanbus_ra32k_device : + public device_t, + public device_tanbus_interface +{ +public: + // construction/destruction + tanbus_ra32k_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + // device-level overrides + virtual void device_start() override; + virtual void device_reset() override; + + // optional information overrides + virtual const tiny_rom_entry *device_rom_region() const override; + virtual ioport_constructor device_input_ports() const override; + + virtual uint8_t read(offs_t offset, int inhrom, int inhram, int be) override; + virtual void write(offs_t offset, uint8_t data, int inhrom, int inhram, int be) override; + +private: + required_memory_region m_rom; + required_ioport_array<3> m_dsw; + required_ioport m_link; + + offs_t m_addr_start; + offs_t m_addr_end; + std::unique_ptr<uint8_t[]> m_ram; + + bool block_enabled(offs_t offset, int inhrom, int inhram, int be); +}; + + +// device type definition +DECLARE_DEVICE_TYPE(TANBUS_RA32K, tanbus_ra32k_device) + + +#endif // MAME_BUS_TANBUS_RA32K_H |