changelog.txt

Changelog

31/03/2014 (DD/MM/YYYY)
= v2.0 =
-- Initial release --
- Ported to AS
- Replaced local labels with unique labels
- Added Hivebrain labels
- Added Mega PCM
- Applied 'Optimising Z80 Stops' guide
- Added SMPS2ASM
- Added S2 Priorities
- Added S2 DACs
- Added S2 PSGs
- Added Spin Dash support
- Added Gloop support
- Fixed bug causing sounds with an index entry of >=$40 to crash
- Fixed v_playsnd3 to be fully usable
- Replaced S1's music with the original Clone Driver's music
- Replaced S1's sound effects with S2's sound effects
- Relocated Silence value to $00
- Extended starting sound slot from $81 to $01
- Relocated MusicIndex to above music 'BINCLUDE's
- Removed special sound effect code
- Relocated *special* special SFXs from $E0-$E4 to $F9-$FD

01/04/2014
= v2.0.1 =
- Removed unused SoundIndex entry
- Removed redundant Sega PCM alignment
- Fixed sound priority
- Used constants to make sound group changing more accessible
- Reworded >=$E0 sound bug explanation

15/04/2014
= v2.1 =
- Fixed Priorities list not including the Sound Flags ($FB-$FF)
- Adapted Sonic 2's feature of having the priorities system only apply to SFXs
- Added Sound Flag $FA, StopSFX, now back from Sonic 2, and fully functional
- Added S3+ PSG instruments
- Added S3+ DAC samples
- Added S3+ Universal Voice Bank
- Modified _smps2asm_inc.asm to have an option for the Clone Driver 2, 'SonicDriverVer = 0'
- Removed remainder of the Special SFXs ($D0-$DF), freeing up $60 bytes of RAM
- Rearranged data and indexes:
	- Data (UniVoiceBank, PSG, Music, SFX) at bottom
	- Indexes (PSG, Music, SFX) at top
- Music and SFXs use absolute (longword) pointers for their Voices, this is to allow UniVoiceBank support
- Removed all 'Go_Index' nonsense, references are now direct
- Made Sega PCM ID dynamic
- Added Flag IDs

19/04/2014
= v2.1.1 =
- Compressed Mega PCM Z80 code, DAC tables are still uncompressed though
- Reintroduced Mega PCM .wav compatibility
- Matched S2 DAC pitches to those in the S2 driver, but they're still inaccurate, the snare seems to be BETWEEN 3 and 4
- Added Crackers DACs
- Fixed SMPS2ASM's dLowerEchoedClapHit entry

20/04/2014
= v2.1.2 =
- Relocated Coord. flags from $E0+ to $FE+, as a result, there are now free DAC slots and a total of $7C DAC slots
- Corrected S3/K/3D DAC order
- Named all S3/K/3D/C DACs
- Removed cfStopSpecialFM4

16/06/2014
= v2.1.3 =
- Removed more Special SFX remnants, namely v_special_voice_ptr
- Freed up a tiny amount of RAM by turning some byte-sized flags to bit-size. They are grouped under the RAM address 'misc_flags'. Flags include:
	- v_gloop_toggle
	- Spindash_LastSound_Flag
	- v_ring_speaker
	- f_updating_dac
	- f_fadein_flag
- f_updating_dac and f_fadein_flag been changed to a bit, so their 'On' state isn't defined by being set to $80, but to 1
- Removed f_fastmusic entirely, it's not even used in this version of the Community disasm. It's just v_1up_ram_copy's copy of f_speedup
- Fixed typo in instruction under PSFX_NotSpinDashRev label
- Rearranged RAM variables to group all unused RAM in one area ($19-$39)
- Split music and sound 'include's from main asm file, allowing users to update their s1.sounddriver.asm without overwriting their custom music and sound 'include's
- Done the above to the music and SFX pointers, also. Said pointers have also been moved to above their respective 'include's, for sake the of ease when updating
- Added missing equate under Sound_PlaySpecial
- Modified installation guide to feature a full-speed PAL audio fix, straight from MJ's Moonwalker

29/06/2014
= v2.2 =
- Rearranged indexes and data again, now they are all located after the driver's code
- Reformatted PSGDoVolFX
- Ported three new PSG flags, two are used by S3K's PSGs, the final is unused, but added for the sake of completion
- Now using stock S3K PSGs instead of converted-to-S1 equivalents
- Ported S1 & S2 PSGs
- Added missing 'even' after the Universal Voice Bank
- Optimised the unused coordination flags' code
- Optimised some code under Sound_Play
- Corrected some comments
- Ported S3K's TempoWait, allowing full access to S3K-style tempos
- Added S2 speedup tempos, converted to S3K tempos
- Replaced the Original Clone Driver's modified S2 music with stock S2 music

