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dreamcast/example/aica/aica_xm.cpp

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#include "holly/background.hpp"
#include "holly/core.hpp"
#include "holly/core_bits.hpp"
#include "holly/holly.hpp"
#include "holly/isp_tsp.hpp"
#include "holly/region_array.hpp"
#include "holly/ta_bits.hpp"
#include "holly/ta_fifo_polygon_converter.hpp"
#include "holly/ta_global_parameter.hpp"
#include "holly/ta_parameter.hpp"
#include "holly/ta_vertex_parameter.hpp"
#include "holly/texture_memory_alloc5.hpp"
#include "holly/video_output.hpp"
#include "memorymap.hpp"
#include "systembus.hpp"
#include "systembus_bits.hpp"
#include "aica/aica.hpp"
#include "sh7091/sh7091.hpp"
#include "sh7091/sh7091_bits.hpp"
#include "sh7091/serial.hpp"
#include "printf/printf.h"
#include "math/float_types.hpp"
#include "assert.h"
//#include "example/arm/xm.bin.h"
#include "xm/xm.h"
#include "xm/milkypack01.xm.h"
#include "xm/middle_c.xm.h"
#include "xm/test.xm.h"
#include "xm/xmtest.xm.h"
#include "xm/catch_this_rebel.xm.h"
#include "interrupt.hpp"
constexpr int max_patterns = 64;
constexpr int max_instruments = 128;
struct xm_state {
xm_header_t * header;
xm_pattern_header_t * pattern_header[max_patterns];
xm_instrument_header_t * instrument_header[max_instruments];
xm_sample_header_t * sample_header[max_instruments]; // array
int sample_data_offset[max_instruments];
};
xm_state xm = {0};
struct interpreter_state {
int tick_rate;
int ticks_per_line;
int tick;
int pattern_order_table_index;
int pattern_break;
int pattern_index;
int line_index; // within the current pattern (for debugging)
int note_offset; // within the current pattern
int next_note_offset;
int number_of_channels;
int song_length;
};
struct interpreter_state state;
void print_u8(int8_t * chars, int length, const char * end)
{
for (int i = 0; i < length; i++) {
int8_t c = chars[i];
if (c >= 0x20 && c <= 0x7e) {
sh7091_character(c);
} else {
printf("\\x%02x", c);
}
}
if (end != NULL) {
while (*end != 0)
sh7091_character(*end++);
}
}
int s16(void * buf)
{
uint8_t * b = (uint8_t *)buf;
int16_t v = (b[0] << 0) | (b[1] << 8);
return v;
}
int s32(void * buf)
{
uint8_t * b = (uint8_t *)buf;
int32_t v = (b[0] << 0) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24);
return v;
}
uint8_t __attribute__((aligned(32))) sample_data[1024 * 1024];
int sample_data_ix;
int unpack_sample(int buf, int offset, xm_sample_header_t * sample_header)
{
int size = s32(&sample_header->sample_length);
int loop_start = s32(&sample_header->sample_loop_start);
int loop_length = s32(&sample_header->sample_loop_length);
printf("unpack %d %d\n", offset, size);
int loop_type = sample_header->type & 0b11;
if (sample_header->type & (1 << 4)) { // 16-bit samples
int num_samples = size / 2;
int lsa = loop_start / 2;
int len = loop_length / 2;
int old = 0;
volatile int16_t * out = (volatile int16_t *)(&sample_data[sample_data_ix]);
int16_t * in = (int16_t *)(buf + offset);
for (int i = 0; i < num_samples; i++) {
old += s16(&in[i]);
out[i] = old;
}
if (loop_type == 2) { // bidirectional
for (int i = 0; i < len - 2; i++) {
out[num_samples + i] = out[lsa + (len - i - 2)];
}
size += (len - 2) * 2;
}
} else { // 8-bit
int num_samples = size;
int lsa = loop_start;
int len = loop_length;
int old = 0;
volatile int8_t * out = (volatile int8_t *)(&sample_data[sample_data_ix]);
int8_t * in = (int8_t *)(buf + offset);
for (int i = 0; i < num_samples; i++) {
old += in[i];
out[i] = old;
}
if (loop_type == 2) { // bidirectional
