example/aica_gdrom: poll system.ISTEXT

base.mk

@@ -2,7 +2,7 @@ DEBUG = -g -gdwarf-4
 
 AFLAGS += --fatal-warnings
 
-CFLAGS += -falign-functions=4 -ffunction-sections -fdata-sections -fshort-enums -ffreestanding -nostdlib -fno-builtin -finline-stringops
+CFLAGS += -falign-functions=4 -ffunction-sections -fdata-sections -fshort-enums -ffreestanding -nostdlib -fno-builtin
 CFLAGS += -Wall -Werror -Wfatal-errors
 CFLAGS += -Wno-array-bounds
 #CFLAGS += -Wno-error=narrowing -Wno-error=unused-variable -Wno-error=array-bounds=

example/aica_gdrom.cpp

@@ -19,6 +19,7 @@ extern void * _binary_start __asm("_binary_example_arm_sh4_interrupt_bin_start")
 extern void * _binary_size __asm("_binary_example_arm_sh4_interrupt_bin_size");
 
 constexpr uint32_t mcipd__sh4_interrupt = (1 << 5);
+constexpr uint32_t miceb__sh4_interrupt = (1 << 5);
 constexpr uint32_t scipd__arm_interrupt = (1 << 5);
 
 constexpr uint32_t sectors_per_chunk = 16;
@@ -64,7 +65,7 @@ void aica_init(uint32_t& chunk_index, const uint32_t * src_chunk)
     }
   }
 
-  chunk = reinterpret_cast<decltype (chunk)>(&aica_wave_memory[0x001f0000 / 4]);
+  chunk = reinterpret_cast<decltype (chunk)>(&aica_wave_memory[0x00100000 / 4]);
 
   serial::integer<uint32_t>(reinterpret_cast<uint32_t>(&(*chunk)[0][0]));
   serial::integer<uint32_t>(reinterpret_cast<uint32_t>(&(*chunk)[1][0]));
@@ -83,9 +84,8 @@ void aica_init(uint32_t& chunk_index, const uint32_t * src_chunk)
 
 void aica_step(uint32_t& chunk_index, const uint32_t * src_chunk)
 {
-  aica_wait_read();
   { // wait for interrupt from arm
-    while ((aica_sound.common.MCIPD() & mcipd__sh4_interrupt) == 0) { aica_wait_read(); };
+    while ((system.ISTEXT & (1 << 1)) == 0);
     aica_wait_write(); aica_sound.common.mcire = mcipd__sh4_interrupt;
   }
 
@@ -372,6 +372,8 @@ void main()
 
   aica_init(chunk_index, &gdrom_buf[0]);
 
+  aica_sound.common.MCIEB(miceb__sh4_interrupt);
+
   //serial::string("aica wave memory:\n");
   //while (aica_wave_memory[0] == 0xeaffffff) { aica_wait_read(); };
   //aica_wait_read(); serial::integer<uint32_t>(aica_wave_memory[0]);

example/arm/main.lds

@@ -1,8 +1,8 @@
 OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
 MEMORY
 {
-  ram     : ORIGIN = 0x00000000, LENGTH = 0x1f0000
-  buffers : ORIGIN = 0x001f0000, LENGTH = 0x10000
+  ram     : ORIGIN = 0x00000000, LENGTH = 0x100000
+  buffers : ORIGIN = 0x00100000, LENGTH = 0x100000
 }
 SECTIONS
 {

example/arm/sh4_interrupt.cpp

@@ -45,8 +45,8 @@ void main()
   aica_sound.channel[0].RR(0x1f);
   aica_sound.channel[0].AR(0x1f);
 
-  aica_sound.channel[0].OCT(0xf);
-  aica_sound.channel[0].FNS(0x7d);
+  aica_sound.channel[0].OCT(-1);
+  aica_sound.channel[0].FNS(0x0);
   aica_sound.channel[0].DISDL(0xf);
   aica_sound.channel[0].DIPAN(0x0);
 
@@ -72,6 +72,8 @@ void main()
   dram[0] = reinterpret_cast<uint32_t>(&chunk[0][0]);
   dram[1] = reinterpret_cast<uint32_t>(&chunk[1][0]);
 
+  request_chunk();
+
   aica_sound.channel[0].SA(reinterpret_cast<const uint32_t>(&chunk[0][0]));
   aica_sound.channel[0].KYONEX(1);
 
@@ -99,16 +101,18 @@ void main()
     request_chunk();
 
     uint32_t sample = 0;
-    const uint32_t target = 16384 + (16384 * 10 / 12);
-    constexpr uint32_t sample_interval = (1 << 10);
+    constexpr uint32_t samples_per_sample = 2;
+    constexpr uint32_t target = chunk_size / 2 * samples_per_sample;
+    constexpr uint32_t scire__sample_interval = (1 << 10);
+    constexpr uint32_t scipd__sample_interval = (1 << 10);
     while (sample < target) {
       //aica_sound.common.tactl_tima = aica::tactl_tima::TACTL(tactl)
       //                           | aica::tactl_tima::TIMA(tima);
 
       //while (!(aica_sound.common.SCIPD() & timer_a_interrupt));
       //aica_sound.common.scire = timer_a_interrupt;
-      while (!(aica_sound.common.SCIPD() & sample_interval));
-      aica_sound.common.scire = sample_interval;
+      while (!(aica_sound.common.SCIPD() & scipd__sample_interval));
+      aica_sound.common.scire = scire__sample_interval;
 
       sample++;
     }

gen/k_means/python/decode_pvrt.py

@@ -82,11 +82,11 @@ out_filename = sys.argv[2]
 
 with open(in_filename, 'rb') as f:
     buf = f.read()
-#pvrt = parse_pvrt_header(buf)
-#canvas = decode_vq_indices(pvrt.codebook, pvrt.indices, pvrt.width, pvrt.height)
-canvas = decode_vq_indices(buf[:256 * 4 * 2], buf[256*4*2:], 128, 64)
-
-#palimage = Image.new('RGB', (pvrt.width, pvrt.height))
-palimage = Image.new('RGB', (128, 64))
+pvrt = parse_pvrt_header(buf)
+canvas = decode_vq_indices(pvrt.codebook, pvrt.indices, pvrt.width, pvrt.height)
+#canvas = decode_vq_indices(buf[:256 * 4 * 2], buf[256*4*2:], 256, 256)
+print(pvrt.texture_data_size, pvrt.texture_type, pvrt.width, pvrt.height)
+palimage = Image.new('RGB', (pvrt.width, pvrt.height))
+#palimage = Image.new('RGB', (256, 256))
 palimage.putdata(canvas)
 palimage.save(out_filename)