home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!portal!cup.portal.com!Bob_BobR_Retelle
- From: Bob_BobR_Retelle@cup.portal.com
- Newsgroups: comp.sys.atari.st.tech
- Subject: Re: TT VME Interrupt help needed!
- Message-ID: <73241@cup.portal.com>
- Date: Sat, 9 Jan 93 01:40:13 PST
- Organization: The Portal System (TM)
- References: <1313@mwuk.UUCP>
- Lines: 22
-
- Tony Mountifield asked about the VME implementation on the TT.
-
- You've just discovered the joys of dealing with non-standard
- implementations of "standards".
-
- The "AVME" slot on the TT is only a partial implementation of
- the VME standard, similar to the way the "ACSI" port was a
- crippled SCSI implementation.
-
- The Atari implementation of the AVME port does *not* have any
- provisions for bus-mastering, which it sounds like the Ethernet
- card assumes is available.
-
- The only useful cards for the TT are passive devices like
- graphics cards, which do not need to take control of the bus.
-
- This leaves out a very large percentage of the "hundreds and
- hundreds of VME cards" we often hear about...
-
- As Alan Pratt said, "maybe next time"...
-
- BobR
-