for (int i = 0; i < len - 2; i++) {
out[num_samples + i] = out[lsa + (len - i - 2)];
}
size += (len - 2);
}
}
if (size & 1) {
size += 1;
}
return size;
}
void debug_xm_sample_header(int instrument_ix, xm_sample_header_t * sample_header)
{
printf("sample header: instrument_ix: %d:\n", instrument_ix);
printf(" volume %d\n", sample_header->volume);
printf(" finetune %d\n", sample_header->finetune);
printf(" type %x\n", sample_header->type);
printf(" panning %d\n", sample_header->panning);
printf(" relative_note_number %d\n", sample_header->relative_note_number);
printf(" sample_length % 6d\n", s32(&sample_header->sample_length));
printf(" sample_loop_start % 6d\n", s32(&sample_header->sample_loop_start));
printf(" sample_loop_length % 6d\n", s32(&sample_header->sample_loop_length));
}
int xm_samples_init(int buf, int offset, int instrument_ix, int number_of_samples)
{
xm_sample_header_t * sample_header[number_of_samples];
xm.sample_header[instrument_ix] = (xm_sample_header_t *)(buf + offset);
if (instrument_ix <= 12)
debug_xm_sample_header(instrument_ix, xm.sample_header[instrument_ix]);
for (int i = 0; i < number_of_samples; i++) {
sample_header[i] = (xm_sample_header_t *)(buf + offset);
offset += (sizeof (xm_sample_header_t));
}
for (int i = 0; i < number_of_samples; i++) {
int sample_length = s32(&sample_header[i]->sample_length);
if (sample_length > 0) {
//printf(" sample_length % 6d\n", sample_length);
xm.sample_data_offset[instrument_ix] = sample_data_ix;
sample_data_ix += unpack_sample(buf, offset, sample_header[i]);
assert(sample_data_ix <= (int)(sizeof (sample_data)));
}
offset += sample_length;
}
return offset;
}
void xm_init(int buf)
{
sample_data_ix = 0;
xm.header = (xm_header_t *)(buf);
int offset = s32(&xm.header->header_size) + (offsetof (struct xm_header, header_size));
int number_of_patterns = s16(&xm.header->number_of_patterns);
printf("number_of_patterns: %d\n", number_of_patterns);
for (int i = 0; i < number_of_patterns; i++) {
xm_pattern_header_t * pattern_header = (xm_pattern_header_t *)(buf + offset);
xm.pattern_header[i] = pattern_header;
offset += s32(&pattern_header->pattern_header_length) + s16(&pattern_header->packed_pattern_data_size);
}
printf("end_of_patterns: %d\n", offset);
int number_of_instruments = s16(&xm.header->number_of_instruments);
for (int i = 0; i < number_of_instruments; i++) {
xm_instrument_header_t * instrument_header = (xm_instrument_header_t *)(buf + offset);
xm.instrument_header[i] = instrument_header;
offset += s32(&instrument_header->instrument_size);
int number_of_samples = s16(&instrument_header->number_of_samples);
offset = xm_samples_init(buf, offset, i, number_of_samples);
}
printf("end_of_instruments: %d\n", offset);
int number_of_channels = s16(&xm.header->number_of_channels);
state.number_of_channels = number_of_channels;
printf("number_of_channels: %d\n", number_of_channels);
int song_length = s16(&xm.header->song_length);
state.song_length = song_length;
printf("song_length: %d\n", song_length);
//for (int i = 0; i < song_length; i++) {
//printf(" %x\n", xm.header->pattern_order_table[i]);
//}
}
void wait()
{
uint32_t ffst = system.FFST;
while ( ffst::holly_cpu_if_block_internal_write_buffer(ffst)
| ffst::holly_g2_if_block_internal_write_buffer(ffst)
| ffst::aica_internal_write_buffer(ffst)) {
ffst = system.FFST;
};
}
constexpr uint32_t dma_address_mask = 0x1fffffe0;
void g2_aica_dma(uint32_t g2_address, uint32_t system_address, int length)
{
using namespace dmac;
length = (length + 31) & (~31);
// is DMAOR needed?
