// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Coleco Adam Internal 64KB RAM Expansion emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "adam_ram.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type ADAM_RAM = &device_creator; //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // adam_ram_expansion_device - constructor //------------------------------------------------- adam_ram_expansion_device::adam_ram_expansion_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, ADAM_RAM, "Adam 64KB RAM expansion", tag, owner, clock, "adam_ram", __FILE__), device_adam_expansion_slot_card_interface(mconfig, *this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void adam_ram_expansion_device::device_start() { adam_ram_pointer(machine(), 64 * 1024); } //------------------------------------------------- // adam_bd_r - buffered data read //------------------------------------------------- UINT8 adam_ram_expansion_device::adam_bd_r(address_space &space, offs_t offset, UINT8 data, int bmreq, int biorq, int aux_rom_cs, int cas1, int cas2) { if (!cas2) { data = m_ram[offset]; } return data; } //------------------------------------------------- // adam_bd_w - buffered data write //------------------------------------------------- void adam_ram_expansion_device::adam_bd_w(address_space &space, offs_t offset, UINT8 data, int bmreq, int biorq, int aux_rom_cs, int cas1, int cas2) { if (!cas2) { m_ram[offset] = data; } }