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- Varmint's Audio Tools Revision History
- --------------------------------------
-
- Version 0.6 (beta) (May 27, 1995)
- -Major API rewrite
- - Changed about 50% of the function names
- - Rewrote some function families to behave similarly
- - Moved Mod and Midi crontrol to a function interface
- - Improved the demo for stability
- - Added Debug string
- - Implemented chaining and chain functions for Midi's, Mod's and
- sound effects.
- - Implemented enhance digital playback with frequency and volume
- control.
- - Raised Midi track limit from 16 to 32.
- - Added overhead calculation function
- - MANY bug fixes and enhancements
- - Fixed delay and timer functions
- - Fixed IRQ error bug
- - Protected key parts of the code from interruption.
- - Fixed bug in midiplayer that mishandled running status events.
- - Adjusted MPU reset code
- - made SBSetUp() more robust
- - Static Control with DMA flipflop ordering
- - cut default dma_bufferlen from 60 to 16.
- - Cleaned up header file
-
- Version 0.52 (beta)
- - MOD code optimization (20% improvement)
- - DSP buffer swapping (Fixes some static problems)
- - Vsync Timer function
- - Checks for adlib FM chip before sound blaster FM
- - Bug fixes
- - getenv() now dumps to a static variable
- - fixed patchmap bug in MIDI
- - File output in demo is now a debug option
- - SB_setup now allows a full range of IRQ's
- - Modifications
- - Midiplayer cleaned up
-
-
- Version 0.51 (beta)
- - Re-organized Interrupt guesses
- - Cleaned up irq test code
- - Cleaned up interrupt handling code
- - Took out clock delay function
- - Cleaned up timer functions
- - Removed nearly all inline assembler
- - Cleaned up dma_set() (fixed a minor bug with channels 4-7)
- - Took MIDI check out of SB_setup
- - Added separate mid/FM toggle variables
- - implement debug globals to turn some options on and off easily
- - sb_int disable interrupts
- - Antistatic byte
- (This cleanup fixed a lot of stack overflow and irq errors)
-
- Version 0.5 (beta) (April 16, 1995)
- - Added MPU-401 support
- - Added MOD file support
- - New mixing kernel (about 20%-30% more efficient)
- - Enhanced Sound blaster setup
- - support for 1.x versions (1.x mode still has a little static)
- - bug fix for unset blaster variables
- - No longer needs BLASTER varaible
- - Vertical retrace check function
- - Increased stack to 12K
- - A few minor tweaks I can't remember (my project file died)
- - Minor house cleaning
-
- Version 0.41 (beta) (March 19, 1995)
- - Stack overflow bug fix. (increased stack size ot 8K. Just a
- Band-aid, really.)
- - loadwave() now converts data to signed format (This makes things
- slightly more efficient in sb_int()
- - Cleaned up the code a little more
-
- Version 0.4 (beta) (March 11, 1995)
-
- - Moved sound handler off of int08 and onto the DSP interrupt.
- (Slight decrease in overhead).
- - Improved Midi tempo handling
- - Cleaned up the code. (no more compile-time errors and warnings!
- - Recompiled demo under large memory model (instead of HUGE)
-
- Version 0.3 (beta) (Feb 26, 1995)
-
- - reorganized mixing kernel and sound list to lower cpu overhead
- - added cpu overhead check
- - added limit to # of sound effects (adjustable)
- - add voice rectifier for midi (allows midi player to allocate voices
- More efficiently.)
- - added instrument loader (also wrote a graphical FM voice editor to
- be included with the distribution.)
- - Fixed major bug in loadwave (unallocated data pointer)
-
-
- Version 0.2 (beta) (Feb 23, 1995):
-
- - took out adlib recognition.
- - Made vector removing functions more stable
- - added more comments
- - ressurected DMAset function and fixed a few errors
- - added polldma()
- - getsbenv() converts to upper case now
- - Added far/huge sound data pointer option (see sound.h)
- - Made SB_SetUp() a little more informative (added error codes)
- - Converted to DMA-based digital playback
- - About 80% faster
- - Variable playback rate supported now!
-
-
- Version 0.1 (beta) (Feb 10, 1995):
-
- - Added background sound handler
- - Added comments everywhere
- - Added Midi functions
- - Added Wave reader
- - Removed about 50% of soundX functions
- - Added SetFreq()
- - Wrote Demo
-
-
-
- Prehistory (1993): SoundX by Peter Sprenger
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