sh7091.DMAC.DMAOR = dmaor::ddt::on_demand_data_transfer_mode /* on-demand data transfer mode */
| dmaor::pr::ch2_ch0_ch1_ch3 /* priority mode; CH2 > CH0 > CH1 > CH3 */
| dmaor::dme::operation_enabled_on_all_channels; /* DMAC master enable */
g2_if.ADEN = 0; // disable G2-AICA-DMA
g2_if.G2APRO = 0x4659007f; // disable protection
g2_if.ADSTAG = dma_address_mask & g2_address; // G2 address
g2_if.ADSTAR = dma_address_mask & system_address; // system memory address
g2_if.ADLEN = length;
g2_if.ADDIR = 0; // from root bus to G2 device
g2_if.ADTSEL = 0; // CPU controlled trigger
g2_if.ADEN = 1; // enable G2-AICA-DMA
g2_if.ADST = 1; // start G2-AICA-DMA
}
void g2_aica_dma_wait_complete()
{
// wait for maple DMA completion
while ((system.ISTNRM & istnrm::end_of_dma_aica_dma) == 0);
system.ISTNRM = istnrm::end_of_dma_aica_dma;
assert(g2_if.ADST == 0);
}
void writeback(void const * const buf, uint32_t size)
{
uint8_t const * const buf8 = reinterpret_cast<uint8_t const * const>(buf);
for (uint32_t i = 0; i < size / (32); i++) {
asm volatile ("ocbwb @%0"
: // output
: "r" (&buf8[i * 32]) // input
: "memory"
);
}
}
// quater-semitones
const static int cent_to_fns[] = {
0, 15, 30, 45, 61, 77, 93, 109, 125, 142, 159, 176,
194, 211, 229, 248, 266, 285, 304, 323, 343, 363, 383, 403,
424, 445, 467, 488, 510, 533, 555, 578, 601, 625, 649, 673,
698, 723, 749, 774, 801, 827, 854, 881, 909, 937, 966, 995
};
const int cent_to_fns_length = (sizeof (cent_to_fns)) / (sizeof (cent_to_fns[0]));
uint16_t
note_to_oct_fns(const int8_t note)
{
const float base_ratio = -2.3986861877015477;
float c4_note = (float)note - 49.0;
float ratio = base_ratio + (c4_note / 12.0);
float whole = (int)ratio;
float fraction;
if (ratio < 0) {
if (whole > ratio)
whole -= 1;
fraction = -(whole - ratio);
} else {
fraction = ratio - whole;
}
assert(fraction >= 0.0);
assert(fraction <= 1.0);
int fns = cent_to_fns[(int)(fraction * cent_to_fns_length)];
return aica::oct_fns::OCT((int)whole) | aica::oct_fns::FNS((int)fns);
}
int8_t volume_table[] = {
0, 3, 5, 6, 7, 8, 8, 9, 9, 9, 10, 10, 10, 10, 11, 11,
11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15
};
void debug_note(interpreter_state& state, int ch, xm_pattern_format_t * pf)
{
static xm_pattern_format_t column[8];
/*
printf("note[%d]\n", note_ix);
printf(" note: %d\n", pf->note);
printf(" instrument: %d\n", pf->instrument);
printf(" volume_column_byte: %d\n", pf->volume_column_byte);
printf(" effect_type: %d\n", pf->effect_type);
printf(" effect_parameter: %d\n", pf->effect_parameter);
*/
column[ch].note = pf->note;
column[ch].instrument = pf->instrument;
column[ch].volume_column_byte = pf->volume_column_byte;
column[ch].effect_type = pf->effect_type;
column[ch].effect_parameter = pf->effect_parameter;
if (ch == 7) {
printf("%3d %3d |", state.pattern_index, state.line_index);
for (int i = 0; i < state.number_of_channels; i++)
printf(" %2d %2d %2x%02x |",
column[i].note,
column[i].instrument,
column[i].effect_type,
column[i].effect_parameter);
printf("\n");
}
}
void _play_note(int ch, xm_pattern_format_t * pf)
{
xm_sample_header_t * sample_header = xm.sample_header[pf->instrument - 1];
int sample_type = ((sample_header->type & (1 << 4)) != 0);
int bytes_per_sample = 1 + sample_type;
int start_offset = 0;
/*
if (pf->effect_type == 0x9) { // 9 sample offset
start_offset += (256 * pf->effect_parameter);
}
*/
int start = xm.sample_data_offset[pf->instrument - 1] + start_offset;
int loop_type = sample_header->type & 0b11;
int lpctl = (loop_type == 0) ? 0 : 1;
int lsa = s32(&sample_header->sample_loop_start) / bytes_per_sample;
int len = s32(&sample_header->sample_loop_length) / bytes_per_sample;
if (len == 0) {
len = s32(&sample_header->sample_length) / bytes_per_sample;
}
if (len >= 65535) {
len = 65532;
}
assert(start >= 0);
assert(lsa >= 0);
