// license:BSD-3-Clause // copyright-holders:AJR #include "emu.h" #include "i8755.h" // device type definition DEFINE_DEVICE_TYPE(SDK85_I8755, sdk85exp_i8755_device, "sdk85exp_i8755", "SDK-85 PROM I/O Expansion (Intel 8755)") sdk85exp_i8755_device::sdk85exp_i8755_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : device_t(mconfig, SDK85_I8755, tag, owner, clock) , device_sdk85_romexp_card_interface(mconfig, *this) , m_i8755(*this, "i8755") { } void sdk85exp_i8755_device::device_start() { } u8 sdk85exp_i8755_device::read_memory(offs_t offset) { return m_i8755->memory_r(offset); } void sdk85exp_i8755_device::write_memory(offs_t offset, u8 data) { logerror("Writing %02Xh to base + %03Xh\n", data, offset); m_i8755->io_w(offset & 3, data); } u8 sdk85exp_i8755_device::read_io(offs_t offset) { return m_i8755->io_r(offset & 3); } void sdk85exp_i8755_device::write_io(offs_t offset, u8 data) { m_i8755->io_w(offset & 3, data); } void sdk85exp_i8755_device::device_add_mconfig(machine_config &config) { I8355(config, m_i8755, DERIVED_CLOCK(1, 1)); } u8 *sdk85exp_i8755_device::get_rom_base(u32 size) { if (size != 0x800) { osd_printf_error("sdk85exp_i8755: Data length must be 2,048 bytes\n"); return nullptr; } return memregion("i8755")->base(); } ROM_START(sdk85exp_i8755) ROM_REGION(0x800, "i8755", ROMREGION_ERASE00) ROM_END const tiny_rom_entry *sdk85exp_i8755_device::device_rom_region() const { return ROM_NAME(sdk85exp_i8755); }