--- Max Eskin <max82(a)surfree.com> wrote: If this is on the list, then you should also have BI bus (32-bit bus used as the processor bus in 8200/8300 "Scorpio" class VAXen), Q-bus (16-bit bus going back to the early 1970's), Nautilus bus (32-bit system bus for VAX 85xx and 87/88xx machines) and XMI (eXtended Memory Interconnect) bus, the primary path on 6xxx/7xxx VAXen. The Netronics Elf-II bus COSMAC VIP (1802) expansion slot? VME (68K and old, large SPARC servers used this) Multibus (favored of Intel, found in older Cisco products and the NCR Tower) Microchannel Zorro II/III (16/32-bit Bus used in Amigas) OMNIBUS (PDP-8/e/f/m/a - lots of batches of 12-bit signals) C-64 expansion bus \ VIC-20 expansion bus - 6502 signals and memory decode stuff, like the Apple ][ PET expansion bus / I guess it just depends on how you are using the term "local bus". If you mean direct access to processor signals, these should all count. Some of these appear as a local bus in some machines (BI bus in the 8200, etc.), and a peripheral bus in others (BI bus in 85xx/87xx/88xx/6xxx...) Same goes for the UNIBUS (main bus in older PDP-11's (11/20, 11/05...) but one of several busses in later models (11/70, 11/84, etc.) -ethan _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com