assert(len >= 0);
if (loop_type == 2) // bidirectional
len += len - 2;
assert(sample_header->volume >= 0 && sample_header->volume <= 64);
int disdl = volume_table[sample_header->volume];
bool pcms = !sample_type;
if (pf->effect_type == 0x04) { // vibrato
wait(); aica_sound.channel[ch].LFOF(0x12);
wait(); aica_sound.channel[ch].ALFOWS(2);
wait(); aica_sound.channel[ch].PLFOWS(2);
wait(); aica_sound.channel[ch].ALFOS(0);
wait(); aica_sound.channel[ch].PLFOS(4);
} else {
//wait(); aica_sound.channel[ch].LFOF(0x11);
//wait(); aica_sound.channel[ch].ALFOWS(2);
//wait(); aica_sound.channel[ch].PLFOWS(2);
wait(); aica_sound.channel[ch].ALFOS(0);
wait(); aica_sound.channel[ch].PLFOS(0);
}
wait(); aica_sound.channel[ch].PCMS(pcms);
wait(); aica_sound.channel[ch].SA(start);
wait(); aica_sound.channel[ch].LPCTL(lpctl);
wait(); aica_sound.channel[ch].LSA((lsa) & ~(0b11));
wait(); aica_sound.channel[ch].LEA((lsa + len) & ~(0b11));
wait(); aica_sound.channel[ch].oct_fns = note_to_oct_fns(pf->note + sample_header->relative_note_number);
wait(); aica_sound.channel[ch].DISDL(disdl);
wait(); aica_sound.channel[ch].KYONB(1);
}
void play_note_effect(interpreter_state& state, int ch, xm_pattern_format_t * pf)
{
int effect_tick = (state.tick / 2) % state.ticks_per_line;
switch (pf->effect_type) {
case 0x04: // 4 vibrato
wait(); aica_sound.channel[ch].LFOF(0x12);
wait(); aica_sound.channel[ch].ALFOWS(2);
wait(); aica_sound.channel[ch].PLFOWS(2);
wait(); aica_sound.channel[ch].ALFOS(0);
wait(); aica_sound.channel[ch].PLFOS(4);
break;
case 0x0d: // D pattern break
state.pattern_break = pf->effect_parameter;
break;
case 0x0e: // E
switch (pf->effect_parameter & 0xf0) {
case 0xd0: // ED note delay
if (effect_tick == (pf->effect_parameter & 0x0f)) {
_play_note(ch, pf);
}
break;
}
break;
case 0x14: // K delayed tick
if (effect_tick == pf->effect_parameter) {
wait(); aica_sound.channel[ch].KYONB(0);
}
break;
}
}
void play_note(interpreter_state& state, int ch, xm_pattern_format_t * pf)
{
if (pf->note == 97) {
wait(); aica_sound.channel[ch].KYONB(0);
} else if (pf->note != 0 && pf->instrument != 0) {
bool note_delay = (pf->effect_type == 0xe) && ((pf->effect_parameter & 0xf0) == 0xd0); // ED note delay
if (!note_delay)
_play_note(ch, pf);
}
play_note_effect(state, ch, pf);
}
void play_debug_note(interpreter_state& state, int ch, xm_pattern_format_t * pf)
{
debug_note(state, ch, pf);
play_note(state, ch, pf);
}
void rekey_note(interpreter_state& state, int ch, xm_pattern_format_t * pf)
{
if (pf->note == 97) {
} else if (pf->note != 0 && pf->instrument != 0) {
wait(); aica_sound.channel[ch].KYONB(0);
}
}
int parse_pattern_line(interpreter_state& state, xm_pattern_header_t * pattern_header, int note_offset, void (*func)(interpreter_state&, int, xm_pattern_format_t*))
{
uint8_t * pattern = (uint8_t *)(((int)pattern_header) + s32(&pattern_header->pattern_header_length));
for (int i = 0; i < state.number_of_channels; i++) {
int p = pattern[note_offset];
if (p & 0x80) {
note_offset += 1;
xm_pattern_format_t pf = {};
if (p & (1 << 0))
pf.note = pattern[note_offset++];
if (p & (1 << 1))
pf.instrument = pattern[note_offset++];
if (p & (1 << 2))
pf.volume_column_byte = pattern[note_offset++];
if (p & (1 << 3))
pf.effect_type = pattern[note_offset++];
if (p & (1 << 4))
pf.effect_parameter = pattern[note_offset++];
func(state, i, &pf);
} else {
xm_pattern_format_t * pf = (xm_pattern_format_t *)&pattern[note_offset];
func(state, i, pf);
note_offset += 5;
}
}
return note_offset;
}
void next_pattern(interpreter_state& state, int pattern_break)
{
state.line_index = 0;
state.next_note_offset = 0;
state.pattern_break = -1;
state.pattern_order_table_index += 1;
printf("pattern_order_table_index: %d\n", state.pattern_order_table_index);
if (state.pattern_order_table_index >= state.song_length)
