On Sun, Apr 10, 2011 at 11:55 PM, Jack <gykazequ...@earthlink.net> wrote: > A "REAL BUS", you say?? If so, then explain to me why, on so > many Intel-based systems, there are so many PCI BRIDGES!! If > it were a "real bus", there would be only ONE bus, NOT so many > "bridges" to yet-another set of wires for God-Knows-What! My > guess is that only adds cost and complexity, which an ordinary > user like me might hope to AVOID!
No, you are wrong. PCI is a real bus and a real bus needs at bridge to decouple the bus frequency from the core frequency. That was the main failure of the VL-"bus" that it was hooked directly to the CPU base-frequency. Horrible poor design. Also PCI introduced the the PCI ID number so we poor souls had a chance to identify the hardware. The ISA days were horrible and should just be forgotten. However I agree that the PC/x86 design is a POS in the first place, but DOS depends 100% on it (and that's why most of us use Linux today). ------------------------------------------------------------------------------ Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