01/07/2014
= v2.2.1 =
- Removed 68K-freeze code in PlaySega, it has negative effects in Sonic 2
- Added coordination flag cfSilenceStopTrack
- Added coordination flag cfPlayDACSample
- Added coordination flag cfPlaySound
- Added coordination flag cfSetKey
- Added coordination flag cfSetVolume
- Added FMSilenceChannel
- Removed two unused coordination flags
- Redone PAL mode
- Replicated S2's ability to force PAL slowness on certain songs

03/07/2014
= v2.2.1.1 =
- Optimised PAL mode
- Ported S2's PAL timer system
- Made PAL_Audio_CountDown part of the Clone Driver's RAM

04/07/2014
= v2.2.1.2 =
- Fixed broken PAL mode double-update code. JSRs had to be remove because they interfered with the Stack

18/07/2014
= v2.2.2 =
- Added fourth sound queue
- Replaced all 'jsr's with 'bsr.w's, and 'jmp's with 'bra.w's
- Made small optimisations under PBGM_BGMLoadMusic, PSGUpdate_NoteGoing, SetVoice_SendTL, UnpausedAllFM, FadeIn_FadedDone, FM_UpdateFreq
- Renamed Snd_FadeOutSFX and Snd_FadeOutSFX2
- Changed bcc into bhs under PSFX_TimerActive
- Optimised some of the Spin Dash rev code
- Optimised waitYM macro (nothing uses d2 afterwards, and bit instructions can affect memory)
- Restored cfUnused1 (cfSetCommunication)
- Removed Size_of_SegaPCM macro (unused leftover from 2.0 :P)
- Fixed error made while removing Special SFX code under FadeOut_TrackPSG
- Fixed (my) error in the smpsStopSpecial macro
- Optimised some code around PSFX_SFXInitPSG (code was made less efficient back when I was trying to fix the $40+ index bug)
- Fixed Sound_PlaySpecial (it didn't support absolute voice pointers, and also has the $40+ index bug)

14/08/2014
= v2.2.2.1 =
- Made slight optimisation around the branch to TempoWait by removing the branch altogether :P
- Optimised some lsl into add
- Optimised some clr.l into move.l
- Optimised some branches from .w to .s
- Made a bunch of bsr.w into bsr.s
- Fixed (my) error in _smps2asm_inc.asm that caused missing coordination flags to not be detected

11/09/2014
= v2.2.3 =
- Added S3K's additional PSG frequencies
- Added S3K's continuous SFX system
- Split sound priorities and speedup tempos from main asm into s1.sounddriver.other.asm

13/09/2014
= v2.2.3.1 =
- Moved troublesome PSG frequency
- Reverted PSGPitchConvert to an earlier, more readable state

06/10/2014
= v2.2.4 =
- Fixed FM6 fade-in
- Modified cfFadeToPrevious to work on FM and PSG tracks
- Optimised some locrets (recycling!)
- Annotated Vladikcomper's modified WriteFMI(I)
- Removed a startZ80 that I missed back in v2.0
- Renamed several constants to be more S1-like
- Restored original local labels (With tweaks for compatibility)
- Optimised lea Clone_Driver_RAM into .w
- Optimised 68k version of PlaySega
- Ported S3K's NoteFill
- Optimised some 'bsr & bra' into 'pea & bra'
- Further optimised the waitYM macro by using tst.b instead of btst
- Optimised all btst #7 to tst
- Even further optimised waitYM by moving ym2612_a0 to a register
- Updated channel RAM addresses description
- Optimised NoteFillUpdate

15/10/2014
= v2.2.4.1 =
- Optimised WriteFMI(I) with a nice trick I picked up from Ristar's driver
- Optimised some writes to psg_input
- Optimised all adda.x #x,aN to lea x(aN),aN
- Optimised FM and PSG's .gotduration by replacing them with SetDuration_pea
- Added a nop to WaitYM to avoid missed writes
- Optimised PSG flags by reordering their checks in order of most-to-least common
- Replaced a 'branch to rts' with an rts
- Restored the music and SFXs to their 'as-of-2011' state. They shouldn't be modified in the first place
- Added to _smps2asm_inc.asm to work around DAC typo