state.pattern_order_table_index = 0;
state.pattern_index = xm.header->pattern_order_table[state.pattern_order_table_index];
}
void vbr100()
{
serial::string("vbr100\n");
interrupt_exception();
}
void vbr400()
{
serial::string("vbr400\n");
interrupt_exception();
}
constexpr int div(int n, int d)
{
return (n + 32 - 1) / 32;
}
struct framebuffer {
int px_width;
int px_height;
framebuffer(int width, int height)
: px_width(width), px_height(height)
{}
int tile_width() {
return div(px_width, 32);
}
int tile_height() {
return div(px_height, 32);
}
};
struct framebuffer framebuffer(640, 480);
const int bytes_per_pixel = 2;
constexpr uint32_t ta_alloc = 0
| ta_alloc_ctrl::pt_opb::no_list
| ta_alloc_ctrl::tm_opb::no_list
| ta_alloc_ctrl::t_opb::no_list
| ta_alloc_ctrl::om_opb::no_list
| ta_alloc_ctrl::o_opb::_32x4byte;
constexpr int ta_cont_count = 1;
constexpr struct opb_size opb_size[ta_cont_count] = {
{
.opaque = 32 * 4,
.opaque_modifier = 0,
.translucent = 0,
.translucent_modifier = 0,
.punch_through = 0
}
};
static volatile int ta_in_use = 0;
static volatile int core_in_use = 0;
static volatile int next_frame = 0;
static volatile int framebuffer_ix = 0;
static volatile int next_frame_ix = 0;
static inline void pump_events(uint32_t istnrm)
{
if (istnrm & istnrm::v_blank_in) {
system.ISTNRM = istnrm::v_blank_in;
next_frame = 1;
holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[next_frame_ix].start;
}
if (istnrm & istnrm::end_of_render_tsp) {
system.ISTNRM = istnrm::end_of_render_tsp
| istnrm::end_of_render_isp
| istnrm::end_of_render_video;
next_frame_ix = framebuffer_ix;
framebuffer_ix += 1;
if (framebuffer_ix >= 3) framebuffer_ix = 0;
core_in_use = 0;
}
if (istnrm & istnrm::end_of_transferring_opaque_list) {
system.ISTNRM = istnrm::end_of_transferring_opaque_list;
core_in_use = 1;
core_start_render2(texture_memory_alloc.region_array.start,
texture_memory_alloc.isp_tsp_parameters.start,
texture_memory_alloc.background[0].start,
texture_memory_alloc.framebuffer[framebuffer_ix].start,
framebuffer.px_width);
ta_in_use = 0;
}
}
static inline void tmu0_events()
{
xm_pattern_header_t * pattern_header = xm.pattern_header[state.pattern_index];
int pattern_data_size = s16(&pattern_header->packed_pattern_data_size);
bool keyoff_tick = (state.tick + 1) % (state.ticks_per_line * 2) == 0;
bool note_tick = state.tick % (state.ticks_per_line * 2) == 0;
bool effect_tick = (state.tick & 1) == 0;
bool pattern_break_tick = (state.tick % (state.ticks_per_line * 2)) == (state.ticks_per_line * 2 - 1);
if (keyoff_tick) {
// execute keyoffs
parse_pattern_line(state, pattern_header, state.next_note_offset, rekey_note);
wait(); aica_sound.channel[0].KYONEX(1);
}
if (state.pattern_break >= 0 && pattern_break_tick) {
printf("pattern_break\n");
next_pattern(state, -1);
}
if (note_tick) {
state.note_offset = state.next_note_offset;
state.next_note_offset = parse_pattern_line(state, pattern_header, state.note_offset, play_debug_note);
//state.next_note_offset = parse_pattern_line(state, pattern_header, state.note_offset, play_note);
state.line_index += 1;
wait(); aica_sound.channel[0].KYONEX(1);
}
if (effect_tick && !note_tick) {
// execute effects
parse_pattern_line(state, pattern_header, state.note_offset, play_note_effect);
wait(); aica_sound.channel[0].KYONEX(1);
}
if (state.next_note_offset >= pattern_data_size && pattern_break_tick) {
printf("pattern_data_size\n");
next_pattern(state, -1);
}
state.tick += 1;
}
void vbr600()
{
uint32_t sr;
asm volatile ("stc sr,%0" : "=r" (sr));
sr |= sh::sr::imask(15);
asm volatile ("ldc %0,sr" : : "r" (sr));
if (sh7091.CCN.EXPEVT == 0 && sh7091.CCN.INTEVT == 0x320) { // Holly
uint32_t istnrm = system.ISTNRM;
uint32_t isterr = system.ISTERR;
if (isterr) {
serial::string("isterr: ");
serial::integer<uint32_t>(system.ISTERR);
}
pump_events(istnrm);
