Mercurial > repos > blastem

comparison genesis.c @ 1479:a568dca999b2 nuklear_ui

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix genesis save state loading via Nuklear UI, sms probably still needs work
author Michael Pavone <pavone@retrodev.com>
date Fri, 24 Nov 2017 20:52:40 -0800
parents da1dce39e846
children c59adc305e46
comparison
equal deleted inserted replaced
1478:da1dce39e846 1479:a568dca999b2
994 gen->normal_clock = MCLKS_NTSC; 994 gen->normal_clock = MCLKS_NTSC;
995 } 995 }
996 gen->master_clock = gen->normal_clock; 996 gen->master_clock = gen->normal_clock;
997 } 997 }
998 998
999 static void handle_reset_requests(genesis_context *gen)
1000 {
1001 while (gen->reset_requested)
1002 {
1003 gen->reset_requested = 0;
1004 z80_assert_reset(gen->z80, gen->m68k->current_cycle);
1005 z80_clear_busreq(gen->z80, gen->m68k->current_cycle);
1006 ym_reset(gen->ym);
1007 //Is there any sort of VDP reset?
1008 m68k_reset(gen->m68k);
1009 }
1010 vdp_release_framebuffer(gen->vdp);
1011 }
1012
1013 #include "m68k_internal.h" //needed for get_native_address_trans, should be eliminated once handling of PC is cleaned up 999 #include "m68k_internal.h" //needed for get_native_address_trans, should be eliminated once handling of PC is cleaned up
1014 static uint8_t load_state(system_header *system, uint8_t slot) 1000 static uint8_t load_state(system_header *system, uint8_t slot)
1015 { 1001 {
1016 genesis_context *gen = (genesis_context *)system; 1002 genesis_context *gen = (genesis_context *)system;
1017 char numslotname[] = "slot_0.state"; 1003 char *statepath = get_slot_name(system, slot, "state");
1018 char *slotname;
1019 if (slot == QUICK_SAVE_SLOT) {
1020 slotname = "quicksave.state";
1021 } else {
1022 numslotname[5] = '0' + slot;
1023 slotname = numslotname;
1024 }
1025 char const *parts[] = {gen->header.save_dir, PATH_SEP, slotname};
1026 char *statepath = alloc_concat_m(3, parts);
1027 deserialize_buffer state; 1004 deserialize_buffer state;
1028 uint32_t pc = 0; 1005 uint32_t pc = 0;
1029 uint8_t ret; 1006 uint8_t ret;
1007 if (!gen->m68k->resume_pc) {
1008 system->delayed_load_slot = slot + 1;
1009 gen->m68k->should_return = 1;
1010 ret = get_modification_time(statepath) != 0;
1011 if (!ret) {
1012 strcpy(statepath + strlen(statepath)-strlen("state"), "gst");
1013 ret = get_modification_time(statepath) != 0;
1014 }
1015 goto done;
1016 }
1030 if (load_from_file(&state, statepath)) { 1017 if (load_from_file(&state, statepath)) {
1031 genesis_deserialize(&state, gen); 1018 genesis_deserialize(&state, gen);
1032 free(state.data); 1019 free(state.data);
1033 //HACK 1020 //HACK
1034 pc = gen->m68k->last_prefetch_address; 1021 pc = gen->m68k->last_prefetch_address;
1039 ret = pc != 0; 1026 ret = pc != 0;
1040 } 1027 }
1041 if (ret) { 1028 if (ret) {
1042 gen->m68k->resume_pc = get_native_address_trans(gen->m68k, pc); 1029 gen->m68k->resume_pc = get_native_address_trans(gen->m68k, pc);
1043 } 1030 }
1031 done:
1044 free(statepath); 1032 free(statepath);
1045 return ret; 1033 return ret;
1034 }
1035
1036 static void handle_reset_requests(genesis_context *gen)
1037 {
1038 while (gen->reset_requested || gen->header.delayed_load_slot)
1039 {
1040 if (gen->reset_requested) {
1041 gen->reset_requested = 0;
1042 z80_assert_reset(gen->z80, gen->m68k->current_cycle);
1043 z80_clear_busreq(gen->z80, gen->m68k->current_cycle);
1044 ym_reset(gen->ym);
1045 //Is there any sort of VDP reset?
1046 m68k_reset(gen->m68k);
1047 }
1048 if (gen->header.delayed_load_slot) {
1049 load_state(&gen->header, gen->header.delayed_load_slot - 1);
1050 gen->header.delayed_load_slot = 0;
1051 resume_68k(gen->m68k);
1052 }
1053 }
1054 vdp_release_framebuffer(gen->vdp);
1046 } 1055 }
1047 1056
1048 static void start_genesis(system_header *system, char *statefile) 1057 static void start_genesis(system_header *system, char *statefile)
1049 { 1058 {
1050 genesis_context *gen = (genesis_context *)system; 1059 genesis_context *gen = (genesis_context *)system;