Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!samsung!olivea!apple!motcsd!starnet!sschaem
From: sschaem@starnet.uucp (Stephan Schaem)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Lemmings - a tutorial Part IV
Message-ID: <1991Apr9.184017.4983@starnet.uucp>
Date: 9 Apr 91 18:40:17 GMT
References: <8432@crash.cts.com>
Organization: Starnet-Public Access UNIX-Los Altos,CA 415-949-3133, login:info
Lines: 26


 Roger what do you do when you need to disk for virtual map?! (Virtual
 memory read or read/write..)
 Its HARD to share with the system and make things multitasking.
 Note: I didn't say impossible.
 The worstin my case was use all of the sprite dma in a intuition screen
 environment...
 The blitter is no problem if you write (in my case) a routine to
 monitor blitter usage to dissable before a blit overlaping my requested
 time come.
 I use only 1 page, and have everything syncronised.I dont use ANY
 interupt for the matter.
 My game use 99% of the first 512K, and was designed for 1meg... So I
 use the disk for maps.(around 570K).
 Also its CPU intensive.Not all the time... But on a 1/60 second basis I
 could need 100% of the chip bus.

 And there is so many little things with designing sutch game in a
 multitasking enviroment.
 Not all games are the same, and when you pass the limit you use all the
 resource at the fullest.
 So I more than beleive that its a memory problem, but a resource
 sharing problem.Running Sonix and Delux music worked? (dont even
 remenber:-) All I know is that I had couple of utilities like than that
 didn't runed because it needed the resource to itself.(Sprite, audio).
 And in a game you depand on those.