} else if (sh7091.CCN.EXPEVT == 0 && sh7091.CCN.INTEVT == 0x400) { // TMU0
sh7091.TMU.TCR0
= tmu::tcr0::UNIE
| tmu::tcr0::tpsc::p_phi_256; // clear underflow
tmu0_events();
} else {
serial::string("vbr600\n");
interrupt_exception();
}
sr &= ~sh::sr::imask(15);
asm volatile ("ldc %0,sr" : : "r" (sr));
}
void framebuffer_init()
{
int x_size = framebuffer.px_width;
int y_size = framebuffer.px_height;
// write
holly.FB_X_CLIP = fb_x_clip::fb_x_clip_max(x_size - 1)
| fb_x_clip::fb_x_clip_min(0);
holly.FB_Y_CLIP = fb_y_clip::fb_y_clip_max(y_size - 1)
| fb_y_clip::fb_y_clip_min(0);
// read
holly.FB_R_SIZE = fb_r_size::fb_modulus(1)
| fb_r_size::fb_y_size(y_size - 1)
| fb_r_size::fb_x_size((x_size * bytes_per_pixel) / 4 - 1);
holly.FB_R_CTRL = fb_r_ctrl::vclk_div::pclk_vclk_1
| fb_r_ctrl::fb_depth::_565_rgb_16bit
| fb_r_ctrl::fb_enable;
}
void scaler_init()
{
holly.Y_COEFF = y_coeff::coefficient_1(0x80)
| y_coeff::coefficient_0_2(0x40);
// in 6.10 fixed point; 0x0400 is 1x vertical scale
holly.SCALER_CTL = scaler_ctl::vertical_scale_factor(0x0400);
holly.FB_BURSTCTRL = fb_burstctrl::wr_burst(0x09)
| fb_burstctrl::vid_lat(0x3f)
| fb_burstctrl::vid_burst(0x39);
}
void spg_set_mode_720x480()
{
holly.SPG_CONTROL
= spg_control::sync_direction::output;
holly.SPG_LOAD
= spg_load::vcount(525 - 1) // number of lines per field
| spg_load::hcount(858 - 1); // number of video clock cycles per line
holly.SPG_HBLANK
= spg_hblank::hbend(117) // H Blank ending position
| spg_hblank::hbstart(837); // H Blank starting position
holly.SPG_VBLANK
= spg_vblank::vbend(40) // V Blank ending position
| spg_vblank::vbstart(520); // V Blank starting position
holly.SPG_WIDTH
= spg_width::eqwidth(16 - 1) // Specify the equivalent pulse width (number of video clock cycles - 1)
| spg_width::bpwidth(794 - 1) // Specify the broad pulse width (number of video clock cycles - 1)
| spg_width::vswidth(3) // V Sync width (number of lines)
| spg_width::hswidth(64 - 1); // H Sync width (number of video clock cycles - 1)
holly.VO_STARTX
= vo_startx::horizontal_start_position(117);
holly.VO_STARTY
= vo_starty::vertical_start_position_on_field_2(40)
| vo_starty::vertical_start_position_on_field_1(40);
holly.VO_CONTROL
= vo_control::pclk_delay(22);
holly.SPG_HBLANK_INT
= spg_hblank_int::line_comp_val(837);
holly.SPG_VBLANK_INT
= spg_vblank_int::vblank_out_interrupt_line_number(21)
| spg_vblank_int::vblank_in_interrupt_line_number(520);
}
void spg_set_mode_640x480()
{
holly.SPG_CONTROL
= spg_control::sync_direction::output;
holly.SPG_LOAD
= spg_load::vcount(525 - 1) // number of lines per field
| spg_load::hcount(858 - 1); // number of video clock cycles per line
holly.SPG_HBLANK
= spg_hblank::hbend(126) // H Blank ending position
| spg_hblank::hbstart(837); // H Blank starting position
holly.SPG_VBLANK
= spg_vblank::vbend(40) // V Blank ending position
| spg_vblank::vbstart(520); // V Blank starting position
holly.SPG_WIDTH
= spg_width::eqwidth(16 - 1) // Specify the equivalent pulse width (number of video clock cycles - 1)
| spg_width::bpwidth(794 - 1) // Specify the broad pulse width (number of video clock cycles - 1)
| spg_width::vswidth(3) // V Sync width (number of lines)
| spg_width::hswidth(64 - 1); // H Sync width (number of video clock cycles - 1)
holly.VO_STARTX
= vo_startx::horizontal_start_position(168);
holly.VO_STARTY
= vo_starty::vertical_start_position_on_field_2(40)
| vo_starty::vertical_start_position_on_field_1(40);
holly.VO_CONTROL
= vo_control::pclk_delay(22);
holly.SPG_HBLANK_INT
= spg_hblank_int::line_comp_val(837);
holly.SPG_VBLANK_INT
= spg_vblank_int::vblank_out_interrupt_line_number(21)
| spg_vblank_int::vblank_in_interrupt_line_number(520);
}
void core_param_init()
{
uint32_t region_array_start = texture_memory_alloc.region_array.start;
