1973 School
Within my last years in ground school (1973-1983) I attended extra education learning to program computers.We learned simple programming in COMAL-80, and a few simple games were available to play.
At that time home computers were expensive and very little in use for other things than games.
1984 Computer School
It was first a couple of years later I got into computer school.Educated in Denmark on computer school (1984-1986), I learned to program on a UNIVAC 1100/60 mainframe
Mainframe coding was line based, and not possible to write documentaion.
I remember we could use these additional machines:
- A red ICL COMET computer
- Regnecentralen Piccoline computer
More info... - Regnecentralen Partner computer
More info... - Apple Macintosh
At that time the first computer where you could create diagrams.
More info...
1986 Working...
- 1986 Hafnia Hånd i Hånd insurance
- 1990 SAS (Scandinavian Airlines System data)
- 2004 CSC (Computer Sciences Corporation)
- 2012 Nets
Leisure time
- 198x, Commodore SX64
- By end of the 80s I bought a used Commodore SX64.
A heavy portable computer compared to what we have today.
It was used primary for gaming.
Quite amazing how many good games this machine could handle, in only 64 KB (65536 bytes) RAM.
Programming was not well supported on this.
A few links to old stuff:
Computerbrains Headquarter
C64 Homepage
FTP, Arnold - 1983, OS/2
- I got my first real computer, a notebook, in 1993, 120 MB disk, 16 MB ram.
For operating system you could at that time select DOS, Windows 3.1 or OS/2.
OS/2 Warp came with Internet access supported, I had an @ibm.net e-mail address for some years.
OS/2 had real multi tasking, which Windows not had at that time.
With the builtin 2400 baud modem I learned to dial up and use BBS systems (Bulletin board systems). - 2001, Windows
- In 2001 I bought my first real stationary computer, after several notebooks.
It came with Windows ME included.
Later this was replaced with Windows XP.
This was used, in multi boot setup with Linux, until Microsoft dropped support in 2009.
Now I only use Linux.
Looking back I used a lot of time taking care of updates.
All internal software updated by Microsoft, but all addon software had to be checked from time to time, this work better with Linux.
I do not like Windows way of doing things.
As long everything work fine no problem, but in case of a problem it can be very difficult to find reason, as many things are hidden for the user. - 1998, Linux
- As I remember my first distribution was Red Hat.
On a tour to Bangkok in Thailand, I bought a CD and book with Red Hat.
From 1998 and forward in dual boat setup with Windows.
This worked fine until I got tired of the half year Red Hat updates by CD, then I found Debian to be better by rolling updates.
Today I use Debian Linux on both server and desktop.
I have been running a server on Internet since 2001, always non graphical server.Web archive oldest version 2001
Web archive oldest version with domain 2004
Documentation tips
- SCRIPT
- I started working with IBM mainframe computers in 1986.
At that time PC (personal computers) were not used in offices.
So how did we then document and describe things.
On IBM mainframe computers we had SCRIPT to handle typesetting by markup language.
You wrote text, and controlled layout and formatting by DCF and GML tags, we can compare GML with HTML today.
SCRIPT would then translate your text into quite good looking output, output could be a line printer or a laser printer. - Word
- During the 90s the personal computer came into offices.
And with this came Microsoft Word, with WYSIWYG "What You See Is What You Get".
Suddenly you could write text, change formatting and layout, and see final layout on screen, and print the same on laser printer.
Easy to handle for everyone.
Only problem with WYSIWYG is that a small mistake can destroy overall layout of a large document. - LaTeX
- In 1991 Linux is created, and some years later it begin to find a place on the personal computer, making it possible for everybody to use UNIX alike applications.
Within the applications supported by Linux we find LaTeX.
LaTeX is a markup language used for typesetting, same way as SCRIPT.
Using control tags you write your text, and let LaTeX translate it into PDF or HTML as output.
Today I prefer to use LaTeX to write large documents/handbooks, as it secure same layout, and a very professional layout.
IBM mainframe info
- ?
- Assembler
- Blog
- Conferences
- SHARE
GSE
GSE Nordic - IBM
- IBM
IBM Research
IBM Redbooks - ISPF
- Tips and tricks
- Linux
- Linux on the IBM ESA/390 Mainframe Architecture
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LinuxOne - Newsgroups
- Archives
Archives of ibm-main - FTP
- ftp.software.ibm.com
service.boulder.ibm.com
testcase.boulder.ibm.com
service2.boulder.ibm.com
ftp.pc.ibm.com - Unsorted links
- Mainframe Programmers Resource Page
VM Download Library Packages
CBTTAPE
Michel Castelein
OS/390 and z/OS Freeware by Lionel B. Dyck
GSF Page on the Web
Mainframe, Midrange, & Micro Computers
Mainframe tips
Virtual x86
Zowe cmds - Logos
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