borsom@imokay.dec.com (Doug Borsom) (04/24/89)
In article <10030@netnews.upenn.edu> hodas@eniac.seas.upenn.edu (Josh Hodas) writes: >... >Notes: The motherboard of the II is brand new, having just gotten the > free upgrade to the Revision B ROMS (Which requires a motherboard > swap). >... Can anyone tell me about these upgrades? I have an early model of the MACII, and I haven't heard boo about ROM upgrades, free or otherwise. Tha
du4@mace.cc.purdue.edu (Ted Goldstein) (04/29/89)
In article <443@imokay.dec.com> borsom@imokay.dec.com (Doug Borsom) writes: >In article <10030@netnews.upenn.edu> hodas@eniac.seas.upenn.edu (Josh Hodas) writes: >>Notes: The motherboard of the II is brand new, having just gotten the >> free upgrade to the Revision B ROMS (Which requires a motherboard > >Can anyone tell me about these upgrades? I have an early model of the >MACII, and I haven't heard boo about ROM upgrades, free or otherwise. >Tha I also am interested in finding out about this upgrade. Also, can anyone tell how I can find out which ROM version I currently have in my Mac II. Thanks. Ted Goldstein du4@mace.cc.purdue.edu . . . . .
ra_robert@gsbacd.uchicago.edu (04/29/89)
In article <2318@mace.cc.purdue.edu>, du4@mace.cc.purdue.edu (Ted Goldstein) writes... >In article <443@imokay.dec.com> borsom@imokay.dec.com (Doug Borsom) writes: >>In article <10030@netnews.upenn.edu> hodas@eniac.seas.upenn.edu (Josh Hodas) writes: >>>Notes: The motherboard of the II is brand new, having just gotten the >>> free upgrade to the Revision B ROMS (Which requires a motherboard ^^^^^^^^^^^^^^^^^^^^^^^ Does a ROM upgrade on a Mac II require a motherboard switch??? If so, how much does that cost (currently)? I ask particularly because if System 7.0 and/or System 8.0 require a ROM switch (just a nasty rumor at this point) in addition to a PMMU, I'd of course like to replace the ROM. Also, what _is_ the "Revision B ROM Upgrade"? Robert ------ ra_robert@gsbacd.uchicago.edu ------ generic disclaimer: all my opinions are mine
s160041@castor.ucdavis.edu (Greg DeMichillie) (05/02/89)
In article <2987@tank.uchicago.edu> ra_robert@gsbacd.uchicago.edu writes: > >Does a ROM upgrade on a Mac II require a motherboard switch??? If so, how much >does that cost (currently)? I ask particularly because if System 7.0 and/or >System 8.0 require a ROM switch (just a nasty rumor at this point) in addition >to a PMMU, I'd of course like to replace the ROM. > >Also, what _is_ the "Revision B ROM Upgrade"? > > >Robert >------ >ra_robert@gsbacd.uchicago.edu >------ >generic disclaimer: all my opinions are mine The Revison B fixes a bug in the Slot Manager. In the first Mac IIs that shipped the Slot Manager only ran in 24-bit mode. This limits the amount of memory that can be accessed in a NuBus slot to 1MB. That was a problem since several companies came out with memory boards for A/UX that had 16MB of RAM on them. Apple will provide a replacement mother board free of charge to those users who need the upgrade. This offfer is good for the life of the Mac II. Does a ROM upgrade require a motherboard swap? It depends. As I said before, the bug fix to the Slot Manager required a motherboard swap. But if you want to put an FDHD into your Mac II, the ROMS controlling the disk drive are just replaced. It's worth noting that the newer machines have ROM SIMMs, making any future ROM replacements very simple. And we all know Apple never does anything without a reason, right :-) Greg DeMichillie * Apple Student Rep - UC Davis lgdemichillie@ucdavis.edu * AppleLink : ST0178 Disclaimer: If you've seen one disclaimer, you've seen them all. Greg DeMichillie * Apple Student Rep - UC Davis lgdemichillie@ucdavis.edu * AppleLink : ST0178 Disclaimer: If you've seen one disclaimer, you've seen them all.