diff options
| author | Michael Pavone <pavone@retrodev.com> | 2017-03-18 23:18:37 -0700 |
|---|---|---|
| committer | Michael Pavone <pavone@retrodev.com> | 2017-03-18 23:18:37 -0700 |
| commit | 64f0b10ed617f4fbfcfc93625b8ca09a44f58615 (patch) | |
| tree | 36acf7578425548cb15f2d352c096bcb9c79d3af /genesis.c | |
| parent | 401596ec874495e53dc65290f08393fc9aed804d (diff) | |
Basic refresh emulation that doesn't break direct color DMA demos. Fixes sound after entering pause menu in Pacman 2: The New Adventures
Diffstat (limited to 'genesis.c')
| -rw-r--r-- | genesis.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -144,6 +144,7 @@ static void sync_sound(genesis_context * gen, uint32_t target) static uint32_t last_frame_num; //My refresh emulation isn't currently good enough and causes more problems than it solves +#define REFRESH_EMULATION #ifdef REFRESH_EMULATION #define REFRESH_INTERVAL 128 #define REFRESH_DELAY 2 @@ -322,6 +323,7 @@ static m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, context->current_cycle += m68k_cycle_diff; #ifdef REFRESH_EMULATION last_sync_cycle = context->current_cycle; + refresh_counter = 0; #endif //Lock the Z80 out of the bus until the VDP access is complete gen->bus_busy = 1; @@ -396,7 +398,7 @@ static uint16_t vdp_port_read(uint32_t vdp_port, m68k_context * context) if (v_context->cycles != before_cycle) { //printf("68K paused for %d (%d) cycles at cycle %d (%d) for read\n", v_context->cycles - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle); context->current_cycle = v_context->cycles; -#ifdef REFRES_EMULATION +#ifdef REFRESH_EMULATION last_sync_cycle = context->current_cycle; #endif //Lock the Z80 out of the bus until the VDP access is complete |