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Forums > C64 Coding > VSP = HSP and HSP (Linecrunching) = VSP
2023-07-18 20:16
DeeKay

Registered: Nov 2002
Posts: 362
VSP = HSP and HSP (Linecrunching) = VSP

I don't know what scene genius decided that VERTICAL SCREEN POSITIONING should describe the effect of moving the screen HORIZONTALLY (and vice versa with HSP/Linecrunching) but it's been bugging me like forever... Isn't it about time we used the correct terminology?

Discuss! 8)

P.S: In Crest, we barely ever called it VSP and HSP, Crossbow just calls the effects "Wanker" (yes, seriously, from german "wanken", meaning to sway left & right - our english wasn't all that great back then!) and "Linecruncher"! ;-)
 
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2023-07-19 17:50
Hein

Registered: Apr 2004
Posts: 933
Quote: But nobody calls it "Variable". Not even Wikiedia does (which has it the right way around btw! ;-)

Also, "HSP" would still not make sense..

https://de.m.wikipedia.org/wiki/MOS_Technology_VIC_II


Didn't it originate from this demo? VSP&IK+

Oh, [edit] Ian already mentioned it, the source :)
2023-07-20 16:12
TMA

Registered: Mar 2002
Posts: 6
For a long time i thought that VSP stands for 'Variable Screen Position'.

But it make also sense that VSP means 'Vertical Screen Position' and HSP 'Horizontal Screen Position' aka Linecrunshing.

Together, VSP + HSP = AGSP (Any Given Screen Position).

But anyway, great stuff!
2023-07-20 16:37
chatGPZ

Registered: Dec 2001
Posts: 11147
Apparently Ivo Herzeg (aka Mr.Cursor) used "VSP" and "HSP" in the Magic Disk Articles: https://dmhas.de/site/downloads/IRQ-Kurs_Magic_Disk.pdf - that explains the confusion. Kinda weird to not at least clear it up, years after the term was established.
2023-07-20 17:56
HCL

Registered: Feb 2003
Posts: 717
The guys who could code when i was a lamer called it "D011-pusher".. probably since you used $d011 to "push" the screen sideways.. :P.
2023-07-20 20:17
Krill

Registered: Apr 2002
Posts: 2854
Quoting HCL
The guys who could code when i was a lamer called it "D011-pusher".. probably since you used $d011 to "push" the screen sideways.. :P.
Without the sideways bit i'd have assumed "D011 pusher" to mean FLD. =)
2023-07-20 20:41
HCL

Registered: Feb 2003
Posts: 717
Yeah.. it could pretty much go for anything d011-related.. :D
2023-07-20 23:00
Oswald

Registered: Apr 2002
Posts: 5028
if I was to name I would have named FLD screen tear up or STU :D it was exciting to see it is possible to tear distance between rows, from my perspective it does this :)
2023-07-21 09:32
Boogaloo

Registered: Aug 2019
Posts: 21
When we (Exilon and I) made Bonanza, we called it simply "$d011-scroll". Actually, we still call it that. :-)
2023-07-24 07:19
Martin Piper

Registered: Nov 2007
Posts: 645
Quote: For a long time i thought that VSP stands for 'Variable Screen Position'.

But it make also sense that VSP means 'Vertical Screen Position' and HSP 'Horizontal Screen Position' aka Linecrunshing.

Together, VSP + HSP = AGSP (Any Given Screen Position).

But anyway, great stuff!


I also used to use AGSP to refer to HSP+VSP.
2023-10-26 04:32
Fungus

Registered: Sep 2002
Posts: 629
VSP was always Variable Screen Positioning to me, Linecrunching, and AGSP (any given screen position). FLD was flexible line distance, fli flexible line interpolation, FPP Flexible pixel positioning, also seen it called FPD, or flexible pixel display. Sprite crunching too.

I like wanker though, since all demos are wanking off. I'm with Crossbow on that one.
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