Mercurial > repos > blastem

comparison sms.c @ 1209:5ee6b6345ea9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implement SMS hardware soft reset (note only available on real hardware on the Genesis in PBC mode)
author Michael Pavone <pavone@retrodev.com>
date Fri, 27 Jan 2017 22:30:52 -0800
parents aee2177a1630
children 071e761bcdcf
comparison
equal deleted inserted replaced
1208:95f5253e75c7 1209:5ee6b6345ea9
200 if (system->enter_debugger && sms->z80->pc) { 200 if (system->enter_debugger && sms->z80->pc) {
201 system->enter_debugger = 0; 201 system->enter_debugger = 0;
202 zdebugger(sms->z80, sms->z80->pc); 202 zdebugger(sms->z80, sms->z80->pc);
203 } 203 }
204 z80_run(sms->z80, target_cycle); 204 z80_run(sms->z80, target_cycle);
205 if (sms->z80->reset) {
206 z80_clear_reset(sms->z80, sms->z80->current_cycle + 128*15);
207 }
205 target_cycle = sms->z80->current_cycle; 208 target_cycle = sms->z80->current_cycle;
206 vdp_run_context(sms->vdp, target_cycle); 209 vdp_run_context(sms->vdp, target_cycle);
207 psg_run(sms->psg, target_cycle); 210 psg_run(sms->psg, target_cycle);
208 target_cycle += 3420*262; 211 target_cycle += 3420*262;
209 if (target_cycle > 0x10000000) { 212 if (target_cycle > 0x10000000) {
232 235
233 z80_assert_reset(sms->z80, 0); 236 z80_assert_reset(sms->z80, 0);
234 z80_clear_reset(sms->z80, 128*15); 237 z80_clear_reset(sms->z80, 128*15);
235 238
236 run_sms(system); 239 run_sms(system);
240 }
241
242 static void soft_reset(system_header *system)
243 {
244 sms_context *sms = (sms_context *)system;
245 z80_assert_reset(sms->z80, sms->z80->current_cycle);
246 sms->z80->target_cycle = sms->z80->sync_cycle = sms->z80->current_cycle;
237 } 247 }
238 248
239 static void free_sms(system_header *system) 249 static void free_sms(system_header *system)
240 { 250 {
241 sms_context *sms = (sms_context *)system; 251 sms_context *sms = (sms_context *)system;
339 sms->header.load_save = NULL; 349 sms->header.load_save = NULL;
340 sms->header.persist_save = NULL; 350 sms->header.persist_save = NULL;
341 sms->header.free_context = free_sms; 351 sms->header.free_context = free_sms;
342 sms->header.get_open_bus_value = get_open_bus_value; 352 sms->header.get_open_bus_value = get_open_bus_value;
343 sms->header.request_exit = request_exit; 353 sms->header.request_exit = request_exit;
354 sms->header.soft_reset = soft_reset;
344 sms->header.inc_debug_mode = inc_debug_mode; 355 sms->header.inc_debug_mode = inc_debug_mode;
345 sms->header.inc_debug_pal = inc_debug_pal; 356 sms->header.inc_debug_pal = inc_debug_pal;
346 357
347 return sms; 358 return sms;
348 } 359 }