diff options
Diffstat (limited to 'src/devices/bus/msx_slot/ram.h')
-rw-r--r-- | src/devices/bus/msx_slot/ram.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/devices/bus/msx_slot/ram.h b/src/devices/bus/msx_slot/ram.h new file mode 100644 index 00000000000..1b85ee8ac5d --- /dev/null +++ b/src/devices/bus/msx_slot/ram.h @@ -0,0 +1,36 @@ +// license:BSD-3-Clause +// copyright-holders:Wilbert Pol +#ifndef __MSX_SLOT_RAM_H +#define __MSX_SLOT_RAM_H + +#include "slot.h" + +#define MCFG_MSX_SLOT_RAM_ADD(_tag, _startpage, _numpages) \ + MCFG_MSX_INTERNAL_SLOT_ADD(_tag, MSX_SLOT_RAM, _startpage, _numpages) + +#define MCFG_MSX_SLOT_RAM_8KB \ + msx_slot_ram_device::force_start_address(*device, 0xe000); + + +class msx_slot_ram_device : public device_t, + public msx_internal_slot_interface +{ +public: + msx_slot_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + static void force_start_address(device_t &device, UINT16 start) { downcast<msx_slot_ram_device &>(device).m_start_address = start; } + + virtual void device_start(); + + virtual DECLARE_READ8_MEMBER(read); + virtual DECLARE_WRITE8_MEMBER(write); + +private: + std::vector<UINT8> m_ram; +}; + + +extern const device_type MSX_SLOT_RAM; + + +#endif |