17/10/2014
= v2.2.4.1b =
- Added several toggles to allow for Sonic 1 support

27/12/2014
= v2.2.5 =
- Updated to latest Git (fixing a newly-pointed-out bug along the way)
- Merged all compatibility layers into s1.sounddriver.compatibility.asm
- Moved v2.2.4.1b's toggles to s1.sounddriver.compatibility.asm
- Reverted some dangerous 'moveq's to 'move.b's
- Optimised a branch under PSGUpdateVolFX
- Optimised a branch under VolEnv_Reset
- Removed a branch under VolEnv_Off by moving it above the branch's target
- Size-optimised MegaPCM, reducing the uncompressed binary's size from 210h to 1E5h
- Added another nop instruction to waitYM (the beginning of S2's title screen theme plays a goofy note in Regen with just the one)
- Optimised FMSetFreq by making it write directly from FM_Notes to zTrackFreq
- Replaced the 'clr.b's under bgmnot1up with a faster moveq/move.b combination
- Removed the redundant 'clr.b v_sndprio'
- Optimised Sound_PlayBGM and Sound_PlaySpecial by making them write their voice pointers directly to v_voice_ptr/v_special_voice_ptr (old leftover from v2.1's longword voice pointer hack)
- Optimised SpeedUpMusic, SpeedUpMusic_1up, SlowDownMusic and SlowDownMusic_1up with some register usage
- Optimised some zTrackVolume(a5) usage under DoFadeOut
- Optimised .bgm_psgloadloop by using an addq to skip the 'redundant' byte
- Optimised Sound_ChkValue by removing the redundant check for Sound Commands
- bsr -> bra in .specfmdone
- Renamed all s1.sounddriver files and moved them to the sound folder
- Changed which v_sndprio clear is used in Sound_PlayBGM (Sonic 2 uses the last one)
- Added new waitYMspec macro that uses parameter as target for tst
- Used above modification to optimise WriteFMI
- Optimised cfSetPSGNoise with better register use
- Rearranged files at end of driver (Mega PCM, PSGs, music, sounds, others) to put many within 'SoundIndex(pc)' range
- Fixed oversight in cfNoteFillS3K (d1 isn't loaded if tempo divider = 1), increasing compatibility with S3K music
- Added two missing S1 equates
- Excluded nops from waitYM loop
- Used more appropriate locret under FMNoteOn
- Added S3K tweak to cfSetPSGTone and cfSetVoice

21/02/2015
= v2.2.5.1 =
- Updated SMPS2ASM

03/03/2015
= v2.2.5.2 =
- Added waitZ80 macro, for S1 compatibility
- Added cfSendFMI
- Replaced cfOpF9 with above
- Added cfChanFMCommand
- Added some flag documentation from S3K and flamewing's driver
- Better-formatted Sonic 2 Clone Driver v2 - Compatibility.asm
- Relocated DAC ID equates from _smps2asm_inc.asm to Sonic 2 Clone Driver v2 - Compatibility.asm
- Made said IDs dynamic, in the same way as the music and SFXs
- Corrected IDs to account for absent dHipHopHitKick3
- Added id function to Sonic 2 Clone Driver v2 - Compatibility.asm

09/03/2015
= v2.2.6 =
- Sonic 2-ifications
	- Added to FMUpdateTrack and PSGUpdateTrack the way S2's driver does
	- Made TrackSetRest no longer continue to FinishTrackUpdate
	- Fixed modulation on rests by adding a check to DoModulation (noticeable at start of ARZ's theme after it's looped)
	- Relocated a check in FMPrepareNote to occur a little earlier
	- Changed a reference to a locret in Sound_PlayBGM with one to .bgm_loadMusic, which should make it so that the extra life music can interrupt itself
	- Made .bgmnot1up clear v_fadeout_counter
	- .bmg_fmloadloop and .bgm_psgloadloop now set the 'track at rest' bit, avoiding hanging notes (noticeable at start of DEZ's theme)
	- Optimised .silencefm6 using some S2 logic
	- Sound_PlaySFX no longer checks v_fadeout_counter
	- FadeOutMusic no longer calls FadeOutSFX
	- SpeedUpMusic and SlowDownMusic no longer set v_main_tempo_timeout
	- PSGSetVolume now corrects values that are >=$10
	- PSGSetFreq and .restpsg don't continue to FinishTrackUpdate
	- An 'add' in PSGSendVolume is replaced with an 'ori'
	- cfPanningAMSFMS has an additional check
	- Added a (commented out) call to FadeOutSFX in Sound_PlayBGM
- .nospeedshoes no longer sets v_main_tempo_timeout to the header tempo. This is to avoid unintended tempo overflow on the first frame of playback, delaying the song by a frame. This also helps to prevent hanging notes (noticeable at start of DEZ's theme)
- Removed useless 'even' from under FMDACInitBytes
- Removed last '0's from FMDACInitBytes and PSGInitBytes (were actually 'even's)