uint32_t isp_tsp_parameters_start = texture_memory_alloc.isp_tsp_parameters.start;
uint32_t background_start = texture_memory_alloc.framebuffer[0].start;
holly.REGION_BASE = region_array_start;
holly.PARAM_BASE = isp_tsp_parameters_start;
uint32_t background_offset = background_start - isp_tsp_parameters_start;
holly.ISP_BACKGND_T
= isp_backgnd_t::tag_address(background_offset / 4)
| isp_backgnd_t::tag_offset(0)
| isp_backgnd_t::skip(1);
holly.ISP_BACKGND_D = _i(1.f/100000.f);
holly.FB_W_CTRL
= fb_w_ctrl::fb_dither
| fb_w_ctrl::fb_packmode::_565_rgb_16bit;
holly.FB_W_LINESTRIDE = (framebuffer.px_width * bytes_per_pixel) / 8;
}
void graphics_init()
{
holly.SOFTRESET = softreset::pipeline_soft_reset
| softreset::ta_soft_reset;
holly.SOFTRESET = 0;
scaler_init();
core_init();
core_param_init();
spg_set_mode_640x480();
framebuffer_init();
background_parameter2(texture_memory_alloc.framebuffer[0].start,
0xff800080);
region_array_multipass(framebuffer.tile_width(),
framebuffer.tile_height(),
opb_size,
ta_cont_count,
texture_memory_alloc.region_array.start,
texture_memory_alloc.object_list.start);
}
void global_polygon_type_0(ta_parameter_writer& writer)
{
const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
| para_control::list_type::opaque
| obj_control::col_type::packed_color
| obj_control::gouraud;
const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
| isp_tsp_instruction_word::culling_mode::no_culling;
const uint32_t tsp_instruction_word = tsp_instruction_word::src_alpha_instr::one
| tsp_instruction_word::dst_alpha_instr::zero
| tsp_instruction_word::fog_control::no_fog;
writer.append<ta_global_parameter::polygon_type_0>() =
ta_global_parameter::polygon_type_0(parameter_control_word,
isp_tsp_instruction_word,
tsp_instruction_word,
0,
0, // data_size_for_sort_dma
0 // next_address_for_sort_dma
);
}
struct vertex {
vec3 p;
uint32_t c;
};
static inline void triangle(ta_parameter_writer& writer,
const vertex& a, const vertex& b, const vertex& c)
{
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
a.p.x, a.p.y, a.p.z,
a.c);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
b.p.x, b.p.y, b.p.z,
b.c);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(true),
c.p.x, c.p.y, c.p.z,
c.c);
}
const vertex triangle_vertices[] = {
{ { 320.000f, 50.f, 0.1f }, 0xffff0000 },
{ { 539.393f, 430.f, 0.1f }, 0xff00ff00 },
{ { 100.607f, 430.f, 0.1f }, 0xff0000ff },
};
void transfer_scene(ta_parameter_writer& writer)
{
global_polygon_type_0(writer);
triangle(writer, triangle_vertices[0], triangle_vertices[1], triangle_vertices[2]);
writer.append<ta_global_parameter::end_of_list>() =
ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
}
void graphics_event(ta_parameter_writer& writer)
{
writer.offset = 0;
transfer_scene(writer);
while (ta_in_use);
while (core_in_use);
ta_in_use = 1;
ta_polygon_converter_init2(texture_memory_alloc.isp_tsp_parameters.start,
texture_memory_alloc.isp_tsp_parameters.end,
texture_memory_alloc.object_list.start,
texture_memory_alloc.object_list.end,
opb_size[0].total(),
ta_alloc,
framebuffer.tile_width(),
framebuffer.tile_height());
ta_polygon_converter_writeback(writer.buf, writer.offset);
ta_polygon_converter_transfer(writer.buf, writer.offset);
while (next_frame == 0);
next_frame = 0;
}
uint8_t __attribute__((aligned(32))) zero[0x28c0] = {};
void sound_init()
{
//int buf = (int)&_binary_xm_milkypack01_xm_start;
//int buf = (int)&_binary_xm_middle_c_xm_start;
//int buf = (int)&_binary_xm_test_xm_start;
//int buf = (int)&_binary_xm_xmtest_xm_start;
int buf = (int)&_binary_xm_catch_this_rebel_xm_start;
xm_init(buf);
wait(); aica_sound.common.vreg_armrst = aica::vreg_armrst::ARMRST(1);
wait(); aica_sound.common.dmea0_mrwinh = aica::dmea0_mrwinh::MRWINH(0b0111);
system.ISTNRM = istnrm::end_of_dma_aica_dma;
// slot/common: 00700000 - 007028c0 (excludes vreg_armrst)
