Mw.Dsk Emulator Os-9 - How To Install Them

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As a resident disk, the starting system (and a new kernel installation) will use the VMREL6 disk.

In my opinion, the most interesting of the old systems are mainframes and late minicomputers (supermini).

Unlike the early minicomputers, which often stuck on the end-users knee for his needs, mainframe and supermini systems from the very beginning were designed for people who did not have a complete understanding of the computers work or the time to develop a separate architecture for each task.

At the same time, unlike modern systems (4 gigabytes of RAM per set for this post), mainframes and especially supermini were very limited in resources and did not usually grow.

VM 370 is the IBM operating system for IBM System 370 computers.

This is a multi-user OS working on the principle of a control program (CP) hypervisor: each user is provided with their own virtual machine in which they can run their desired OS, in particular the CP hypervisor itself (few modern hypervisors are capable of such a trick) and CMS - a single-user OS, grandmother MS -Dos.

A direct descendant of VM - zVM is still used on IBM System z mainframes.

For those who want not to red-eyed, but just to see the final result: there are ready-made images of the system with detailed instructions (though in English).

Materials and Tools For installation and operation we need: Emulator S 370: Hercules.

Unfortunately, I can not give installation tips for Windows, because I myself use Linux.

Mw.Dsk Emulator Os-9 - How To Install Them

Optional: additional programs, however, I myself have not yet figured out how to install them.

Everything, naturally in English, but for me personally it was only an incentive to learn it.

IBM English is considered an example of literate language.

Training. I put all the project files in the folder home link Programming LEGACY SYSTEMS System360 vm370habr (hereinafter simply vm370habr).

The downloaded images are saved in the vm370habr DISTR folder.

Creating disk images linklink-K73BY ProgrammingLEGACYSYSTEMSSystem360vm370habrDASD dasdinit -z VMREL6 3330-11 VMREL6.

HHCDU044I Creating 3330 volume VMREL6: 808 cyls, 19 trkscyl, 13312 bytestrack.

HHCDU044I Creating 3330 volume CPR6L0: 404 cyls, 19 trkscyl, 13312 bytestrack.

The second disk is CPR6L0, models 3330-11 (twice as large capacity), we will install a hypervisor on it.

Disks are archived (option -z), this option is better not to use on slow computers.

HHCTA004I 0180: DISTRstarter-3330.aws is a AWS Format tape file.

The following appears in the telnet window: VM370 FORMATALLOCATE PROGRAM RELEASE 6.

Disks connected to CP can be of two types: resident CP disks (for system information and paging files) and user disks, which can be divided into several mini-disks on cylinders.

The CMS shell splits all the disk space allocated to it into 800-byte sectors and builds a file system according to the FAT type.

As I understand it, the start system disk (CPR6L0) is a data disk with a special kernel assembly in the first cylinders.

Mw.Dsk Emulator Os-9 -Mac