Mercurial > repos > blastem
diff blastem.c @ 198:209a37eed3e7
Add support for breaking into the debugger while game is running
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Sun, 20 Jan 2013 19:10:29 -0800 |
| parents | 7c227a8ec53d |
| children | 464513050c85 |
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--- a/blastem.c Thu Jan 17 20:00:07 2013 -0800 +++ b/blastem.c Sun Jan 20 19:10:29 2013 -0800 @@ -118,7 +118,9 @@ } } -m68k_context * sync_components(m68k_context * context) +int break_on_sync = 0; + +m68k_context * sync_components(m68k_context * context, uint32_t address) { //TODO: Handle sync targets smaller than a single frame vdp_context * v_context = context->next_context; @@ -126,7 +128,7 @@ if (mclks >= MCLKS_PER_FRAME) { //printf("reached frame end | 68K Cycles: %d, MCLK Cycles: %d\n", context->current_cycle, mclks); vdp_run_context(v_context, MCLKS_PER_FRAME); - wait_render_frame(v_context); + break_on_sync |= wait_render_frame(v_context); mclks -= MCLKS_PER_FRAME; vdp_adjust_cycles(v_context, MCLKS_PER_FRAME); io_adjust_cycles(&gamepad_1, context->current_cycle, MCLKS_PER_FRAME/MCLKS_PER_68K); @@ -140,13 +142,17 @@ vdp_run_context(v_context, mclks); } adjust_int_cycle(context, v_context); + if (break_on_sync && address) { + break_on_sync = 0; + debugger(context, address); + } return context; } m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value) { //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle); - sync_components(context); + sync_components(context, 0); vdp_context * v_context = context->next_context; if (vdp_port < 0x10) { int blocked; @@ -201,7 +207,7 @@ m68k_context * vdp_port_read(uint32_t vdp_port, m68k_context * context) { - sync_components(context); + sync_components(context, 0); vdp_context * v_context = context->next_context; if (vdp_port < 0x10) { if (vdp_port < 4) {