repos/blastem: rf5c164.c annotate

annotate rf5c164.c @ 2496:187bc857a76a default tip

Fix bug in MED mapper protection bit implementation

author	Michael Pavone <pavone@retrodev.com>
date	Sun, 28 Apr 2024 23:33:11 -0700
parents	c76c81c21ae5
children

rev	line source
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	1 #include <stdio.h>
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	2 #include "rf5c164.h"
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	3
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	4 enum {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	5 ENV,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	6 PAN,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	7 FDL,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	8 FDH,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	9 LSL,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	10 LSH,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	11 ST,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	12 CTRL,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	13 CHAN_ENABLE
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	14 };
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	15
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	16 enum {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	17 START,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	18 NORMAL,
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	19 LOOP
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	20 };
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	21
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	22 #define FLAG_SOUNDING 0x80
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	23 #define FLAG_PENDING 0x01
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	24
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	25 void rf5c164_init(rf5c164* pcm, uint32_t mclks, uint32_t divider)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	26 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	27 pcm->audio = render_audio_source("rf5c164", mclks, divider * 384, 2);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	28 pcm->clock_step = divider * 4;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	29 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	30
2164 4fbe1e7c4a73 Don't leak all Sega CD resources when freeing a Genesis instance Michael Pavone <pavone@retrodev.com> parents: 2145 diff changeset	31 void rf5c164_deinit(rf5c164* pcm)
4fbe1e7c4a73 Don't leak all Sega CD resources when freeing a Genesis instance Michael Pavone <pavone@retrodev.com> parents: 2145 diff changeset	32 {
4fbe1e7c4a73 Don't leak all Sega CD resources when freeing a Genesis instance Michael Pavone <pavone@retrodev.com> parents: 2145 diff changeset	33 render_free_source(pcm->audio);
4fbe1e7c4a73 Don't leak all Sega CD resources when freeing a Genesis instance Michael Pavone <pavone@retrodev.com> parents: 2145 diff changeset	34 }
4fbe1e7c4a73 Don't leak all Sega CD resources when freeing a Genesis instance Michael Pavone <pavone@retrodev.com> parents: 2145 diff changeset	35
2278 5a21bc0ec583 Implement turbo/slo mo for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2276 diff changeset	36 void rf5c164_adjust_master_clock(rf5c164* pcm, uint32_t mclks)
5a21bc0ec583 Implement turbo/slo mo for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2276 diff changeset	37 {
5a21bc0ec583 Implement turbo/slo mo for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2276 diff changeset	38 render_audio_adjust_clock(pcm->audio, mclks, pcm->clock_step * 96);
5a21bc0ec583 Implement turbo/slo mo for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2276 diff changeset	39 }
5a21bc0ec583 Implement turbo/slo mo for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2276 diff changeset	40
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	41 //48 cycles per channel
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	42 //1 external write per 16 cycles
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	43 //3 external writes per channel/sample
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	44 // TCE pulse width is 200ns @ 10Mhz aka 2 cycles
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	45 // total cycle is longer than TCE pulse, guessing 4 cycles
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	46 // 12 memory access slots per channel sample
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	47 // 3 for external memory writes
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	48 // 1 for internal register writes?
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	49 // 1 for refresh?
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	50 // 6 for register reads?
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	51 // or maybe 7 for register reads and writes happen when register is read?
