Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!gatech!udel!mmdf From: 451061%UOTTAWA.BITNET@cornellc.cit.cornell.edu (Valentin Pepelea) Newsgroups: comp.sys.amiga Subject: Re: New version of Zoo for the Amiga Message-ID: <12312@louie.udel.EDU> Date: 5 Apr 89 02:58:28 GMT Sender: mmdf@udel.EDU Lines: 30 "J. Brian Waters" writes in message <6465@bsu-cs.UUCP> > The new release of zoo will be out in a few more days for the Amiga and will > have some of the following features: > > a) it will preserve the archive bit on all files at extraction > (after all if it got into a zoo it must have been archived at one > time) > > b) it features a much improved compression and decompression routine > utilizing many new tricks I have learned such as using the > upper 8 bits of an address register as a data tag, and self > modifying code. The use of move ccr, also helps. No, no, no, no! You are definitely not allowed to use the upper 8 bits of an address register to store data. 32-bit systems are using all 32 bits to access memory. And don't used self-modifying code either, that will not work on any systems which have an instruction-only chache. In other words, you code will not work with any 68020 systems, nor 68030 systems which also have a data- only cache. > Brian Waters !{iuvax|pur-ee}!bsu-cs!jbwaters Valentin _________________________________________________________________________ "An operating system without Name: Valentin Pepelea virtual memory is an operating Phonet: (613) 233-1821 system without virtue." Bitnet: 451061@Uottawa.bitnet Usenet: Use cunyvm.cuny.edu gate - Ancient Inca Proverb Planet: 451061@acadvm1.UOttawa.CA