🚀 go-pugleaf

In article <1992Dec28.135504.22809@athena.mit.edu>, robert@amo.mit.edu (Robert Lutwak) writes:
> In article <1992Dec27.215249.22018@mnemosyne.cs.du.edu> epwong@nyx.cs.du.edu  
> (Elliott Wong) writes:
> > 
> > 	The RT takes ISA cards right? Would I be able to use the RT's
> > cards in other ISA machines? (eg. 80286?)
> 
> The bus is the same.  Unfortunately, IBM never supported any of
> the standard AT boards on it (at least not in AIX). 

Not exactly true, the following boards ARE supported in a RT running AIX:

  - AT Hard disk and floppy cotroller  (original 40 MB one).
     The R-40 Hard disk is the identical drive in the original AT 40 MB.
  - PC Monochrome adapter and display (IBM 5151). 
  - PC EGA adapter and display (IBM 5154).
  - AT Serial-Parallel adapter
  - PC Network adapter, original IBM PC LAN card broadband RF.
  - Ethernet adapter, Ungerman Bass made the ethernet boards for the
      RT, and these same cards do run in AT style machines.
  - AT 512KB Memory expansion card - but only in support for the
      AIX AT CO-processor card.
  - A few third party AT boards were supported by several vendors
    for a while. :-(

> Similarly, there is little software support on AT-class machines for the
> RT boards.

True.  Only those boards originaly designed for AT or PC style machines
were interchangable immediately.  Others MAY work, depending on the
design of the cards, and memory and I/O address conflicts. They of course
will need drivers and support code to be written.

> One data point though, I use IBM 6157 Streaming Tape Drive and
> controller from our RT on an AT, using the Sytron backup software,
> without a hitch.

Yep.  We originally used Sytos to exchange tapes between the RT and  
our PC's.

Later,
markw
-- 
M. Whetzel 
Home: markw@antimatr.hou.tx.us        | IBM RT/125 running AIX 2.2.1 
UUCP ..!uhnix1!lobster!antimatr!markw