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	52
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	53 #define CHECK pcm->cycle += pcm->clock_step; pcm->step++; if (pcm->cycle >= cycle) break
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	54 #define CHECK_LOOP pcm->cycle += pcm->clock_step; pcm->step = 0; if (pcm->cycle >= cycle) break
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	55
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	56 static void write_if_not_sounding(rf5c164* pcm)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	57 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	58 if (!(pcm->flags & FLAG_SOUNDING) && (pcm->flags & FLAG_PENDING)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	59 && pcm->pending_address >= 0x1000) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	60 pcm->ram[(pcm->pending_address & 0xFFF) \| pcm->ram_bank] = pcm->pending_byte;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	61 pcm->flags &= ~FLAG_PENDING;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	62 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	63 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	64
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	65 static void write_always(rf5c164* pcm)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	66 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	67 if ((pcm->flags & FLAG_PENDING) && pcm->pending_address >= 0x1000) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	68 pcm->ram[(pcm->pending_address & 0xFFF) \| pcm->ram_bank] = pcm->pending_byte;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	69 pcm->flags &= ~FLAG_PENDING;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	70 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	71 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	72
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	73 void rf5c164_run(rf5c164* pcm, uint32_t cycle)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	74 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	75 //TODO: Timing of this is all educated guesses based on documentation, do some real measurements
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	76 while (pcm->cycle < cycle)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	77 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	78 switch (pcm->step)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	79 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	80 case 0:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	81 //handle internal memory write
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	82 // RF5C164 datasheet seems to suggest only 1 "internal memory" write every 48 cycles when the chip is not sounding (globally)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	83 // and 1 write every 384 cycles when the chip is sounding (globally). However, games seem to expect to be able to write faster than that
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	84 // RF5C68 datasheet suggests internal memory writes are unrestricted regardless of sounding status
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	85 /*if ((pcm->cur_channel == pcm->selected_channel \|\| !(pcm->flags & FLAG_SOUNDING)) && (pcm->flags & FLAG_PENDING)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	86 && pcm->pending_address <= ST
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	87 ) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	88 printf("pcm_write commit chan %d, %X - %X @ %u\n", pcm->selected_channel, pcm->pending_address, pcm->pending_byte, pcm->cycle);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	89 pcm->channels[pcm->selected_channel].regs[pcm->pending_address] = pcm->pending_byte;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	90 pcm->flags &= ~FLAG_PENDING;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	91 }*/
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	92 write_if_not_sounding(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	93 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	94 case 1:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	95 if ((pcm->flags & FLAG_SOUNDING) && !(pcm->channel_enable & (1 << pcm->cur_channel))) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	96 if (pcm->channels[pcm->cur_channel].state == START) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	97 pcm->channels[pcm->cur_channel].cur_ptr = pcm->channels[pcm->cur_channel].regs[ST] << 19;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	98 //printf("chan %d START %X (%X raw)\n", pcm->cur_channel, pcm->channels[pcm->cur_channel].cur_ptr >> 11, pcm->channels[pcm->cur_channel].cur_ptr);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	99 pcm->channels[pcm->cur_channel].state = NORMAL;
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	100 pcm->channels[pcm->cur_channel].trigger = 1;
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	101 } else if (pcm->channels[pcm->cur_channel].state == LOOP) {
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	102 uint32_t old_ptr = pcm->channels[pcm->cur_channel].cur_ptr;
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	103 pcm->channels[pcm->cur_channel].cur_ptr = (pcm->channels[pcm->cur_channel].regs[LSH] << 19) \| (pcm->channels[pcm->cur_channel].regs[LSL] << 11);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	104 //printf("chan %d LOOP %X (%X raw)\n", pcm->cur_channel, pcm->channels[pcm->cur_channel].cur_ptr >> 11, pcm->channels[pcm->cur_channel].cur_ptr);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	105 pcm->channels[pcm->cur_channel].state = NORMAL;
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	106 pcm->channels[pcm->cur_channel].trigger = old_ptr != pcm->channels[pcm->cur_channel].cur_ptr;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	107 } else {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	108 pcm->channels[pcm->cur_channel].trigger = 0;
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	109 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	110 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	111 write_if_not_sounding(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	112 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	113 case 2: {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	114 if ((pcm->flags & FLAG_SOUNDING) && !(pcm->channel_enable & (1 << pcm->cur_channel))) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	115 uint8_t byte = pcm->ram[pcm->channels[pcm->cur_channel].cur_ptr >> 11];
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	116 if (byte == 0xFF) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	117 pcm->channels[pcm->cur_channel].state = LOOP;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	118 } else {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	119 pcm->channels[pcm->cur_channel].sample = byte;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	120 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	121 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	122 write_if_not_sounding(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	123 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	124 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	125 case 3:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	126 write_always(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	127 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	128 case 4:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	129 if ((pcm->flags & FLAG_SOUNDING) && !(pcm->channel_enable & (1 << pcm->cur_channel))) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	130 pcm->channels[pcm->cur_channel].cur_ptr += (pcm->channels[pcm->cur_channel].regs[FDH] << 8) \| pcm->channels[pcm->cur_channel].regs[FDL];
