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Forums > C64 Coding > How does linecrunch work ?
2003-02-17 11:49
Majikeyric

Registered: Sep 2002
Posts: 83
How does linecrunch work ?

Hi everybody !!!!

Can someone explain or point me to a web site where I could find information about linecrunch ???
I think it allows to scroll bitmaps but I don't know how ???

thanks.
 
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2025-01-14 22:06
Oswald

Registered: Apr 2002
Posts: 5129
this is an xy problem whatever you can solve with 7 pixel high char rows should be solvable with 8 line high ones
2025-01-15 00:42
Krill

Registered: Apr 2002
Posts: 3106
Quoting Oswald
this is an xy problem whatever you can solve with 7 pixel high char rows should be solvable with 8 line high ones
I thought XY problem as well, but for other reasons. =)

Digger: As in really, why is a scattered memory layout such a big problem that it invalidates the entire technique for your purposes?
2025-01-15 06:13
ChristopherJam

Registered: Aug 2004
Posts: 1427
You could possibly do something ungodly with alternating 6 line rows with 8 line rows, so RC would go 01234501234567, but do a FLI fetch on the 8th line to fetch from a second char screen.

In char mode you'd be alternating between two screens, and using the first 14ish rows of each screen. You'd have to use a couple of charsets, where the second one is rotated down a line, and also duplicates line 7 into line 0 for use on line 7 of the even char rows.

(so, you only move on to the next row address every second char row, but it's a lot closer to what you're asking for than never advancing)
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