🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: rec.games.programmer
Article #451

Re: ModeY vs 13h

#451
From: sl8nl
Date: Thu, 06 Aug 1992 16:49
24 lines
1221 bytes
> for drawing on 13h, u will draw in memory first (in an array) and then use
>  repz movsw to move it out to screen. that will be the fastest routine to 
> do it!

That's normally how it is done.

> if u do the same for modeY or X, then it will be very slow! it will be ten
> times slower if u draw to array first then flip to screen!

I draw directly to the screen for these modes.

> i have been using modex, modey for quite some time and found that this is the
> faster way. but it will still be slower than 13h (by around two times)

Ah, somebody is agreeing that it is slower!!!

> anyway, why waste this flicker-free mode and use 13h, which jerks when doing
> large scrollings?

The reason to waste Mode X and Y is because they aren't fast enough.  I've
not seen one super-fast arcade game pulled of in either of these modes (full-
screen, not like Jill).

Josh
Technical Details
Message-ID: <1992Aug6.104954.57909@cc.usu.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!caen!hellgate.utah.edu!cc.usu.edu!sl8nl
References: <1992Aug6.010439.21056@mnemosyne.cs.du.edu>

Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!caen!hellgate.utah.edu!cc.usu.edu!sl8nl
From: sl8nl@cc.usu.edu
Newsgroups: rec.games.programmer
Subject: Re: ModeY vs 13h
Message-ID: <1992Aug6.104954.57909@cc.usu.edu>
Date: 6 Aug 92 10:49:54 MDT
References: <1992Aug6.010439.21056@mnemosyne.cs.du.edu>
Organization: Utah State University
Lines: 25