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- From: trest@visicom.com (Mike Trest)
- Newsgroups: comp.os.vxworks
- Subject: re: 16 Port I/O board
- Message-ID: <9211201611.AA11539@linda.VisiCom.COM>
- Date: 20 Nov 92 16:11:14 GMT
- Sender: vxwexplo@lbl.gov
- Organization: Lawrence Berkeley Laboratory, Berkeley CA
- Lines: 34
- NNTP-Posting-Host: 128.3.112.16
- Originator: daemon@vxw.ee.lbl.gov
-
- > Mike Anderson:
- > Does anyone know of a 16 port SYNCHRONOUS I/O board (RS-232 or
- > RS-422) with VxWorks driver support (O.K., I'm getting lazy 'cause
- > I'd rather buy it than write it ;-). It would be nice if it could
- > handle 256KB/s and be wonderful if it could go up to T1 or CEPT speeds
- > (not on all 16 ports, of course). I suspect that an intelligent board
- > would be the best bet especially if it knew about the VxWorks backplane
- > network.
-
- Mike, the Performance Technologies Incorporated PTI-330A is what
- we use for this application. We shave used several hundred of
- their 8 port versions with synchronous and asynchronous protocol
- stacks simultaneously. We write our own protocol code (mostly
- MIL stuff) and download it to the PTI at runtime.
-
- I have not, personally, used it at T-1 rates but another company
- here in San Diego has used it for years for a single T-1 line.
- I am quite comfortable that the PTI-330A would handle the 256KB
- with no problem so long as the total bandwidth from all ports
- is within the documented limits:
-
- "... 125Kbits/Second Fun Duplex Bandwidth On All
- 16 Ports Or Correspondingly Higher Bandwidth On
- Fewer Ports ..."
-
- ..mike
-
-
- ====================================================
- Mike Trest trest@visicom.com
- Senior Engineer Voice: 619 457 2111
- Technology Group Fax: 619 457 0888
- VisiCom Laboratories San Diego, CA
- ====================================================
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