09/07/2015
= v2.3 =
- Made FadeOutSFX use d6 instead of d7, so that it doesn't conflict with Sound_PlayBGM
- Optimised PSG envelopes with more efficient use of flags
- Made previous version's bugs toggleable with Fix_DriverBugs
- Added Valley Bell's Sega chant pan fix
- Added Valley Bell's 0 FM track fix
- Added Valley Bell's cfFadeInToPrevious PSG noise type fix
- Added a (commented out) call to FadeOutSpecSFX in Sound_PlayBGM
- Un-commented-out the calls under Sound_PlayBGM
- S2-ified FadeOutSFX
- Corrected StopSoundAndMusic comment
- Improved cfFadeInToPrevious FM6 fix
- Reduced RAM usage by employing a trick from S&K's driver: the SFX/special SFX share RAM with the 1up music backup
- Switched to using 'STRUCT' to define track RAM
- Defined driver RAM with phase/ds.b combo
- Split v_1up_ram_copy into v_1up_ram_copy and v_1up_variables (variables now go after tracks)
- As part of the SFX/track backup share, the playback control bytes of all tracks are separately backed-up
- Made Sound_PlayBGM's extra life code clear the special SFX tracks' 'is playing' bit
- Special SFX code above FMDACInitBytes now uses tst.b instead of tst.w
- Moved v_special_voice_ptr back next to v_voice_ptr (RAM is dynamic now, so it can go here without wasting any RAM if unused)
- Made continuous SFX RAM toggleable
- Reduced zTrack size to $2E by changing LoopCounters from 4 bytes to 2 bytes, as S&K's driver has it
- Reduced zTrack size to $2C with some track-specific RAM usage
- FinishTrackUpdate no longer clears VolFlutter on non-PSG tracks
- Removed now-useless label (loc_721B6)

01/12/2015
= v2.4 =
- Added Vladikcomper's fix for interrupt crash, and optimisation of horizontal interrupts
- Made Mega PCM assemble with the rest of the driver
- Merged DAC_Table into Mega PCM source code
- Split 'Sonic 2 Clone Driver v2.asm' from 'Sonic 2 Clone Driver v2 - Compatibility.asm', because of how constants are now generated
- Added DAC volume control
- Removed some excessive optimisation
- Removed needless 'Clownacy |' comments
- Removed pointless commented-out code
- Rearranged constants and flags, allowing DAC ID constants to be used in your hack's code
- Switched back to S1's Sega chant sample (S2's is just S1's with a bit cut off at the end)
- Fixed mistake in Mega PCM's code I made at some point (an iy+3 was changed to iy+2, breaking panning)
- Made everything case-sensitive-friendly

05/12/2015
= v2.4.1 =
- Added (proper, unlike S2!) fix for music interrupting SFX, causing distortion
- Made .silencefm6 more like it was in S2's driver
- Removed some instances where DAC is enabled with WriteFMI. Mega PCM can do that on its own
- Allowed FM6 to enable itself, letting a song use both FM6 and DAC tracks (the channel itself alternates, so they can't run at the same time)
- Removed some instances where DAC is disabled with WriteFMI. The above change means FM6 can do that on its own
- Made PlaySega (68k mode) manually enable DAC

12/12/2015
= v2.4.2 =
- Removed redundant instructions under .silencefm6
- Removed WriteFMIorIIMain, and merged its function into the one thing that used it, like S2's driver
- Fixed PSG noise channel not shutting up when a new song starts
- Rewrote PauseMusic to be more like it was in S2's driver
- Fixed Mega PCM DAC samples not pausing properly (holy shit this has been here since v2.0)

