2 Skelton for retropc emulator
5 Author : Takeda.Toshiya
16 /* ----------------------------------------------------------------------------
18 ---------------------------------------------------------------------------- */
24 /*****************************************************************************/
25 /* src/emu/devcpu.h */
27 // CPU interface functions
28 #define CPU_INIT_NAME(name) cpu_init_##name
29 #define CPU_INIT(name) void* CPU_INIT_NAME(name)()
30 #define CPU_INIT_CALL(name) CPU_INIT_NAME(name)()
32 #define CPU_RESET_NAME(name) cpu_reset_##name
33 #define CPU_RESET(name) void CPU_RESET_NAME(name)(h6280_Regs *cpustate)
34 #define CPU_RESET_CALL(name) CPU_RESET_NAME(name)(cpustate)
36 #define CPU_EXECUTE_NAME(name) cpu_execute_##name
37 #define CPU_EXECUTE(name) int CPU_EXECUTE_NAME(name)(h6280_Regs *cpustate)
38 #define CPU_EXECUTE_CALL(name) CPU_EXECUTE_NAME(name)(cpustate)
40 #define CPU_DISASSEMBLE_NAME(name) cpu_disassemble_##name
41 #define CPU_DISASSEMBLE(name) int CPU_DISASSEMBLE_NAME(name)(_TCHAR *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram)
42 #define CPU_DISASSEMBLE_CALL(name) CPU_DISASSEMBLE_NAME(name)(buffer, pc, oprom, oprom)
44 #define READ8_HANDLER(name) UINT8 name(h6280_Regs *cpustate, offs_t offset)
45 #define WRITE8_HANDLER(name) void name(h6280_Regs *cpustate, offs_t offset, UINT8 data)
47 /*****************************************************************************/
48 /* src/emu/didisasm.h */
50 // Disassembler constants
51 const UINT32 DASMFLAG_SUPPORTED = 0x80000000; // are disassembly flags supported?
52 const UINT32 DASMFLAG_STEP_OUT = 0x40000000; // this instruction should be the end of a step out sequence
53 const UINT32 DASMFLAG_STEP_OVER = 0x20000000; // this instruction should be stepped over by setting a breakpoint afterwards
54 const UINT32 DASMFLAG_OVERINSTMASK = 0x18000000; // number of extra instructions to skip when stepping over
55 const UINT32 DASMFLAG_OVERINSTSHIFT = 27; // bits to shift after masking to get the value
56 const UINT32 DASMFLAG_LENGTHMASK = 0x0000ffff; // the low 16-bits contain the actual length
58 /*****************************************************************************/
59 /* src/emu/diexec.h */
64 CLEAR_LINE = 0, // clear (a fired or held) line
65 ASSERT_LINE, // assert an interrupt immediately
66 HOLD_LINE, // hold interrupt line until acknowledged
67 PULSE_LINE // pulse interrupt line instantaneously (only for NMI, RESET)
80 #include "mame/emu/cpu/h6280/h6280.c"
82 #include "mame/emu/cpu/h6280/6280dasm.c"
87 void HUC6280::initialize()
89 opaque = CPU_INIT_CALL(h6280);
91 h6280_Regs *cpustate = (h6280_Regs *)opaque;
92 cpustate->program = d_mem;
96 cpustate->debugger = d_debugger;
97 cpustate->program_stored = d_mem;
98 cpustate->io_stored = d_io;
100 d_debugger->set_context_mem(d_mem);
101 d_debugger->set_context_io(d_io);
105 void HUC6280::release()
110 void HUC6280::reset()
112 h6280_Regs *cpustate = (h6280_Regs *)opaque;
114 CPU_RESET_CALL(h6280);
116 cpustate->program = d_mem;
120 cpustate->debugger = d_debugger;
121 cpustate->program_stored = d_mem;
122 cpustate->io_stored = d_io;
128 int HUC6280::run(int clock)
130 h6280_Regs *cpustate = (h6280_Regs *)opaque;
137 // run only one opcode
138 return CPU_EXECUTE_CALL(h6280);
142 int first_icount = icount;
144 // run cpu while given clocks
145 while(icount > 0 && !busreq) {
146 icount -= CPU_EXECUTE_CALL(h6280);
148 // if busreq is raised, spin cpu while remained clock