g2_aica_dma((uint32_t)0x00700000, (int)zero, 0x28c0);
g2_aica_dma_wait_complete();
// dsp : 00703000 - 007045c8
g2_aica_dma((uint32_t)0x00703000, (int)zero, 0x15e0);
g2_aica_dma_wait_complete();
printf("i[0] start %d size %d\n",
xm.sample_data_offset[0],
s32(&xm.sample_header[0]->sample_length));
printf("i[1] start %d size %d\n",
xm.sample_data_offset[1],
s32(&xm.sample_header[1]->sample_length));
for (int i = 0; i < 16; i++) {
serial::hexlify(&sample_data[i * 16], 16);
}
printf("transfer %08x %08x %d\n", (int)aica_wave_memory, (int)sample_data, sample_data_ix);
// wave memory
int size = (sample_data_ix + 31) & (~31);
writeback(sample_data, size);
system.ISTERR = 0xffffffff;
g2_aica_dma((int)aica_wave_memory, (int)sample_data, size);
g2_aica_dma_wait_complete();
printf("sar0 %08x\n", sh7091.DMAC.SAR0);
printf("dar0 %08x\n", sh7091.DMAC.DAR0);
printf("dmatcr0 %08x\n", sh7091.DMAC.DMATCR0);
printf("chcr0 %08x\n", sh7091.DMAC.CHCR0);
printf("isterr %08x\n", system.ISTERR);
//g2_aica_dma((int)aica_wave_memory, (int)sample_data, size);
//g2_aica_dma_wait_complete();
for (int i = 0; i < 16; i++) {
volatile uint8_t * s = &((volatile uint8_t*)aica_wave_memory)[i * 16];
for (int j = 0; j < 16; j++) {
wait();
serial::hexlify(s[j]);
serial::character(' ');
}
serial::character('\n');
}
wait(); aica_sound.common.dmea0_mrwinh = aica::dmea0_mrwinh::MRWINH(0b0001);
for (int i = 0; i < 64; i++) {
wait(); aica_sound.channel[i].KYONB(0);
wait(); aica_sound.channel[i].LPCTL(0);
wait(); aica_sound.channel[i].PCMS(0);
wait(); aica_sound.channel[i].LSA(0);
wait(); aica_sound.channel[i].LEA(0);
wait(); aica_sound.channel[i].D2R(0);
wait(); aica_sound.channel[i].D1R(0);
wait(); aica_sound.channel[i].RR(0x1f);
wait(); aica_sound.channel[i].AR(0x1f);
wait(); aica_sound.channel[i].ALFOS(0);
wait(); aica_sound.channel[i].PLFOS(0);
wait(); aica_sound.channel[i].OCT(0);
wait(); aica_sound.channel[i].FNS(0);
wait(); aica_sound.channel[i].DISDL(0);
wait(); aica_sound.channel[i].DIPAN(0);
wait(); aica_sound.channel[i].Q(0b00100);
wait(); aica_sound.channel[i].TL(0);
wait(); aica_sound.channel[i].LPOFF(1);
}
wait(); aica_sound.common.mono_mem8mb_dac18b_ver_mvol =
aica::mono_mem8mb_dac18b_ver_mvol::MONO(0) // enable panpots
| aica::mono_mem8mb_dac18b_ver_mvol::MEM8MB(0) // 16Mbit SDRAM
| aica::mono_mem8mb_dac18b_ver_mvol::DAC18B(0) // 16-bit DAC
| aica::mono_mem8mb_dac18b_ver_mvol::MVOL(0xc) // volume
;
// 195 = 1ms
// 2500 / bpm milliseconds
printf("default_bpm %d\n", xm.header->default_bpm);
printf("default_tempo %d\n", xm.header->default_tempo);
state.tick_rate = 195.32 * 2500 / xm.header->default_bpm;
state.ticks_per_line = xm.header->default_tempo;
state.tick = 0;
state.pattern_break = -1;
state.pattern_order_table_index = 0;
state.pattern_index = xm.header->pattern_order_table[state.pattern_order_table_index];
state.line_index = 0;
state.note_offset = 0;
state.next_note_offset = 0;
printf("tick_rate %d\n", state.tick_rate);
printf("pattern %d\n", state.pattern_index);
sh7091.TMU.TSTR = 0; // stop all timers
sh7091.TMU.TCOR0 = state.tick_rate / 2;
sh7091.TMU.TOCR = tmu::tocr::tcoe::tclk_is_external_clock_or_input_capture;
sh7091.TMU.TCR0
= tmu::tcr0::UNIE
| tmu::tcr0::tpsc::p_phi_256; // 256 / 50MHz = 5.12 μs ; underflows in ~1 hour
sh7091.TMU.TCNT0 = 0;
sh7091.TMU.TSTR = tmu::tstr::str0::counter_start;
sh7091.INTC.IPRA = intc::ipra::TMU0(1);
}
void main()
{
serial::init(0);
sound_init();
graphics_init();
interrupt_init();
system.IML6NRM = istnrm::end_of_render_tsp
| istnrm::v_blank_in
| istnrm::end_of_transferring_opaque_list;
static uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024 * 1];
ta_parameter_writer writer = ta_parameter_writer(ta_parameter_buf, (sizeof (ta_parameter_buf)));
while (1) {
graphics_event(writer);
}
}
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