Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!radius!news From: johnL@radius.com (John Lee) Newsgroups: comp.sys.mac.hardware Subject: Re: Radius Rocket & Sys 7 question Keywords: Radius, Rocket, System 7, 32-bit clean, Mac-II, MCL, Lisp Message-ID: <1481@radius.com> Date: 27 Jun 91 22:30:42 GMT References: <343@hsvaic.boeing.com> Sender: news@radius.com Reply-To: johnL@radius.com (John Lee) Followup-To: Radius Rocket & Sys 7 question Organization: Radius Inc. Lines: 41 george@hsvaic.boeing.com (George Williams) Subject: Radius Rocket & Sys 7 question > I have a Mac-II (vintage), and am considering adding a Radius Rocket > 68040 board. Questions: > Will I be able to run 32-bit virtual memory under system 7? > Will I need/be able to use the Connectix MODE32 solution? > Is the Rocket compatible with MCL 2.0 (Mac Common Lisp)? George, I have some good news and some bad news. First, the Rocket is not compatible with Rev A Mac ][ ROMs. This is due to a well-known bug in the Apple ROM which was corrected in January 1980 on the Rev B ROM set. The bug doesn't allow access to addresses above 1MB per NuBus slot. Next, Macs of the ][cx variety and older inherently are not able to go into 32- bit addressing mode and are stuck with 24-bit addressing. Rocket does not change this fact as it uses the code in the motherboard's ROMs. Next, while it is theoretically possible for MODE32 to work with Rocket, there is no announcement of such development being done. However, I wouldn't be surprised if this actually were to come about in the not-too-distant future. Finally, Radius has no report of Rocket and MCL bugs. I guess I'll leave this one open to the community at large to correct me if such nasties actually occur. As an aside, AbSoft told me yesterday that their FORTRAN package works wonderfully on the Rocket! John Lee Radius Developer Services "Most opinions are mine, none are my employer's, and the facts belong to their respective owners!" Internet: johnL@radius.com AppleLink: RADIUS.QA (ATTN: RDS)