manning@mmm.UUCP (Arthur T. Manning) (02/04/89)
I finally got Mizar's 8210 RAM board to at least allow the system to boot with Os9 2.2 after replacing the rb7400 module. Now the system starts getting CRC errors (232) when I start using the extra memory! This does not happen when the ethernet software is not running, so I would suspect it has some problem with the 8210. Mizar's answer: "we don't support the ethernet software" Solution: don't buy Mizar if you intend to use ethernet - (Os9 Unibridge) -- Arthur T. Manning Phone: 612-733-4401 3M Center 518-1 FAX: 612-736-3122 St. Paul MN 55144-1000 U.S.A. Email: manning@mmm.uucp
kim@mcrware.UUCP (Kim Kempf) (02/06/89)
In article <1233@mmm.UUCP> manning@mmm.UUCP (Arthur T. Manning) writes: >I finally got Mizar's 8210 RAM board to at least allow the system to boot >with Os9 2.2 after replacing the rb7400 module. Now the system starts >getting CRC errors (232) when I start using the extra memory! This does >not happen when the ethernet software is not running, so I would suspect >it has some problem with the 8210. > There are a number of likely causes of this problem: - Multiple boards responding to the same address. The *entire* address range of the memory the new board is providing must not overlap anything else. Otherwise just this sort of problem will occur as both the RAM and something respond causing sporadic operation and random data values. - One should get from the mfgr. of the hardware the local and VMEbus maps of the hardware supplied so valid spare address ranges can be identified. - Custom user-written drivers are always suspect. Microware has tested this exact configuration in house and we have a number of other customers who have no problems with Unibridge on off the shelf Mizar configurations.
manning@mmm.UUCP (Arthur T. Manning) (02/06/89)
In article <948@mcrware.UUCP> kim@mcrware.UUCP (Kim Kempf) writes: >In article <1233@mmm.UUCP> manning@mmm.UUCP (Arthur T. Manning) writes: >>I finally got Mizar's 8210 RAM board to at least allow the system to boot >>with Os9 2.2 after replacing the rb7400 module. Now the system starts >>getting CRC errors (232) when I start using the extra memory! This does >>not happen when the ethernet software is not running, so I would suspect >>it has some problem with the 8210. >> >There are a number of likely causes of this problem: > > - Multiple boards responding to the same address. The *entire* address I would expect something like this to happen all the time; not just when trying to run Unibridge. > - Custom user-written drivers are always suspect. Do the Ethernet support package ftp and telnet daemons also qualify as suspect custom drivers? As of now, I certainly don't trust them since they don't have a long track record. > >Microware has tested this exact configuration in house and we have a number >of other customers who have no problems with Unibridge on off the shelf >Mizar configurations. I doubt that. How do I know that I have the same combination of modules in my system? The rb7400 module had to be updated from ident 4 to ident 11, even though my system was supposed to have been version "2.2". In any case, since Mizar is not supporting Unibridge, I wouldn't recommend using their hardware if there was the remote possibility that I might want Unibridge in the future. -- Arthur T. Manning Phone: 612-733-4401 3M Center 518-1 FAX: 612-736-3122 St. Paul MN 55144-1000 U.S.A. Email: manning@mmm.uucp