Where is the Twilight Zone music when you need it?

The first URL describes hardware features needed for OS/390 2.10 and
says they will be available in Sept 2000.  We bought our 2003-106 no
later than summer of 98 and it has been running 2.10 for several years
now.  Did IBM really beat the target data by more than 2 years? 

-----Original Message-----
From: Edward Jaffe [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, July 26, 2006 9:04 AM
To: [email protected]
Subject: Re: OS/390 2.10 architecture level set 1 (and beyond)?

Jeffrey D. Smith wrote:
> Is architecture level set (ALS) 1 required for OS/390 2.10?
>
> What machine instructions are required for architecture level set 1, 
> as oppposed to ALS 0?  I seem to recall that Perform Locked Operation 
> (PLO) is ALS 1. What are the others?
>   

http://www.ibm.com/servers/s390/os390/plug.html

> Is there a set of CVT flags for the ALS, or maybe there are bits for 
> individual instructions?
>   

CVTH7703 implies ALS 1 is present.

> Also, is ALS 2 the 64-bit architecture?
>   

No. http://www.ibm.com/servers/s390/os390/plug1.html

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