One other small old timer tip regarding the CP nucleus..
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You will definitely want to create a new Class-G user (I call mine CPCP) for running a 2nd-level CP.. Never load an untested nucleus to your main system. There are some exceptions but, for those, you will want to use some sort of "alternate nucleus" strategy so you can always just re-ipl to get back to a working nucleus.
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You will want to create the following files:
- DMKSYS2 ASSEMBLE - 2nd-level CP config (make? SURE your SYSRES address & volser do not match anything in the 1st-level system)
- DMKRIO2 ASSEMBLE - 2nd-level I/O config
- DMKSNT2 ASSEMBLE - (optional) 2nd-level shared segments, etc
Then make a copy CPLOAD EXEC. I call mine CPLOAD2 EXEC. You should edit this to use the 2nd-level files. (e.g. c/DMKSYS/DMKSYS2/* * same for RIO & SNT)
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Then you create the 2nd-level nucleus load deck with:
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SP PUN CPCP CL N
VMFLOAD CPLOAD2 DMKLCL
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then from CPCP:
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SP RDR CL N
SP PRT * CL M
IPL 00C CLEAR
. . .
SP PRT CLOSE NA CPCPNUC LOADMAP
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cheers, WIlliam
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