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Hi, I'm Iljitsch van Beijnum. These are posts about retrocomputing and other old stuff.

Even more BASIC: PC-BASIC on the Mac

After my BASICODE adventures a few days ago, I really wanted to see if I could run a BASICODE game on my VT420 terminal.

Full article / permalink - posted 2020-07-06

BASICODE: software distribution by radio broadcast in the 1980s

In 2009, I started an effort to digitize all my cassette tapes. As my last computer that still has a line in port is facing retirement, I decided to finally finish that project. Perhaps more about this later. Turns out some of these old cassettes have weird things on them, including radio broadcasts that contain computer programs.

Full article / permalink - posted 2020-07-04 - 🇳🇱 Nederlandse versie

The beautiful simplicity of the serial port

Today, I got a new USB-to-serial adapter. When trying to figure out how to connect a DEC VT420 terminal to a Mac, I learned that as of version 10.9, MacOS has a built-in driver for the FTDI USB-to-serial chip. So I ordered a "USB-console cable" from Amazon. This is a cable that looks a lot like a Cisco console cable but with a USB connector at one end. As the name suggests, you can connect it directly to the console port of a Cisco router. And with the right RJ-45-to-DB-25 / DB-9 adapters, you can connect it to anything with a serial port.

Read the article - posted 2020-02-02

I love my new Casio F-91W watch!

The Casio F-91W is a great watch. It's cheap (I paid 15 euros) and simple. It weighs 22 grams. The best thing? The battery life is seven years. Casio started making them in 1991, and they're still selling in good numbers, according to this somewhat incredulous story over at the BBC.

I do have to admit one of the reasons I got the F91W is to see if I could get used to wearing a watch again in anticipation of the Apple Watch.

Permalink - posted 2014-09-11

Nikon FE and/or AI lenses: manual focus in the digital era

Last week, I wrote a review of the Nikon F65 camera. Although the F65 is more than a decade old, it supports most of the photographic automation that we're used to with our digital cameras. The F65 left me wanting to go even further back in time, so this week I'm going to explore manual focus photography with a Nikon FE SLR and Nikon AI and AIS lenses on my current Nikon D7100 digital camera.


Nikon FE with 50 mm AI lens and D7100 with 105 mm AIS lens

Full article / permalink - posted 2014-06-24

Understanding old Nikon lenses: AI, AI-S, AF and AF-S

If you have any interest at all in using older Nikon lenses, you probably have some understanding of the difference between non-AI, AI, AI-S, AF and AF-S lenses. The trouble is that places on the web that explain the differences easily get lost in the details. This article is intended to serve as a slightly easier to digest version of the story.

Read the article - posted 2014-05-08

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