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	131 pcm->channels[pcm->cur_channel].cur_ptr &= 0x7FFFFFF;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	132 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	133 write_if_not_sounding(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	134 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	135 case 5:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	136 write_if_not_sounding(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	137 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	138 case 6:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	139 write_if_not_sounding(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	140 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	141 case 7:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	142 write_always(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	143 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	144 case 8:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	145 write_if_not_sounding(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	146 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	147 case 9:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	148 if ((pcm->flags & FLAG_SOUNDING) && !(pcm->channel_enable & (1 << pcm->cur_channel))) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	149 int16_t sample = pcm->channels[pcm->cur_channel].sample & 0x7F;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	150 if (!(pcm->channels[pcm->cur_channel].sample & 0x80)) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	151 sample = -sample;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	152 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	153 sample *= pcm->channels[pcm->cur_channel].regs[ENV];
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	154 int16_t left = (sample * (pcm->channels[pcm->cur_channel].regs[PAN] >> 4)) >> 5;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	155 int16_t right = (sample * (pcm->channels[pcm->cur_channel].regs[PAN] & 0xF)) >> 5;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	156 //printf("chan %d, raw %X, sample %d, left %d, right %d, ptr %X (raw %X)\n", pcm->cur_channel, pcm->channels[pcm->cur_channel].sample, sample, left, right, pcm->channels[pcm->cur_channel].cur_ptr >> 11, pcm->channels[pcm->cur_channel].cur_ptr);
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	157 #ifndef IS_LIB
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	158 if (pcm->scope) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	159 scope_add_sample(pcm->scope, pcm->channels[pcm->cur_channel].scope_channel, sample, pcm->channels[pcm->cur_channel].trigger);
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	160 }
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	161 #endif
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	162 pcm->left += left;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	163 pcm->right += right;
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	164 #ifdef IS_LIB
0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	165 }
0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	166 #else
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	167 } else if (pcm->scope) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	168 scope_add_sample(pcm->scope, pcm->channels[pcm->cur_channel].scope_channel, 0, 0);
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	169 }
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	170 #endif
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	171 write_if_not_sounding(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	172 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	173 case 10:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	174 //refresh?
2128 b0dcf5c9f353 Fix some issues with PCM dma/CPU write conflicts Michael Pavone <pavone@retrodev.com> parents: 2082 diff changeset	175 //does refresh happen at the same rate when sounding disabled? warning in sega docs suggests maybe not
b0dcf5c9f353 Fix some issues with PCM dma/CPU write conflicts Michael Pavone <pavone@retrodev.com> parents: 2082 diff changeset	176 write_if_not_sounding(pcm);
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	177 CHECK;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	178 case 11:
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	179 write_always(pcm);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	180 pcm->cur_channel++;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	181 pcm->cur_channel &= 7;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	182 if (!pcm->cur_channel) {
2145 62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	183 if (pcm->left > INT16_MAX) {
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	184 pcm->left = INT16_MAX;
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	185 } else if (pcm->left < INT16_MIN) {
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	186 pcm->left = INT16_MIN;
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	187 }
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	188 if (pcm->right > INT16_MAX) {
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	189 pcm->right = INT16_MAX;
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	190 } else if (pcm->right < INT16_MIN) {
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	191 pcm->right = INT16_MIN;
62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	192 }
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	193 render_put_stereo_sample(pcm->audio, pcm->left, pcm->right);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	194 pcm->left = pcm->right = 0;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	195 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	196 CHECK_LOOP;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	197 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	198 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	199 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	200
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	201 void rf5c164_write(rf5c164* pcm, uint16_t address, uint8_t value)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	202 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	203 //printf("pcm_write %X - %X @ %u\n", address, value, pcm->cycle);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	204 if (address == CTRL) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	205 pcm->flags &= ~FLAG_SOUNDING;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	206 pcm->flags \|= value & FLAG_SOUNDING;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	207 if (value & 0x40) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	208 pcm->selected_channel = value & 0x7;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	209 //printf("selected channel %d\n", pcm->selected_channel);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	210 } else {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	211 pcm->ram_bank = value << 12 & 0xF000;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	212 //printf("selected RAM bank %X\n", pcm->ram_bank);
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	213 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	214 if (!(pcm->flags & FLAG_SOUNDING)) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	215 pcm->left = pcm->right = 0;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	216 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	217 } else if (address == CHAN_ENABLE) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	218 uint8_t changed = pcm->channel_enable ^ value;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	219 pcm->channel_enable = value;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	220 for (int i = 0; i < 8; i++)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	221 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	222 int mask = 1 << i;
2145 62a53c052d9b PCM channel add should saturate on overflow, not wrap around Michael Pavone <pavone@retrodev.com> parents: 2128 diff changeset	223 if ((changed & mask) && !(mask & value)) {
