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From: la@doc.ic.ac.uk (Liaket Ali)
Newsgroups: comp.sys.amiga.tech,comp.sys.amiga
Subject: Blitter, AmigaDOS and Multitasking
Message-ID: <2354@gould.doc.ic.ac.uk>
Date: 15 Oct 90 11:51:31 GMT
Sender: news@doc.ic.ac.uk
Organization: Dept. of Computing, Imperial College, London, UK.
Lines: 19

Help!
I am writing a level editor for a game which I am developing on the AMIGA 500.
The editor requires the use of the blitter quite extensively. Therefore in 
order to use the blitter in the Multitasking operating system, I have used
the ROM routines: OwnBlitter(),WaitBlit() and DisownBlit(). 

However this seems to make the drive lock up. For instance if I insert a disk
while my program is running (to save/load data) then the drive chugs a bit
and then stops with the light staying on! Then when I quit my program , the
system tells me that there is no disk in the drive! (even if I reinsert the
same disk or a different disk).

I would appreciate any help. My system is an AMIGA 500 KS1.3, with 1MB Ram +
Clock and External drive. The editor is written in assembly language and
the graphics use a 5 bitplane 320*256 display.

Thanks in advance.

LIAKET ALI     aka     la@doc.ic.ac.uk