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Description:	Driver library for Prelude soundcard
Developer:	Thomas Wenzel, Oliver Gantert
Readme:	Short: Driver library for Prelude soundcard Author: Thomas Wenzel, Oliver Gantert Uploader: Oliver Gantert (prelude olivergantert de) Type: driver/audio Version: 5.6 Replaces: driver/audio/PreludeLib.lha Architecture: m68k-amigaos This is the low level driver library for the Prelude soundcard. To install, just copy it into libs: This version was created from the source code of version 5.4, kindly provided by Thomas Wenzel (www.toms-home.de). It was adapted to compile with vbcc (originally SAS/C), partially cleaned up, extended and fixed by Oliver Gantert. Please note that, although this version is intended to fix bugs, the compiler change might have introduced new ones that went unnoticed so far. If you think you found a problem, please try to reproduce that with version 5.4 and email me at the address given in the "Uploader" line of this readme. Thanks! Legal stuff ----------- This driver is copyrighted freeware. It may be distributed freely as long as no modifications are made to the executable and this document. A nominal fee may be asked to cover distribution costs. Requirements ------------ A Prelude soundcard, of course :-) This library supports the Prelude Z2, Prelude 1200 and Prelude ZII+ Note: WinUAE provides emulation of the Prelude Z2 and Prelude 1200. Revision history ---------------- 5.6 - Complete code refactoring and overall cleanup - Potential memory leaks fixed On most error conditions, the code would exit without freeing previously allocated resources - Prelude1200 illegal memory access fixed One write access to the reset register was using the Zorro card's offset, resulting in some random byte beyond PreludeBase being overwritten with null - Don't check for card.resource when trying to detect Prelude1200 It might be installed on a non-A1200 clock port - Configurable clock port (0..3) for Prelude1200 (ENV:Prelude/ClockPort) Base address no longer hardcoded 0xD80000 - Optimized parts of the assembler routines while adding relative addressing for the Prelude1200 - PrlSwitch() didn't really work as expected - GetPrlState() now returns status flags instead of MPEGit framecount As this function didn't return any meaningful value prior to v5.5, changing it should not break existing software that might call it - Replaced Disable()/Enable() calls to only affect EXTER interrupts 5.5 - More code cleanup - Compiled with vbcc 0.9g - GetPrlState() fixed - Supports Prelude ZII+ 5.4 - Major code cleanup - Improved MPEGit anti-clicking
Upload Date:	Oct 21 2020
Category:	Devices/Audio/Prelude
Download:	PreludeLib_5.6.lha
Size:	15 KB
Downloads:	692
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