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Forums > C64 Coding > Holy Grails
2018-03-18 10:10
Krill

Registered: Apr 2002
Posts: 2982
Holy Grails

I've been wondering about them, with some having been finally discovered, others not yet, and some probably going to remain in the realm of the impossible forever.

I'm speaking of things like:
- 320x200x16 graphics without restrictions
- Crash-free all-direction hardware scrolling
- Digi replay of 8-bit samples at one register write per sample and without requiring cycle accuracy

on standard vanilla hardware, of course.

Some examples of discovered grails are:
- Cube rotating at 50 fps about 3 axes
- The 9th sprite (with some restrictions)
- On-the-fly standard GCR block read+decode+checksumming

As for definition, they all satisfy some measure of being perfect or optimal or being possible after all, with no further improvements required, possible or necessary. But i'm not so sure if that definition holds water with regard to some of the examples i listed. :D

The question is, what other Holy Grails are there, already discovered or still elusive?
What are your pet grails you've been chasing after for decades or have found eventually? :)
 
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2018-03-25 21:37
Mixer

Registered: Apr 2008
Posts: 455
One holy grail would be a tool, perhaps a compiler, that can interleave assembler code. Basically what interrupt does, but in a source code pre processor that can count cycles and generate interleaved source.
2018-03-25 22:00
Krill

Registered: Apr 2002
Posts: 2982
Quoting Mixer
One holy grail would be a tool, perhaps a compiler, that can interleave assembler code. Basically what interrupt does, but in a source code pre processor that can count cycles and generate interleaved source.
I seem to remember Jackasser talking about something like that. Pretty sure he's used it in some productions of his. And also pretty sure he wasn't the only one. :)
2018-03-25 22:25
Ninja

Registered: Jan 2002
Posts: 411
Quote: Quoting Mixer
One holy grail would be a tool, perhaps a compiler, that can interleave assembler code. Basically what interrupt does, but in a source code pre processor that can count cycles and generate interleaved source.
I seem to remember Jackasser talking about something like that. Pretty sure he's used it in some productions of his. And also pretty sure he wasn't the only one. :)


S:T Lars Meeting III - Invite

Source included. Not a generic compiler, though, but still...
2018-03-25 22:47
JackAsser

Registered: Jun 2002
Posts: 2014
Quote: S:T Lars Meeting III - Invite

Source included. Not a generic compiler, though, but still...


Thanks for mentioning. This one interleaves two streams of assembly; one with timimg constraints. It track register usage on both streams and interleaves them while keeping the timing constraints. I.e. a speedcode/rastercode source multiplexer.
2018-03-25 23:11
Oswald

Registered: Apr 2002
Posts: 5095
Jacky, thats crazy, didnt know about that one. I often dreamed about this too, and its done since a decade ? :)
2018-03-26 09:06
JackAsser

Registered: Jun 2002
Posts: 2014
Quote: Jacky, thats crazy, didnt know about that one. I often dreamed about this too, and its done since a decade ? :)

Sorry.. ;)
2018-03-26 09:18
Mixer

Registered: Apr 2008
Posts: 455
Quote: Thanks for mentioning. This one interleaves two streams of assembly; one with timimg constraints. It track register usage on both streams and interleaves them while keeping the timing constraints. I.e. a speedcode/rastercode source multiplexer.

Excellent. 16khz synthesized sounds incoming.....
2018-03-26 10:08
Bubis
Account closed

Registered: Oct 2012
Posts: 10
I would add "free-rotating tunnel" to the list. :)
2018-03-26 11:12
JackAsser

Registered: Jun 2002
Posts: 2014
Quote: I would add "free-rotating tunnel" to the list. :)

Yeah! FD-tunnel. I think Oswalds 8x8 attempt is the closest so far
2018-03-26 12:39
Oswald

Registered: Apr 2002
Posts: 5095
Quote: Yeah! FD-tunnel. I think Oswalds 8x8 attempt is the closest so far

that's by Bubis, and in 4x4 :)
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