149 if(icount > 0 && busreq) {
152 return first_icount - icount;
156 void HUC6280::write_signal(int id, uint32_t data, uint32_t mask)
158 if(id == SIG_CPU_BUSREQ) {
159 busreq = ((data & mask) != 0);
161 h6280_Regs *cpustate = (h6280_Regs *)opaque;
162 set_irq_line(cpustate, id, data);
166 uint32_t HUC6280::get_pc()
168 h6280_Regs *cpustate = (h6280_Regs *)opaque;
169 return cpustate->ppc.w.l;
172 uint32_t HUC6280::get_next_pc()
174 h6280_Regs *cpustate = (h6280_Regs *)opaque;
175 return cpustate->pc.w.l;
178 uint8_t HUC6280::irq_status_r(uint16_t offset)
180 h6280_Regs *cpustate = (h6280_Regs *)opaque;
181 return h6280_irq_status_r(cpustate, offset);
184 void HUC6280::irq_status_w(uint16_t offset, uint8_t data)
186 h6280_Regs *cpustate = (h6280_Regs *)opaque;
187 h6280_irq_status_w(cpustate, offset, data);
190 uint8_t HUC6280::timer_r(uint16_t offset)
192 h6280_Regs *cpustate = (h6280_Regs *)opaque;
193 return h6280_timer_r(cpustate, offset);
196 void HUC6280::timer_w(uint16_t offset, uint8_t data)
198 h6280_Regs *cpustate = (h6280_Regs *)opaque;
199 h6280_timer_w(cpustate, offset, data);
203 void HUC6280::write_debug_data8(uint32_t addr, uint32_t data)
206 d_mem->write_data8w(addr, data, &wait);
209 uint32_t HUC6280::read_debug_data8(uint32_t addr)
212 return d_mem->read_data8w(addr, &wait);
215 void HUC6280::write_debug_io8(uint32_t addr, uint32_t data)
218 d_io->write_io8w(addr, data, &wait);
221 uint32_t HUC6280::read_debug_io8(uint32_t addr) {
223 return d_io->read_io8w(addr, &wait);
226 bool HUC6280::write_debug_reg(const _TCHAR *reg, uint32_t data)
228 h6280_Regs *cpustate = (h6280_Regs *)opaque;
229 if(_tcsicmp(reg, _T("PC")) == 0) {
230 cpustate->pc.w.l = data;
231 } if(_tcsicmp(reg, _T("SP")) == 0) {
232 cpustate->sp.w.l = data;
233 } if(_tcsicmp(reg, _T("ZP")) == 0) {
234 cpustate->zp.w.l = data;
235 } if(_tcsicmp(reg, _T("EA")) == 0) {
236 cpustate->ea.w.l = data;
237 } if(_tcsicmp(reg, _T("A")) == 0) {
239 } if(_tcsicmp(reg, _T("X")) == 0) {
241 } if(_tcsicmp(reg, _T("Y")) == 0) {
243 } if(_tcsicmp(reg, _T("P")) == 0) {
251 void HUC6280::get_debug_regs_info(_TCHAR *buffer, size_t buffer_len)
253 h6280_Regs *cpustate = (h6280_Regs *)opaque;
254 my_stprintf_s(buffer, buffer_len,
255 _T("PC = %04X SP = %04X ZP = %04X EA = %04X A = %02X X = %02X Y = %02X P = %02X"),
256 cpustate->pc.w.l, cpustate->sp.w.l, cpustate->zp.w.l, cpustate->ea.w.l, cpustate->a, cpustate->x, cpustate->y, cpustate->p);
261 int HUC6280::debug_dasm(uint32_t pc, _TCHAR *buffer, size_t buffer_len)
264 uint8_t *opram = oprom;
266 for(int i = 0; i < 8; i++) {
268 oprom[i] = d_mem->read_data8w(pc + i, &wait);
270 return CPU_DISASSEMBLE_CALL(h6280) & DASMFLAG_LENGTHMASK;
274 #define STATE_VERSION 3
276 void HUC6280::save_state(FILEIO* state_fio)
278 state_fio->FputUint32(STATE_VERSION);
279 state_fio->FputInt32(this_device_id);
281 state_fio->Fwrite(opaque, sizeof(h6280_Regs), 1);
282 state_fio->FputInt32(icount);
283 state_fio->FputBool(busreq);
286 bool HUC6280::load_state(FILEIO* state_fio)
288 if(state_fio->FgetUint32() != STATE_VERSION) {
291 if(state_fio->FgetInt32() != this_device_id) {
294 state_fio->Fread(opaque, sizeof(h6280_Regs), 1);
295 icount = state_fio->FgetInt32();
296 busreq = state_fio->FgetBool();
299 h6280_Regs *cpustate = (h6280_Regs *)opaque;
300 cpustate->program = d_mem;
304 cpustate->debugger = d_debugger;
305 cpustate->program_stored = d_mem;
306 cpustate->io_stored = d_io;