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Diffstat (limited to 'lib/rbcodec/codecs/cRSID/README.txt')
-rw-r--r-- | lib/rbcodec/codecs/cRSID/README.txt | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/cRSID/README.txt b/lib/rbcodec/codecs/cRSID/README.txt new file mode 100644 index 0000000000..3a806b65ed --- /dev/null +++ b/lib/rbcodec/codecs/cRSID/README.txt @@ -0,0 +1,39 @@ + cRSID by Hermit (Mihaly Horvath) - Year 2022 + -------------------------------------------- + +This is a serious integer-only update (rewrite) to my cSID and cSID-light +commandline SID-players, aiming for an ongoing inclusion into RockBox, +as per a request by Ninja earlier at CSDb. He will do the integration. + +The name now contains the 'R' because now a RealSID-like environment-mode +(CIA, VIC, IRQ, NMI) is supported more-or-less ('RealSIDmode' in source). +There are still many RSID tunes that are not played properly, mainly +the tricky ones which use DC04 or DD0C as jump-addresses or RTI placeholders, +like for example 'Hi Fi Sky', and other modern digi tunes. +I don't feel like debugging these complex tunes now... +PSID-only playback has improved a lot since cSID-light-1.1, +and now many PlaySID-digis are supported as well if that still matters. + +The CPU and ADSR went through serious timing improvements, +it's now can be called cycle-exact, and hardrestarts and delaybugs are now +simulated well, no missed notes, whatever. + +This release also contains shared and static library forms for better +inclusion in other SID-playback projects (like FlexSID for example). +I completely eliminated global variables and definitions, except a +'cRSID_c64' instance which is for faster access of struct members. +(Emulated C64 memory accesses are made to this for faster operation.) + +More info (the API for the library) is seen in the 'libcRSID.h' file. + +It has been tried already on a SanDisk RockBox device and tunes not +containing digis are already played on it fine. Tunes with 2SID/3SID or +digis however are too much for the player (38MHz..192MHz ARM) at this form. +So maybe the code will be optimized by eliminating overheads of structs, +pointers, optimizing function-calls, inlining, and by other possible means. + +Hopefully in the near future the outdated TinySID engine will be replaced +in the RockBox source-tree... + +License is still WTF: Do what the fuck you want with this code, but + it would be nice mentioning me as the original author. |