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IBM developerWorks: The new Amiga: VP assembly code demo

Nov 11, 2000, 15:09 (2 Talkback[s])
(Other stories by Daniel Robbins)

[ Thanks to Shailendra for this link. ]

"...an in-depth introduction to the Amiga's revolutionary VP (virtual processor) assembly code, the heart of the new Amiga's Digital Environment. By the end of the article you'll have a good understanding of how VP works, not to mention how darn cool it is!"

"VP code is, in a nutshell, the ideal assemble language. In fact, it's such an improvement over traditional non-virtual assembly language that it needs to be seen and understood in order to be appreciated. Just to highlight a few of its strong points: it has an unlimited number of integer and floating-point registers; you can use high-level looping constructs (similar to those in a higher-level language like C), rather than using arcane "jnz" instructions; and it supports register naming and object-based assembly language programming! As you can see, VP is not your average assembly language."

"The demo application that we're going to look at is extremely simple. Our sample app opens a transparent window and creates an interesting alpha-blended shadowy effect (and once you've thrown a few next-gen Amiga boing balls onto the desktop, it looks really cool). Here's a screenshot of the "dblend" program running on my Amiga development system. Thanks to the boing balls, you can see that this truly is a groovy-looking transparent window..."

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