> It's freeware

No, it's open source. Freeware is something very different, and more 
restrictive.

> 2. Use Virtual Box. It is "z/VM", 

That is, if you've never seen z/VM. It's missing, e.g., XEDIT.

The magic word is KVM, which, of course, can be used by multiple virtual 
machine applications.


--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3

________________________________________
From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of 
R.S. [r.skoru...@bremultibank.com.pl]
Sent: Tuesday, April 14, 2020 9:58 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: How to change the default '.java' extension to '.jav'?

W dniu 12.04.2020 o 03:11, CM Poncelet pisze:
> Yes - I still use DOS and SPF/PC, which are about 20 times faster
> CPU-wise than Windows XP (the last version that still supports DOS
> applications.)

XP is the last version that supports DOS applications?
I think it is matter of 32-bit vs 64-bit version/flavour of Windows.

Simply speaking, 64-bit Windows does not support 16-bit applications,
including Windows apps, like IBM Bookreader 2.03.
Of course it is not good reason to stay with 32-bit Windows on PC
machine with 32GB of RAM.

There are better ways:
1. Use DOSbox. It's freeware, intended to run old games, but other apps
are supported as well.
2. Use Virtual Box. It is "z/VM", which can host older systems including
old Windows versions and DOS itself. It's also free.

I would vote for Virtual Box, since you can have many virtual machines,
clones (just for quick and potentially dangerous tests) and you can have
"full-sized" Windows environment like Win XP with older Office and other
stuff.
And you can have OS/2 as a guest.
And your OS need not to be Windows, it can be Linux.

(of course licenses are needed for the stuff above)

--
Radoslaw Skorupka
Lodz, Poland





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