// license:BSD-3-Clause // copyright-holders:AJR /*************************************************************************** Taxan KY-80 This 100-pin QFP device seems to be a custom derivative of the Kawasaki KC82 CPU core (fast Z80-like with built-in MMU). It seems possible that it was built entirely out of Kawasaki LSI macrocells, but the on-chip peripherals are at least mapped differently than in either KL5C80A12 or KL5C80A16 (in the top 3/8ths of the I/O space rather the bottom quarter). On-chip features appear to include 1024 bytes of RAM, an interrupt controller (not quite the same as KP69), a KP63-like timer/counter block, 5 parallel ports and 2 8251-like serial ports. ***************************************************************************/ #include "emu.h" #include "ky80.h" // device type definition DEFINE_DEVICE_TYPE(KY80, ky80_device, "ky80", "Taxan KY-80") //------------------------------------------------- // ky80_device - constructor //------------------------------------------------- ky80_device::ky80_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) : kc82_device(mconfig, KY80, tag, owner, clock, address_map_constructor(FUNC(ky80_device::internal_ram), this), address_map_constructor(FUNC(ky80_device::internal_io), this)) { } //------------------------------------------------- // internal_ram - map for high-speed internal RAM //------------------------------------------------- void ky80_device::internal_ram(address_map &map) { map(0xffc00, 0xfffff).ram().share("ram"); } //------------------------------------------------- // internal_io - map for internal I/O registers //------------------------------------------------- void ky80_device::internal_io(address_map &map) { map(0xa0, 0xa7).mirror(0xff00).rw(FUNC(ky80_device::mmu_r), FUNC(ky80_device::mmu_w)); }