Anders Hesselbom

Category: Geeky

Basic data management
2010-06-09

If you want to do this on a real Commodore 128, you will need a blank floppy disk, and if you are doing this from an emulator, you will need a blank floppy image. I have created a blank d64 image from the Vice emulator. To do that, click File, Attach [...]

The oddities: GO64 and sound
2010-05-29

GO64 In some ways, GO64 behaves as a command (GO) with one argument (64). For example, you can type GO64, GO 64 or even GO 70-6 and all will set the C128 in C64 mode. But in some ways, GO64 behaves as a command on its own. For example, from the fact [...]

The sprite engine
2010-05-29

One of the built in applications in the C128 is the sprite editor. Enter it by typing SPRDEF. Choose a sprite number, use the cursor keys to move the cursor and numeric keys to draw. 1 will delete a pixel, 2 will draw with the first color. In multico [...]

Manipulate a byte
2010-05-28

When you get a tweet like this thrown at you, the only thing to do is to take another visit to the wonderful world of the C128 monitor. Let's say that we were to make a program using assembler. We will store it at address 4096. Enter the machine code [...]

The built-in machine code monitor
2010-05-27

The Commodore 128 features a few built in applications and one Easter egg. The egg is a list of the engineers that built the machine, with the word "hardware" intentionally misspelled as "herdware" after 8-bit computer designer Bil Herd. To reveal th [...]

Hidden stuff in the C128
2010-05-25

Here is some of the hidden stuff in my favorite computer, the Commodore 128. There is a bug in the Basic interpretation that shows up when you tries to do an arithmetic calculation using a string. This is what's supposed to happen: When you add [...]