A PS4 package's sce_sys/playgo-chunk.dat starts with the magic "plgo"
instead of the PS5 "plgx", so scePlayGo threw on every PS4 title that
ships one. Up to the chunk count the two headers have the same layout: a
32-bit magic, then 16-bit version major, version minor, image count and
chunk count, so the count is the little-endian 16-bit word at 0x0A in
both. The table is now read for either magic; a zero count is still
rejected.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A dump with sce_sys/playgo-scenario.json and no chunk table already answers
every chunk id as installed, but scePlayGoGetChunkId listed only chunk 0.
Ghost of Tsushima (PPSA02225) builds its set of installed chunks from that
list and never reads its English audio, two of its music archives or its
opening movie. scePlayGoGetChunkId now lists ids 0 to 999, the room that
title passes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A dump is fully installed, so scePlayGoGetSupportedOptionalChunk and
scePlayGoGetOptionalChunk report every optional chunk (language pack) like
scePlayGoGetLanguageMask reports every language. They returned an empty
bitmask, so PPSA01748 hid every text language its playgo-scenario.json
lists as a chunk language, English included.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A package with no playgo-* file in sce_sys has no PlayGo data, so only chunk 0
is valid and any other id returns SCE_PLAYGO_ERROR_BAD_CHUNK_ID. A package with
playgo-scenario.json but no chunk table (PPSA01748) keeps accepting every id.
A chunk table (playgo-chunk.dat or playgo-chunkdefs.xml) still decides when it
exists. A sce_sys that holds other playgo-* files without a chunk table or a
scenario file, or a playgo-chunk.dat that is not a plgx table with a nonzero
count, throws naming the file, since no such dump is known.
Without this a title that walks the ids until the first error (Sifu PPSA03001)
never gets the error.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
A child process runs from a root whose app0/sce_sys/playgo-chunk.dat
declares 3 chunks: ids 0-2 are local, id 3 is rejected with
SCE_PLAYGO_ERROR_BAD_CHUNK_ID and scePlayGoGetChunkId counts 3.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
PS5 dumps carry no playgo-chunkdefs.xml (only sce_sys/playgo-scenario.json, which
lists no chunks), so the valid set fell back to chunk 0 and every query for another
chunk returned SCE_PLAYGO_ERROR_BAD_CHUNK_ID. A title that asks for all of its chunks
in one scePlayGoGetLocus call then never sees them as installed and waits forever.
Without definitions the chunk table is unknown and a dump is fully installed, so any
chunk id is accepted and reported as local. With playgo-chunkdefs.xml present,
validation is unchanged. scePlayGoGetChunkId still reports the known set.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The title is fully installed, so scePlayGoGetLanguageMask reports every
language. scePlayGoSetToDoList validates the handle, entries, chunk IDs
and loci; nothing is pending, so the list is not kept.
Co-Authored-By: Claude <noreply@anthropic.com>
boykopovar