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	224 pcm->channels[i].state = START;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	225 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	226 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	227 } else if (address <= ST) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	228 //See note in first step of rf5c164_run
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	229 pcm->channels[pcm->selected_channel].regs[address] = value;
2345 c76c81c21ae5 Fix stupid off by one in PCM RAM writes Michael Pavone <pavone@retrodev.com> parents: 2302 diff changeset	230 } else if (address >= 0x1000){
2082 485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	231 pcm->pending_address = address;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	232 pcm->pending_byte = value;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	233 pcm->flags \|= FLAG_PENDING;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	234 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	235 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	236
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	237 uint8_t rf5c164_read(rf5c164* pcm, uint16_t address)
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	238 {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	239 if (address >= 0x10 && address < 0x20) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	240 uint16_t chan = address >> 1 & 0x7;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	241 if (address & 1) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	242 return pcm->channels[chan].cur_ptr >> 19;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	243 } else {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	244 return pcm->channels[chan].cur_ptr >> 11;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	245 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	246 } else if (address >= 0x1000 && !(pcm->flags & FLAG_SOUNDING)) {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	247 return pcm->ram[pcm->ram_bank \| (address & 0xFFF)];
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	248 } else {
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	249 return 0xFF;
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	250 }
485834c0fea7 Forgot to add PCM source files Michael Pavone <pavone@retrodev.com> parents: diff changeset	251 }
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	252
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	253 void rf5c164_enable_scope(rf5c164* pcm, oscilloscope *scope)
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	254 {
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	255 #ifndef IS_LIB
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	256 static const char *names[] = {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	257 "Richo #1",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	258 "Richo #2",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	259 "Richo #3",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	260 "Richo #4",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	261 "Richo #5",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	262 "Richo #6",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	263 "Richo #7",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	264 "Richo #8",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	265 };
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	266 pcm->scope = scope;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	267 for (int i = 0; i < 8; i ++)
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	268 {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	269 pcm->channels[i].scope_channel = scope_add_channel(scope, names[i], 50000000 / (pcm->clock_step * 96));
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	270 }
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	271 #endif
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2164 diff changeset	272 }
2280 9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	273
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	274 void rf5c164_serialize(rf5c164* pcm, serialize_buffer *buf)
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	275 {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	276 save_int32(buf, pcm->cycle);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	277 save_buffer16(buf, pcm->ram, sizeof(pcm->ram)/sizeof(*pcm->ram));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	278 save_int16(buf, pcm->ram_bank);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	279 save_int16(buf, pcm->pending_address);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	280 save_int32(buf, pcm->left);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	281 save_int32(buf, pcm->right);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	282 for (int i = 0; i < 8; i++)
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	283 {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	284 rf5c164_channel *chan = pcm->channels + i;
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	285 save_int32(buf, chan->cur_ptr);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	286 save_buffer8(buf, chan->regs, sizeof(chan->regs));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	287 save_int8(buf, chan->sample);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	288 }
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	289 save_int8(buf, pcm->pending_byte);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	290 save_int8(buf, pcm->channel_enable);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	291 save_int8(buf, pcm->selected_channel);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	292 save_int8(buf, pcm->cur_channel);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	293 save_int8(buf, pcm->step);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	294 save_int8(buf, pcm->flags);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	295 }
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	296
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	297 void rf5c164_deserialize(deserialize_buffer buf, void vpcm)
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	298 {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	299 rf5c164 *pcm = vpcm;
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	300 pcm->cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	301 load_buffer16(buf, pcm->ram, sizeof(pcm->ram)/sizeof(*pcm->ram));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	302 pcm->ram_bank = load_int16(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	303 pcm->pending_address = load_int16(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	304 pcm->left = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	305 pcm->right = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	306 for (int i = 0; i < 8; i++)
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	307 {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	308 rf5c164_channel *chan = pcm->channels + i;
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	309 chan->cur_ptr = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	310 load_buffer8(buf, chan->regs, sizeof(chan->regs));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	311 chan->sample = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	312 }
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	313 pcm->pending_byte = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	314 pcm->channel_enable = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	315 pcm->selected_channel = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	316 pcm->cur_channel = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	317 pcm->step = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	318 pcm->flags = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2278 diff changeset	319 }

Mercurial > repos > blastem

annotate rf5c164.c @ 2496:187bc857a76a default tip