Date: Sat, 26 Nov 1994 16:55:58 -0500 (CDT) From: Aaron Ucko Subject: Re: Memory Allignment To: wudavid AT ecf DOT toronto DOT edu Cc: djgpp AT sun DOT soe DOT clarkson DOT edu Organization: Rockhurst College; Kansas City, MO >Is memory allignment an important concept? > >If I want to blit a bitmap to a RAM screen buffer, I would imagine that >doing it 32 bits at a time is a good idea. (I'm using 8 bits per pixel) >Would this be bad if the long words were not properly alligned? yes >Is it better to just move bytes? perhaps >Is there a way to fix this? yes. move bytes until you hit a dword boundary, then move longs as long as possible, then move bytes until you're done. >Disclaimer: This message may not be politically correct. >The message may not be grammatically correct. The message may not be orthographically correct. [`aligned' has only 1 `l'] --- Aaron Ucko (ucko AT vax1 DOT rockhurst DOT edu; finger for PGP public key) -=- httyp! -=*=-Just because you're paranoid doesn't mean they aren't out to get you.-=*=- Geek code 2.1 [finger hayden AT vax1 DOT mankato DOT msus DOT edu for explanation]: GCS/M/S d(-) H s g+ p? !au a-- w+ v+ C++(+++)>++++ U-(S+)>++++ P+ L>++ 3(-) E-(----) !N>++ K- W(--) M-(--) V(--) po-(--) Y+(++) t(+) !5 j R G tv--(-) b+++ !D(--) B--(---) e>++++(*) u++(@) h!() f(+) r-(--)>+++ n+(-) y?