// license:BSD-3-Clause // copyright-holders:Patrick Mackinlay #ifndef MAME_CPU_NS32000_COMMON_H #define MAME_CPU_NS32000_COMMON_H #pragma once namespace ns32000 { enum st_mask : unsigned { ST_ICI = 0x0, // bus idle (CPU busy) ST_ICW = 0x1, // bus idle (CPU wait) ST_ISE = 0x3, // bus idle (slave execution) ST_IAM = 0x4, // interrupt acknowledge, master ST_IAC = 0x5, // interrupt acknowledge, cascaded ST_EIM = 0x6, // end of interrupt, master ST_EIC = 0x7, // end of interrupt, cascaded ST_SIF = 0x8, // sequential instruction fetch ST_NIF = 0x9, // non-sequential instruction fetch ST_ODT = 0xa, // operand data transfer ST_RMW = 0xb, // read RMW operand ST_EAR = 0xc, // effective address read ST_SOP = 0xd, // slave operand ST_SST = 0xe, // slave status ST_SID = 0xf, // slave ID ST_PT1 = 0xd, // access pte1 by MMU (32532) ST_PT2 = 0xe, // access pte2 by MMU (32532) ST_SLV = 0x10, // slave access ST4 (32532) }; } class ns32000_slave_interface : public device_interface { public: auto out_spc() { return m_out_spc.bind(); } ns32000_slave_interface(machine_config const &mconfig, device_t &device) : ns32000_slave_interface(mconfig, device, "ns32000_slave") { } enum slave_idbyte : u8 { FORMAT_9 = 0x3e, // fpu FORMAT_11 = 0xbe, // fpu FORMAT_12 = 0xfe, // fpu FORMAT_14 = 0x1e, // mmu }; enum slave_status : u16 { SLAVE_Q = 0x0001, // quit (1=error) SLAVE_L = 0x0004, SLAVE_F = 0x0020, SLAVE_Z = 0x0040, SLAVE_N = 0x0080, SLAVE_TS = 0x8000, // trap status (1=UND, 0=FPU) SLAVE_OK = 0, }; virtual void state_add(device_state_interface &parent, int &index) = 0; protected: ns32000_slave_interface(machine_config const &mconfig, device_t &device, char const *type) : device_interface(device, type) , m_out_spc(*this) { } devcb_write_line m_out_spc; }; class ns32000_fpu_interface : public ns32000_slave_interface { protected: ns32000_fpu_interface(machine_config const &mconfig, device_t &device) : ns32000_slave_interface(mconfig, device) { } }; class ns32000_mmu_interface : public ns32000_slave_interface { public: enum translate_result : unsigned { COMPLETE, CANCEL, ABORT }; virtual translate_result translate(address_space &space, unsigned st, u32 &address, bool user, bool write, bool flag = false, bool suppress = false) = 0; protected: ns32000_mmu_interface(machine_config const &mconfig, device_t &device) : ns32000_slave_interface(mconfig, device) { } }; class ns32000_slow_slave_interface : public device_interface { public: virtual u16 slow_status(int *icount = nullptr) = 0; virtual u16 slow_read() = 0; virtual void slow_write(u16 data) = 0; protected: ns32000_slow_slave_interface(machine_config const &mconfig, device_t &device) : device_interface(device, "ns32000_slave_slow") { } }; class ns32000_fast_slave_interface : public device_interface { public: virtual u32 fast_status(int *icount = nullptr) = 0; virtual u32 fast_read() = 0; virtual void fast_write(u32 data) = 0; protected: ns32000_fast_slave_interface(machine_config const &mconfig, device_t &device) : device_interface(device, "ns32000_slave_fast") { } }; #endif // MAME_CPU_NS32000_COMMON_H