diff options
| -rw-r--r-- | ym2612.c | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -95,6 +95,10 @@ void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t clock_rate context->operators[i].envelope = MAX_ENVELOPE; context->operators[i].env_phase = PHASE_RELEASE; } + //some games seem to expect that the LR flags start out as 1 + for (int i = 0; i < NUM_CHANNELS; i++) { + context->channels[i].lr = 0xC0; + } if (!did_tbl_init) { //populate sine table for (int32_t i = 0; i < 512; i++) { @@ -478,7 +482,7 @@ void ym_data_write(ym2612_context * context, uint8_t value) case REG_DAC: if (context->dac_enable) { context->channels[5].output = (((int16_t)value) - 0x80) << 6; - //printf("DAC Write %X(%d)\n", context->channels[5].output, context->channels[5].output); + //printf("DAC Write %X(%d)\n", value, context->channels[5].output); } break; case REG_DAC_ENABLE: @@ -567,13 +571,13 @@ void ym_data_write(ym2612_context * context, uint8_t value) context->channels[channel].pms = value & 0x7; context->channels[channel].ams = value >> 4 & 0x3; context->channels[channel].lr = value & 0xC0; + //printf("Write of %X to LR_AMS_PMS reg for channel %d\n", value, channel); break; } } } context->write_cycle = context->current_cycle; - context->selected_reg = 0;//TODO: Verify this } uint8_t ym_read_status(ym2612_context * context) |