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SIO alias dispatch + instant disc speed + game miss collector

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SIO handler alias (0x0CF0 → func_0000641C):
  Runtime capture showed BIOS installs lui+addiu+jalr to RAM 0x641C at 0x0CF0.
  New [[recompiler.bios_aliases]] TOML mechanism emits a one-liner wrapper and
  registers it in the dispatch table. Eliminates 30K dirty_ram blocks/session.

Instant disc speed (disc_speed = "instant" in game.toml [runtime]):
  cdrom_set_speed(0) collapses all seek/read delays to 1 cycle. Correct INT
  sequence still fires; no artificial wait. "2x" and "4x" divisors available.
  Default remains authentic 1x. Tomba set to instant.

Persistent game miss collector (tools/collect_game_misses.py):
  Appends newly-seen dirty_ram dispatch misses in the game text range to a
  file (TombaRecomp/seeds/dirty_ram_misses.txt) for later seeding.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Matthew Stanley
2026-05-29 23:42:16 -07:00
parent f7258927ae
commit aef852e11b
9 changed files with 168 additions and 16 deletions
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runtime/src/main.cpp
+12
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@@ -1072,6 +1072,7 @@ int main(int argc, char** argv) {
uint16_t debug_port = (uint16_t)DEFAULT_DEBUG_PORT;
std::string game_name;
std::string game_id;
std::string disc_speed; /* "1x" | "2x" | "4x" | "instant" */
if (game_config_path) {
try {
@@ -1082,6 +1083,7 @@ int main(int argc, char** argv) {
if (gc.runtime.has_memcard_dir) memcard_dir = gc.runtime.memcard_dir;
if (gc.runtime.has_window_title) window_title = gc.runtime.window_title;
if (gc.runtime.has_debug_port) debug_port = gc.runtime.debug_port;
if (gc.runtime.has_disc_speed) disc_speed = gc.runtime.disc_speed;
std::fprintf(stdout, "psxrecomp: loaded game config %s (%s, %s)\n",
game_config_path, game_name.c_str(), game_id.c_str());
} catch (const std::exception& ex) {
@@ -1123,6 +1125,16 @@ int main(int argc, char** argv) {
sio_connect_pad(0); /* Controller on port 1 */
spu_init();
cdrom_init(disc_path_str.empty() ? NULL : disc_path_str.c_str());
{
int divisor = 1; /* default: authentic 1x timing */
if (disc_speed == "instant") divisor = 0;
else if (disc_speed == "4x") divisor = 4;
else if (disc_speed == "2x") divisor = 2;
if (divisor != 1)
std::fprintf(stdout, "psxrecomp: disc_speed=%s (divisor=%d)\n",
disc_speed.c_str(), divisor);
cdrom_set_speed(divisor);
}
memcard_init(memcard_dir_str.c_str());
std::atexit(memcard_flush_all);
#ifndef PSX_NO_DEBUG_TOOLS