darin@tmq.UUCP (Darin Adler) (04/23/85)
> ... I assume that Apple will handle the ROM upgrade that was as well > because it really reduces the chances of error and infant mortality. The > ROM's, I believe, are soldered in place, and I suspect few service centers > want to be more than boardswappers if they can help it. It is faster, more > reliable, and cheaper that way. The ROMs are socketed. Enough said. Darin Adler ihnp4!tmq!darin
bentley@aicchi.UUCP (Bentley) (04/24/85)
According to an Apple source here in Chicago, Apple will upgrade the ROMS (dubious though it may seem) via board swaps, regardless of the fact that the roms are socketed. Therefore, if a Mac has been modified (that is, if the mother board has been changed), you not only blew the warrantee, you blew the upgrade path as well. The Hyperdrive people are rumored to be building up some kind of rom upgrade path of their own, since installing a Hyperdrive involves changing a power supply as well as inserting fan and drive, a concept that has bothered Apple in the past. They added a power supply that is beefier than the standard Mac power supply because the standard one can only handle the requirements at hand; the addition of more memory chips, for example, may indeed cause the existing Mac power supply to short and provide an astounding amount of current to all the components of the Mac; a movie was once made about the subject of meltdowns...I am referring to, incidentally, of Macs larger than 512K. A two meg Mac has melted, I've heard from indirect sources, and a 1 meg Mac may do the same. *BEWARE*!! The reason for the boardswap rom upgrade? ROMS have been known to fail in circuit, and Apple wants to test them. mike bentley (ihnp4!aicchi!bentley)