// license:BSD-3-Clause // copyright-holders:hap /* Rockwell A5500 MCU */ #include "emu.h" #include "a5500.h" #include "rw5000d.h" DEFINE_DEVICE_TYPE(A5500, a5500_cpu_device, "a5500", "Rockwell A5500") // constructor a5500_cpu_device::a5500_cpu_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, int prgwidth, address_map_constructor program, int datawidth, address_map_constructor data) : a5000_cpu_device(mconfig, type, tag, owner, clock, prgwidth, program, datawidth, data) { } a5500_cpu_device::a5500_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : a5500_cpu_device(mconfig, A5500, tag, owner, clock, 10, address_map_constructor(FUNC(a5500_cpu_device::program_768x8), this), 6, address_map_constructor(FUNC(a5500_cpu_device::data_48x4), this)) { } // internal memory maps void a5500_cpu_device::program_768x8(address_map &map) { map(0x000, 0x27f).rom(); map(0x380, 0x3ff).rom(); } void a5500_cpu_device::data_48x4(address_map &map) { map(0x00, 0x0b).ram(); map(0x10, 0x1b).ram(); map(0x20, 0x2b).ram(); map(0x30, 0x3b).ram(); } // disasm std::unique_ptr a5500_cpu_device::create_disassembler() { return std::make_unique(); } //------------------------------------------------- // execute //------------------------------------------------- void a5500_cpu_device::execute_one() { switch (m_op) { case 0x1c: case 0x1d: case 0x1e: case 0x1f: op_lb(11); break; case 0x38: case 0x39: case 0x3a: case 0x3b: op_tl(); break; case 0x0c: op_sc(); break; case 0x0d: op_rsc(); break; // rest is same as A5000 default: a5000_cpu_device::execute_one(); break; } } bool a5500_cpu_device::op_is_tl(u8 op) { return a5000_cpu_device::op_is_tl(op) || ((op & 0xfc) == 0x38); } bool a5500_cpu_device::op_is_lb(u8 op) { return a5000_cpu_device::op_is_lb(op) || ((op & 0xfc) == 0x1c); }