Path: chuka.playstation.co.uk!scea!peter_alau@playstation.sony.com From: Tim O'Neil Newsgroups: scee.yaroze.freetalk.english Subject: Re: MIPS instruction are they all supported? Date: Thu, 07 May 1998 23:28:57 -0400 Organization: @Home Network Member Lines: 22 Message-ID: <35527BF9.1FD737FC@home.com> References: <6iinnn$jpr14@chuka.playstation.co.uk> NNTP-Posting-Host: cr785161-a.rchrd1.on.wave.home.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 4.02 [en]C-AtHome0402 (Win95; U) West wrote: > > Having got a copy of all the mips instructions I was wondering does the > playstation support them all( except fpu ones obviously). I ask because the > user guide says the R3000 in the playstation is a customized one. I have been using 'The mips programmers handbook' ... not sure of the publisher et al, but I have found that the book describes a number of instructions that cannot be used... ie. addi (it says just use add and addi will be substituted by the compiler). Using Codewarrior, I have found that about 75% of the instructions do not get substituted, but have to be actually written... eg. the compiler complains when I try to do somehting like add t9, t9, 7 but works perfectly well with addi t9, t9, 7 Aside from that little quirkiness, I have not found any unsupported asm instructions (save for the float operations which I have not even attempted to use)