RE: OS/400 on mambo emulator -- MIDRANGE-L

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Can you pls clarify what you mean by the "IBM i-specific hardware"?
As per my understanding, a nowadays IBM i is running on exactly the same hardware as AIX or Linux called IBM Power Systems.

Cheers,
Vlad.

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxxxxxxxx] On Behalf Of Yvan Janssens
Sent: Friday, May 29, 2020 1:17 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: OS/400 on mambo emulator

IBM i (as in, the current versions) always need PowerVM; even if you run it 'natively' on the hardware, the Power Hypervisor will always run in LPAR 0, and IBM i will run in LPAR 1, with LPAR 1 having allocated all available resources.

Older OS/400 versions did run 'natively' on hardware without PowerVM, but this hardware was rather custom. On those machines, the service processor brings up the OS and acts as a bootloader. When debugging SCSI issues and doing a trace, you can clearly see the boundary there. This is very similar to the CISC (pre-PowerPC-AS versions).

Emulation is currently just not possible; there's no way to bootstrap IBM i, there's no support for IBM i-specific hardware in emulators either. If you want to learn how to use IBM i, get a USRPRF on pub400.com, or get yourself a developer LPAR somewhere.

/y

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