Uploaded January 2023 | Updated September 2026, 7 hours ago
Today we will explore copper interrupts, and how to use a sine table in Amiga Bare Metal assembly.
There was a little bug in the video’s code, which I noticed rewatching the video.
The reason why that variable sineOffset didn’t work next to the other variables and caused the bar to behave erratic. Was because it was defined as a byte and should be a word. Moving that variable down, actually made it land in a clean piece of memory.
This bug isn’t present in my github version below.
github.com/rdoetjes/amiga-asm-lesson (copper_lesson3.S)
github.com/rdoetjes/sine_generator
Today we will explore copper interrupts, and how to use a sine table in Amiga Bare Metal assembly.
There was a little bug in the video’s code, which I noticed rewatching the video.
The reason why that variable sineOffset didn’t work next to the other variables and caused the bar to behave erratic. Was because it was defined as a byte and should be a word. Moving that variable down, actually made it land in a clean piece of memory.
This bug isn’t present in my github version below.
github.com/rdoetjes/amiga-asm-lesson (copper_lesson3.S)
github.com/rdoetjes/sine_generator
