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- Xref: sparky vmsnet.misc:1116 vmsnet.internals:1728 comp.sys.dec:6825 comp.org.decus:1103
- Path: sparky!uunet!psinntp!cmcl2!rlgsc.com!gezelter
- From: gezelter@rlgsc.com
- Newsgroups: vmsnet.misc,vmsnet.internals,comp.sys.dec,comp.org.decus
- Subject: Re: Need faster async board...dlv11-J? Something else?
- Message-ID: <1993Jan12.001318.313@rlgsc.com>
- Date: 12 Jan 93 00:13:18 EST
- References: <1993Jan11.160754.1011@dragon.com>
- Organization: Robert Gezelter Software Consultant, Flushing, NY
- Lines: 37
-
- In article <1993Jan11.160754.1011@dragon.com>, cts@dragon.com writes:
- > I have various MicroVAX II systems with Telebit worldblazers attached.
- > Currently, these are using DHV11 interfaces, which top out at 19.2 kb.
- > It appears this is the bottleneck; what options exist for getting faster
- > speeds on an MVII, if any?
- >
- > The top speed of the DHV/DHQ/DZQ appears to be 19.2; the only board
- > that's 38.4 capable for the Qbus is the CXY08, and it looks like this
- > board isn't supported on the MVII.
- >
- > Any suggestions? I've considered getting a DLV11-J, and adapting the
- > driver from the decus tape; however, I'd rather have a DMA capable
- > device....
- >
- > Charles Smith
- > cts@dragon.com
- >
- --
- Charles,
-
- As far as the DLV-11J, you will not have much luck. The DLV-11J
- is, for all intents, unbuffered (it only buffers two characters
- if I remember correctly) additionally, you will get an interrupt
- for every character. This will have a hard time at 9.6-19.2 kb,
- much less at higher speeds.
-
- I hope that the above is useful. If I have been unclear, please
- feel free to contact me via email or phone.
-
- - Bob
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