Tag: C64

Två nya SID-låtar

Jag har slängt ihop två nya SID-låtar som kan avnjutas på din Commodore 64. Den ena (the_roger_boogie.sid) är ett resultat från ett demo-jam på jobbet tillsammans med Klas Dahlén, Roger Johansson och Erik Sandberg. Den är egenkomponerad och använder en samtida playerrutin (SID 8580). Förhandsgranskning finns på YouTube. Den andra, som är en cover på […]

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Plotting graphics

The Commodore 128 has a nice API for setting graphics mode and plotting graphics, that can be used in 40 column mode. The GRAPHIC command takes a mode (0 to 5) and a “clear screen flag”, and changes the current graphics mode. 0 is the 40 column text mode and 1 is the high resolution […]

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Let’s make the screen flash!

This program will make the screen flash on the Commodore 128, and it will also run on the Commodore 64. The background color of the screen is stored at D021 (53281), so this effect is accomplished by manipulating the value at that address, multiple times. This program cannot be written in Basic, because the Basic […]

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Sprites on the Commodore 64

Things gets a bit tougher on the Commodore 64, because this excellent piece of hardware did not come with Basic equipped with sprite commands. Nor has it a sprite editor or a machine code monitor. However, if we have access to a Commodore 128, sprites can be edited when in C128 mode, and then used […]

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