>From: [EMAIL PROTECTED] >Date: Sat, 28 Dec 2002 10:25:19 EST > >In a message dated 12/28/02 6:57:00 AM, [EMAIL PROTECTED] writes: > ><< >... I'm not sure what the "XC" or "B" means yet, still learning. >> > >RC is the package type: ceramic, pin-through hole, in this case. > >B is the "step", the particular revision of the masks used to make the chip. > >"XC" should read "MC", meaning Motorola, not "XC", and the "LC" will be >absent on a full function chip.
Motorola often substitutes an 'X' for the 'M' in early runs of their chips. I forget the exact explanation of the meaning, but it's something like, this was an experimental run, and they're good enough to sell, but it's not full final production. It probably affects the price and/or the contract between Motorola and the buyer somehow, but doesn't seem to have much impact on the end user. >Such a full function chip would read: "MC68040RC33B", and this would decode >as follows: You will also find full function 68040s with the part number XC68040RC40 for example. I've also seen quite a few PPC processors from Motorola with XPC instead of MPC. The Umax 233 MHz PPC604e card, e.g., has XPC604E chips on them--at least one batch of them did. Jeff Walther -- Quadlist is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> Quadlist info: <http://lowendmac.com/lists/quadlist.shtml> The FAQ: <http://macfaq.org/> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/quadlist%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
