Skip to content

Latest commit

 

History

History
97 lines (74 loc) · 4.92 KB

RELEASE_NOTES.md

File metadata and controls

97 lines (74 loc) · 4.92 KB
Raw

Release Notes

New release 1.2 2023/11/24

New Features/Improvements:

PC-FX Improvements / BugFixes:

  • Adds Azerty Keyboard support for Debugging functions
  • Improve PC-FX palette editor - In debug mode, change PC-FX palette editor to show 16-bit values, with a colour swatch in the right-hand side to demonstrate actual colour (based on YUV)
  • PSG Tweaks Update channel 1 frequency cache upon LFO frequency register writes (the way the channel 1 frequency and LFO frequency are combined is still inaccurate, however, causing frequency update timing granularity to be too high). Ported over MDFN 1.31.0 release

PC-Engine Improvements / Bugfixes:

  • PSG Tweaks Update channel 1 frequency cache upon LFO frequency register writes (the way the channel 1 frequency and LFO frequency are combined is still inaccurate, however, causing frequency update timing granularity to be too high). Ported over MDFN 1.31.0 release
  • Backup memory visibility was previously inconsistent between HuCard and CDROM, and locking behaviour was not always correct. Now, physical memory at $1EE000 should give the "processor's view" of the memory, depending on lock/unlock status, and "Backup Memory" screen should show the actual data (Note: HuCard startup state is still default 'unlocked' which is not correct). Also, $1807 register writes should be able to re-lock memory
  • Remove Incorrect IRQ Acknowledgement scenario: TIMER interrupt is supposed to be acknowledged by write to $1403. Original code was also acknowledging it on reads from $1402, which was not supported by official documentation.
  • Fix junk appearing on PCE Debug palette screen
  • Change Default gamesave name removing hash value for BRAM retention and compatbilty when doing PCE dev builds
  • Fix improper CDROM BRAM locking in debugger
  • PC Engine music player VU meter shows incorrect channels
  • Fix VU Meter display
  • Other minor changes to warnings and defaults
  • Add CI builds for Windows / Linux

Other items:

  • This release also contains several Wonderswan module updates that improve emulation accuracy

New release 1.1 2022/08/21

New Features/Improvements:

PC-FX:

  • Step by frame, or scanline in debugger (issue 101, use Ctrl-S / Shift-S)

PC-Engine:

  • Partial screen-render as-it-happens when debugging (issue 65)
  • Step by frame, or scanline in debugger (issue 74, use Ctrl-S / Shift-S)
  • Expand frame/scanline step mode to graphics and memory viewers (issue 94)

Bugfixes/Default Setting Changes:

PC-Engine

  • Fix timing of when Burst bit is latched (issues 8, 12)
  • Fix treatment of BG background blank bit (issue 84)
  • Approximate MWR VRAM access wait states (experimental, partial fix of issues 5 and 56, pce.mwrtiming_approx in mednafen.cfg, defaults to original behaviour (off))
  • Change default codec paramters to use PNG (issue 88)
  • Fix treatment of CDROM "Read TOC" command $DE (issue 98)
  • Adjust CDROM data transfer rate to 150KB/s (experimental, partial fix of issue 102, pce.cdspeed (120KB/s=0 vs. 150KB/s=1) and pce.cdthrottle (to restabilize Sherlock Holmes) in mednafen.cfg - both default to original behaviour (off))

New release 1.0 2022/06/05

New Features/Improvements:

PC-FX

  • Separate 'external backup memory' to its own file (pcfx.external_bram_file in mednafen.cfg)
  • Add 16-bit 'word' editing for video memory

PC Engine

  • Calculated CDROM Head Seek Time to match original console
  • Implement Memory Base 128 functionality (pce.memorybase128_enable and pce.memorybase128_file in mednafen.cfg)
  • Add 16-bit 'word' editing for video memory
  • Change Palette editor to G/R/B format with actual display of colors
  • Interpret data as if it is a SAT entry for certain type of memory
  • Add Sprite Bounding Box display toggle (CTRL + 0)
  • Toggle PSG channel output (ALT+1 thorugh ALT+6)
  • Add substantial debug logging for CDROM BIOS calls
  • Add debug logging for ADPCM accesses
  • Add 'seconds' counter to debug screen
  • Add 'frame' counter to debug screen

General

  • Significant improvements to debugger from jbrandwood's 'mednafen-happyeyes' modifications
  • Display memory near stack pointer for systems with zero-page and single-page stack pointers
  • Add option to halt execution on "Alt-D" to enter debug screen (debugger.haltondebug in mednafen.cfg)
  • Make debug overlay opacity persist between runs (debugger.opacity in mednafen.cfg)
  • Allow debug overlay to fractionally scale to fit window (debugger.fractionalscaling in mednafen.cfg)

Bugfixes/Default Setting Changes:

PC-FX

  • Make 'external backup memory' 128KB, same as FX-BMP (not 32KB)

PC-Engine

  • Increase visible Scanline defaults
  • Change Audio defaults to match real hardware
  • Enable Horizontal Overscan
  • Set defaults for interpolation to 'off', not 'bilinear interpolation'

Documentation:

  • Add initial instructions for linux compile in top folder

Starting Release: Mednafen 1.29.0

  • Reconsititued Mednafen sources with a version history for review