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comparison m68k_util.c @ 2577:5f725429d08f

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WIP changes to new CPU core for rotate instructions and to get interrupts more functional
author Michael Pavone <pavone@retrodev.com>
date Fri, 07 Feb 2025 08:57:24 -0800
parents d44fe974fb85
children 939b818df589
comparison
equal deleted inserted replaced
2576:c9bfed9156dc 2577:5f725429d08f
24 write_word(context->scratch2, context->scratch1, context->mem_pointers, &context->opts->gen, context); 24 write_word(context->scratch2, context->scratch1, context->mem_pointers, &context->opts->gen, context);
25 } 25 }
26 26
27 void m68k_sync_cycle(m68k_context *context, uint32_t target_cycle) 27 void m68k_sync_cycle(m68k_context *context, uint32_t target_cycle)
28 { 28 {
29 //TODO: interrupt stuff 29 context->sync_cycle = target_cycle; //why?
30 context->sync_cycle = target_cycle; 30 context->sync_components(context, 0);
31 } 31 }
32 32
33 void init_m68k_opts(m68k_options *opts, memmap_chunk * memmap, uint32_t num_chunks, uint32_t clock_divider, sync_fun sync_components, int_ack_fun int_ack) 33 static sync_fun *sync_comp_tmp;
34 static int_ack_fun int_ack_tmp;
35 void init_m68k_opts(m68k_options *opts, memmap_chunk * memmap, uint32_t num_chunks, uint32_t clock_divider, sync_fun *sync_components, int_ack_fun int_ack)
34 { 36 {
35 memset(opts, 0, sizeof(*opts)); 37 memset(opts, 0, sizeof(*opts));
36 opts->gen.memmap = memmap; 38 opts->gen.memmap = memmap;
37 opts->gen.memmap_chunks = num_chunks; 39 opts->gen.memmap_chunks = num_chunks;
38 opts->gen.address_mask = 0xFFFFFF; 40 opts->gen.address_mask = 0xFFFFFF;
39 opts->gen.byte_swap = 1; 41 opts->gen.byte_swap = 1;
40 opts->gen.max_address = 0x1000000; 42 opts->gen.max_address = 0x1000000;
41 opts->gen.bus_cycles = 4; 43 opts->gen.bus_cycles = 4;
42 opts->gen.clock_divider = clock_divider; 44 opts->gen.clock_divider = clock_divider;
45 sync_comp_tmp = sync_components;
46 int_ack_tmp = int_ack;
43 } 47 }
44 48
45 m68k_context *init_68k_context(m68k_options * opts, m68k_reset_handler reset_handler) 49 m68k_context *init_68k_context(m68k_options * opts, m68k_reset_handler *reset_handler)
46 { 50 {
47 m68k_context *context = calloc(1, sizeof(m68k_context)); 51 m68k_context *context = calloc(1, sizeof(m68k_context));
48 context->opts = opts; 52 context->opts = opts;
49 context->reset_handler = reset_handler; 53 context->reset_handler = reset_handler;
50 context->int_cycle = 0xFFFFFFFFU; 54 context->int_cycle = 0xFFFFFFFFU;
55 context->sync_components = sync_comp_tmp;
56 sync_comp_tmp = NULL;
57 context->int_ack_handler = int_ack_tmp;
58 int_ack_tmp = NULL;
51 return context; 59 return context;
52 } 60 }
53 61
54 void m68k_reset(m68k_context *context) 62 void m68k_reset(m68k_context *context)
55 { 63 {