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NeXTcube boot problem

 
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scarecrow



Joined: 19 Jan 2006
Posts: 23
Location: Helsinki, Finland

PostPosted: Tue Dec 20, 2016 12:11 pm    Post subject: NeXTcube boot problem Reply with quote

After reinstall of NS 3.3 on cube on second boot I get this. Any ideas?

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barcher174



Joined: 07 Dec 2012
Posts: 560

PostPosted: Tue Dec 20, 2016 7:49 pm    Post subject: Reply with quote

Do you have a CDROM attached? If so, try removing it or any other external SCSI devices if attached.
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scarecrow



Joined: 19 Jan 2006
Posts: 23
Location: Helsinki, Finland

PostPosted: Wed Dec 21, 2016 7:23 am    Post subject: Reply with quote

No external scsi attached. Disconnected internal (Apple) cd too but same problem continues. Cube boots fine with install floppy and installs fine to hdd. then after second boot this happens every time. also boots fine with "bfd -s" could this happen because of empty pram battery or faulty capacitors?
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bobo68



Joined: 03 Jun 2015
Posts: 194
Location: Germany

PostPosted: Wed Dec 21, 2016 9:47 am    Post subject: Reply with quote

Do you really have a NeXTCube (68040 CPU) or an older "NeXT Computer" cube (68030)?
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scarecrow



Joined: 19 Jan 2006
Posts: 23
Location: Helsinki, Finland

PostPosted: Wed Dec 21, 2016 10:02 am    Post subject: Reply with quote

NeXTcube Model No: N1000A Part No:2115
68040@25MHz
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bobo68



Joined: 03 Jun 2015
Posts: 194
Location: Germany

PostPosted: Wed Dec 21, 2016 10:44 am    Post subject: Reply with quote

Ok. Unless somebody has seen this pattern we can only try to understand the problem bottom up / analyze what we see. Or you rip out the SCSI HD and try a different one. Smile This drive did work before you reinstalled NS 3.3? Have you activated the SCSI boot tests? Is this a 16-bit SCSI drive with some adapter?

Looking at what we see:
"sc: MESSAGE REJECT RECEIVED" comes from the SCSI bus. There is another thread here about the SCSI2SD in which people describe this symptom.

After "root on sd0" you would normally see the time & date and then how the filesystems are mounted.

A trap is the 68k way to have an exception from normal program flow. I could not find out what "trap 0x10" (16) is in the NeXT world. 16 is strange, real traps are normally numbered from 0 - 15 but who know how they used the word trap here. It might give a hint. Or we are already in some memory area with random bits and bytes and it just happens to be a trap 16.

No matter what, after the trap there is a illegal instruction which means there is binary garbage.

Not very helpful, sorry.
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barcher174



Joined: 07 Dec 2012
Posts: 560

PostPosted: Wed Dec 21, 2016 9:08 pm    Post subject: Reply with quote

I suspect that the "sc: MESSAGE REJECT RECEIVED" errors went away after removing the Apple CDROM. Is that correct? What model of hard drive are you using? Capacitors can never be ruled out in situations like these. I would also try another SCSI cable if available. In the file archive you will find the next hardware diagnostics. They are potentially very useful for situations like these. Particularly for testing the memory, which also is a potential source of the problem.
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