kirchner@informatik.uni-kl.de (Reinhard Kirchner) (01/04/91)
Hello, just for curiosity: Yesterday I installed my new Future Domain TMC-860, which is advertized and I bougth it for this, as a 16-bit hostadapter. Looking at the bus contacts I wondered: Nearly no pads on the AT slot ! Looking nearer: The AT part of the slot is used only for additional interrupt lines ( 10,11,12,13,14 ), but NOT for the databus. So this is really a 8 bit adapter like the earlier ones. It may be faster than those for other reasons, but definitly not because of bus width. BTW another strange topic on these adapters: They do not use a IO port address, and they do not have a shared memory. ( So says the manual ) So how does the processor access it ? There is only some ROM for BIOS on it, which has its address range. Reinhard Kirchner Univ. Kaiserslautern, Germany kirchner@uklirb.informatik.uni-kl.de
larry@nstar.rn.com (Larry Snyder) (01/05/91)
kirchner@informatik.uni-kl.de (Reinhard Kirchner) writes: >Looking nearer: The AT part of the slot is used only for additional >interrupt lines ( 10,11,12,13,14 ), but NOT for the databus. So this >is really a 8 bit adapter like the earlier ones. It may be faster than those >for other reasons, but definitly not because of bus width. yep - we found the same thing out - and called FD and at the time (last summer) were told that FD didn't make a card which did 16 bit data transfers. We used the board under Novell 2.15 until it died 9 months later - then replaced it with an Adaptec 1542B - which does do 16 bit data transfers. We should have bought the 1542B to start with - -- Larry Snyder, NSTAR Public Access Unix 219-289-0282 (HST/PEP/V.32/v.42bis) regional UUCP mapping coordinator {larry@nstar.rn.com, ..!uunet!nstar!larry, larry%nstar@iuvax.cs.indiana.edu}