18/01/2016
= v2.5 =
- Fixed hanging notes on music that doesn't define all tracks
- Optimised some track RAM write looping
- Added missing S3/S3D PSG envelopes
- Overhauled SMPS2ASM PSG defining
- Slightly lowered pitch on all DAC samples
- Updated SMPS2ASM
- Renamed DAC_Entry arguments to not conflict with comments
- Removed support for other drivers from _smps2asm_inc.asm (a pain to maintain)
- Updated sound driver disassembly (track RAM is better-defined)
- Made some 'move' instructions safer
- Made disabled coordination flags safer
- Removed old unused SMPS 68k Type 1a track pointers
- Made SFX_SFXChannelRAM and SFX_BGMChannelRAM word-sized
- Ported SMPS Z80's TL handling, fixing S3K DEZ1 (bit 7 lets it be changed by volume)
- Added support for negative transpositions, fixing S3D intro (S3D uses these)
- Shrinked FM_Notes, to allow for negative transpositions
- Removed ReverseFreqs. It was fun while it lasted, but I'm not about to waste time figuring out how to make a negative shrunken FM_Notes
- Corrected smpsVcTotalLevel errors in OOZ, Ending, and Title Screen
- Corrected smpsVcTotalLevel errors in SFX 55 and 5C (D5 and DC)
- Corrected FM5 channel transposition in SFX BC (Spin Dash release)
- Added 'readme.txt' files to 'music' and 'SFX' folders, detailing bugfixes made and where to find SMPS2ASM
- Added URLs to Mega PCM's thread at start of Mega PCM files
- Split PSG volume envelopes to 'Sonic 2 Clone Driver v2 - PSG Volume Envelopes.asm'
- Split FM Universal Voice Bank to 'Sonic 2 Clone Driver v2 - FM Universal Voice Bank.asm'
- Slightly reordered data at end of driver
- Added option to not include FM Universal Voice Bank
- Added option to not include certain games' PSG volume envelopes
- Removed SetDuration_pea
- Fixed cfSetPSGTone when it's run on FM track (forgot to advance the track pointer)
- Enhanced SMPS2ASM to ignore S3-specific smpsFade
- Reverted bugged optimisations to PSG volume envelopes (fixes VVZ2)
- Added support for negative track pointers, fixing SFX CC (holy cow, another one I haven't noticed since v2.0)

02/07/2016
= v2.6 =
- New DPCM tables were ported from SMPS-Treasure, speeding up DPCM loop (unlike SMPS-Treasure, these tables are generated by the DAC driver during initialisation, so they don't waste ROM like the volume table)
- Made Spin Dash toggleable, so its code isn't assembled if you're not using it
- Fixed bug during song initialisation that caused the last two sound queues to be accidentally cleared
- Ported S2's version of Sound_Play (zCycleQueue)
- Music/SFX/SpecSFX data has been merged into 'metadata tables', simplifying their addition or modification (for example, the music metadata table contains the music's pointer, speed-shoes tempo, and playback flags)
- Restored compatibility with official (flamewing's) SMPS2ASM
- All tracks use zTrack.VoicePtr now (saves some RAM)
- Overall RAM cleanup
- Some Z80 access was made 'safe' (interrupt can't interrupt Z80 bus request, and accidentally deassert it)
- Fixed OOZ oil slide SFX (was updating FM volume on a PSG channel)
- Added check to prevent above bug from having any negative effects, just like S2's driver
- A branch is available that uses the stock v1.1 MegaPCM

12/08/2016
= v2.7 =
- Support for the 32X
- Support for four PWM tracks
- Fixed bug where Special SFX incorrectly mute PSG3 while it's being used by SFX (thanks, Markey)
- Added proper volume cap check to DoFadeIn (thanks again, Markey)
- Fixed bug where PSG 1&2 are not muted during SFX initialisation (Markey, stop, please)
- Added a bugfix from S2's driver that stops cfStopTrack from altering the stack too much on DAC channels
- Tried to reduce name collision with MegaPCM by adding a prefix to most labels
- UpdateDAC has been restructured, so its stack usage is identical to FM and PSG (kind of undoing that last bugfix :( )
- Made MegaPCM check that YM2612 isn't busy before enabling DAC (fixes muted drums at start of some songs)
- SFX now properly update on the frame that a new song is played

