CDi_MiSTer/doc/todo.md

TODOs and known issues

• MPEG Video output sometimes later, sometimes earlier? Only on FPGA?
• mv_pause() causes wrong data in FPGA? Can be reproduced since 260123 with Addams Family Disc 2
• Integration test to confirm equal output of MPEG video during simulation vs synthesis
  • MiSTer only Register for audio loudness analysis and for detecting a white dot from CD-i software
  • Automatic check of audio vs video sync
  • Playing a short video (from CD!) again and again on repeat
• Random hang of playback controls in Addams Family Disc 2. Movie still playing. Sudden rainbow colors.
  • Reproduced by frequently pausing and resuming
  • No regression. Always present since 251123
• Randomly no audio after pause in Addams Family
  • Reproducable with 260131 and 260222
  • Not occuring with 260123? Or very unlikely?
• Randomly no audio in Mad Dog McCree? Unclear reproduction
• Check random audio video out of sync (e.g. Mad Dog McCree)
• Check correct timing of DVC clipping functionality when scroll bit is reset
• Regression of "The Apprentice"?
  • The audio on the title screen sometimes has crackles. (~5% chance of occurrence)
  • Start of regression unknown
• Moving window homebrew test timing is broken with 260123
  • Was working in 260104. Also broken with 260116
  • Proposed fix with 40637f4904
  • Will be broken again with the addition of frame synced updates
• Add support for MPEG Layer I
  • Affected disc is "AIMS - Learning About Ecology (1995)(AIMS Multimedia)(US)"
• Frequency response of CDIC and MPEG audio output might not be 100% accurate
• Add support for an emulated Peacekeeper Revolver Light Gun
• "Uncover featuring Tatjana (Europe)" regressions?
  • Corruption of MPEG footage in single step mode?
• Regression of "Historia del Arte Español" (working in DVC rc2)
  • Blank video?
• Fix Christmas Crisis bonus ride
  • Might still stutter. Analysis required.
• "Mutant Rampage - Bodyslam" has a tendency to freeze?
• "The Last Bounty Hunter", "Drug Wars", "Mad Dog 2", "Who Shot Johnny Rock?" have regressions (works in rc2)?
• "Chaos Control" has video glitches?
• "The Lost Ride" has video and audio glitches
  • It changes Sequence Parameters on the fly
• "Crime Patrol" has video glitches?
• "Solar Crusade" has video glitches?
• "Brain Dead 13" has video glitches when switching MPEG streams
• "The Secret of Nimh" (Philips Edition) has the wrong frame rate? Sometimes?
• Slow motion with VCDs is desyncing audio and video
  • Too many frames in output FIFO
• Leaving the cake Puzzle in 7th Guest freezes (everytime?)
• Sound bugs on the police procedures disk?
• Find a better solution for reducing CPU speed
• Give a signal to the user when CPU data stalling occured
• Find a better solution for CD data stalling (take a screenshot)
  • PSX core seems to halt the whole machine to avoid this situation
• Fix regression: Audio hiccups during Philips Logo in Burn:Cycle
  • A workaround is CPU overclocking
• Investigate input responsiveness (skipped events?)
• Fix hang on audio track stop or change in media player
• Cheat support?
• Fix reset behaviour (Core is sometimes hanging after reset)
• Investigate desaturated colors / low contrast in "Photo CD Sample Disc"
  • Probably fixable with 16-235 to 0-255 scaling
  • More investigation needed
• Find a solution for the video mode reset during system resets
  • The ST flag is the issue here, causing a video mode change
• Add SNAC support (IR remote + wired controller)
  • RC5 support is added. A test using real hardware is required.
• CD+G
• Check compatibility with CDs that have track index 2 as opposed to the usual 0 and 1
  • Possible discs? "Philips CDI Format Test Disc 1 (Europe)" and a disc by Zeneca Pharmaceuticals Group, "An Interactive Medical Program"
• Possibly adding support for the Quizard arcade hardware

Low priority

• Try to utilize 24 bit audio sample size with HDMI, because 16 bit are not enough for CD-i audio hardware
  • The Mono I hardware has the option to mix 2x 16 bit together as single mono output.
  • To allow this, the MiSTer needs to halve the volume of a single channel to fix clipping
• Possibly adding support for other PCBs (like Mono II)
• Refurbish I2C for the front display and show the content as picture in picture during changes?
  • It might not even be required at all.
• Implement the speed setting of the 22ER9017 Touchpad
  • 22ER9021 should be enough right now