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aminet/util/sys/Mu680x0Libs.readme

short : MuLib aware 680x0 libraries author : thorfdbg@alumni.tu-berlin.de (Thomas Richter) uploader : thorfdbg alumni tu-berlin de (Thomas Richter) type : util/sys version : 46.6 requires : an 68060, 040, 030 or 68020. architecture : m68k-amigaos >= 2.0.4 Filetype : application/x-lzh-compressed Size : 377.01K Date : 5-Jun-18 Download : 💾 https://de3.aminet.net/util/sys/Mu680x0Libs.lha
----------------------------------------------------------------------------- This release provides a new version of the 68060.library which includes now a more careful test for the I4 bug of the 68060. Apparently, the test used before could fail to detect the erratum on revision 5 68060 processors. This distribution also includes a new (still experimental) MMU setup helper "ACAInit" that opens the MMU pages for some older ACA (icomp) cards such that ACATune will hopefully continue to operate on them. To use ACAInit, copy it to LIBS:mmu, and add this command at the end of ENVARC:MMU-Configuration. Feedback welcome. ----------------------------------------------------------------------------- Only the 68030.library changed this time by keeping the data burst disabled. Data burst does not seem to provide much of an improvement and even seems to cause problems for some boards. ----------------------------------------------------------------------------- Release 46.4 does not change the 68040 and 68060 libraries at all, only the 68020 and 68030 libraries have been updated. The only change is that both libraries enable caching and (when applicable) bursting for the instruction and (if available) the data cache. Note that the 68040 and 68060 library do both since ever, i.e. they cache and burst data and instruction. This means in particular that the CPU command is no longer required to optimize the settings for 68020 and 68030 processors. No other functional changes have been made. ----------------------------------------------------------------------------- Release 46.3: Yes, this is really re-release of the 680x0 libraries for the MMU project, one that fixes one unfortunate, but serious left-over bug for single-precision operands of unimplemented opcodes. Note also that while the above email stays valid for probably a short time, you might want to contact me at thorfdbg@alumni.tu-berlin.de in the future. ----------------------------------------------------------------------------- This archive replaces the 68040Lib archive of former releases. It contains all processor libraries for the complete motorola CISC family, from the 68020 up to the 68060. ----------------------------------------------------------------------------- These are processor libraries that make use of the MMU.library to setup its MMU tree. Hence, the setup logic of this library has been streamlined as the complete MMU setup logic has been removed. Since it does not build an MMU tree itself, it will save approximately 200K of memory for an initial MMU tree which would be wasted otherwise. Moreover, this library makes use of the latest FPSP motorola FPU emulation core for both the 68040.library resp. 68060.library, and has been carefully hand-optimized. It does not include questionable patches, but is still configurable thru the mmu.library "MMU-Configuration" file. All libraries within this archive are VMM aware and will emulate non-implemented instructions even if placed in virtual memory. Special care must be taken to use this library on P5 hardware which is, unfortunately, not always auto-configuring. A setup script is included in the archive. This library *IS NOT* a must if you want to use the mmu.library. It is an option which was written to reduce memory usage. A new 680x0.library and a patch for SetPatch is included to get rid of the 68040 dummy libraries which are still in use. The libraries provide LVOs to control the FPU exception processing, and a shell tool, named "FPU", to configure it. Moreover, the 68040.library and 68060.library add a new resource to your system, the "fpsp.resource". This resource provides the emulation routines for unimplemented instructions of the 68040 and the 68060. It is installed by the libraries on startup and made use of as soon as the 68040/060 detects an FPU instruction it can't handle itself. It is also used by an external tool, FastIEEE, which redirects the mathieeee...library vectors to this resource which hence avoids an unecessery emulation exception the libs would have to handle otherwise. The math libraries included in Os 3.9 will detect and use this resource themselves, so FastIEEE is not required for the latest Os release. Note that a higher version number does not always mean better code... ------------------------------------------------------------------------------ This library is part of the MMULib distribution. To find out more about the mmu.library and its goals, download util/libs/MMULib.lha. ------------------------------------------------------------------------------ Quick installation notes: - Copy LIBS/mmu.library to LIBS: - Copy LIBS/680#?0.library to LIBS: - Optionally: Read the MMU.guide how to patch SetPatch and how to install the 680x0.library. - Copy ENVARC/MMU-Configuration to ENVARC: (not essential) ------------------------------------------------------------------------------ The THOR-Software Licence (v2, 24th June 1998) This License applies to the computer programs known as the "mmu.library", the "680x0.library" and the "68040.library V40" The "Program", below, refers to such program. The "Archive" refers to the package of distribution, as prepared by the author of the Program, Thomas Richter. Each licensee is addressed as "you". The Program and the data in the archive are freely distributable under the restrictions stated below, but are also Copyright (c) Thomas Richter. Distribution of the Program, the Archive and the data in the Archive by a commercial organization without written permission from the author to any third party is prohibited if any payment is made in connection with such distribution, whether directly (as in payment for a copy of the Program) or indirectly (as in payment for some service related to the Program, or payment for some product or service that includes a copy of the Program "without charge"; these are only examples, and not an exhaustive enumeration of prohibited activities). However, the following methods of distribution involving payment shall not in and of themselves be a violation of this restriction: (i) Posting the Program on a public access information storage and retrieval service for which a fee is received for retrieving information (such as an on-line service), provided that the fee is not content-dependent (i.e., the fee would be the same for retrieving the same volume of information consisting of random data). (ii) Distributing the Program on a CD-ROM, provided that a) the Archive is reproduced entirely and verbatim on such CD-ROM, including especially this licence agreement; b) the CD-ROM is made available to the public for a nominal fee only, c) a copy of the CD is made available to the author for free except for shipment costs, and d) provided further that all information on such CD-ROM is redistributable for non-commercial purposes without charge. Redistribution of a modified version of the Archive, the Program or the contents of the Archive is prohibited in any way, by any organization, regardless whether commercial or non-commercial. Everything must be kept together, in original and unmodified form. Limitations. THE PROGRAM IS PROVIDED TO YOU "AS IS", WITHOUT WARRANTY. THERE IS NO WARRANTY FOR THE PROGRAM, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. IF YOU DO NOT ACCEPT THIS LICENCE, YOU MUST DELETE THE PROGRAM, THE ARCHIVE AND ALL DATA OF THIS ARCHIVE FROM YOUR STORAGE SYSTEM. YOU ACCEPT THIS LICENCE BY USING OR REDISTRIBUTING THE PROGRAM. Thomas Richter ----------------------------------------------------------------------------- So long, Thomas (June 2018)
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