20/03/2020
= v2.7+ =
- Changed FM voice format, like what S2's driver did, for optimised reading
- Split DAC table from Mega PCM Z80 .asm file
- Rearranged file/folder structure, so files meant for the user to edit (like DAC samples and PSG envelopes) are in the root folder, the off-limits engine is in the 'engine' folder, and the optional/only-useful-during-installation files are kept in an 'extra' folder
- Added SMPS2ASM equates for Chaotix' PWM samples (these equates were also applied to the included Chaotix dump)
- Fixed typo in smpsHeaderVoiceUVB, causing errors
- Restored music/SFX/Special SFX FM voice pointer to relative 16-bit value
- Changed some labels and symbols to suit ValleyBell's suggestions (https://vgmrips.net/misc/SMPS_Disasm_Terms.txt)
- Added PWMSilenceAll, so PWM is silenced with the rest of the driver
- Changed internal branch tables to offset tables (requires modifications to user file 'Sound IDs.asm')
- Removed 68k-based Sega chant playback support (fewer dependencies)
- Removed v_playsnd0 and f_voice_selector, after making them redundant
- Renamed UpdateMusic, so old S1 code that accidentally still called the driver should correctly flag an error now
- In-driver track RAM addresses are now relative (this is in preparation of possible binary-blob)
- Changed PauseMusic to not "resume" DAC channel (this should be pointless, since that track doesn't use voices, and Mega PCM handles panning)
- Removed a redundant bugfix (sorry, Markey)
- Removed PlaybackControlBackup from track RAM/SMPS_Track (relevant data is stored in unused bit of PlaybackControl)
- Fixed bug introduced in v2.7, where the extra life jingle would cause the level's music to have a delayed DAC track
- Made PWM be silenced on song start (consider PWM SFX extremely experimental; use with caution)
- Added support for disabling noise mode on PSG 3 (this is done in the same way as SMPS Z80)
- Adjusted PSG fading, so it's more in-line with FM and DAC (fades in roughly $20 frames, rather than $10)
- Changed cfChangeFMVolume to not run at all on PSG channels (the SMPS Z80 way)
- Added bugfix for PSG fading (volume updates would conflict with volume envelopes)
- Fixed held volume envelops only updating the volume every other frame (silly SMPS 68k Type 2)
- Added support for negative FM voice pointers in Special SFX
- Changed DAC_Entry pitch value so it's the playback speed in Hz instead of a djnz loop counter

02/07/2021
= v2.8 =
- Added FM volume attenuation clamping, to prevent overflow (this bug would cause Sonic 2's final boss music to have an extremely loud instrument while fading-in after a 1-UP jingle finishes playing)
- Inconsistent DAC/FM6 panning behaviour has been corrected
- Ported SMPS Z80-style frequency modulation, fixing several issues in SMPS Z80 songs (such as broken pitch bends at the start of Sonic & Knuckles' credits music)
- Bugs in the 'smpsSetVol' coordination flag have been corrected (fixes missing PSG notes in the Sonic & Knuckles credits music)
- Ported FM frequency modulation from SMPS 68k Type 2, so that Carnival Night Zone's and Launch Base Zone's music are finally compatible with this driver
- Fix note timeout being performed on first frame of playback
- The sound queue processing logic has been completely remade, hopefully fixing a number of subtle bugs (the old code was *very* bad)
- Assorted optimisations
- TempoWait can no longer delay tracks on their first frame of playback (this is a proper fix to the hanging-note bug that Sonic 2's driver used a work-around for, which can sometimes be heard at the start of Sonic 2's Death Egg Zone music)
- Mega PCM has been replaced with a custom two-channel DAC driver: the first channel is used by music, while the second channel can be used by DAC SFX
- Fix SFX and Special SFX tracks not being updated on the same frame that a music track uses the 'fade to prevous song' coordination flag
- Fading-in has been overhauled, so that SFX are no longer muted while fading is performed: rather, SFX are now faded along with everything else
- Bugs relating to PSG volume values have been corrected
- The dependency on the 'Graphics_Flags'/'v_megadrive' variable has been removed, easing the process of integrating this driver into homebrew

02/07/2021
= v2.8.0.1 =
- Fixed the 'Settings.asm' files for Sonic 1 and Sonic 2

XX/XX/XXXX
= v2.8.1 =
- Moved Size_of_DAC_driver_guess out of 'Settings.asm'
- Added a set of SMPS2ASM songs and SFX in the 'extras/SMPS2ASM files' directory, including...
-- Sonic 1
-- Sonic 2
-- Sonic 3
-- Sonic 3 (prototype) (music only)
-- Sonic 3D Blast
-- Knuckles' Chaotix (music only)
-- Sonic CD (SFX only)
- Fixed a race condition in 'SMPS_Setup' that could cause a freeze