Path: chuka.playstation.co.uk!scea!greg_labrec@interactive.sony.com
From: Clint Kelly <clint@erols.com>
Newsgroups: scea.yaroze.programming.2d_graphics
Subject: Re: addresses
Date: Tue, 05 Aug 1997 18:45:09 -0400
Organization: Cornell University
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Developer Support wrote:
> 
> Clint Kelly wrote:
> >
> > I've had some trouble understanding the system for figuring to which
> > addresses I should load my tim files.  In the past, I just used
> > addresses from other programs (so that I could be sure that they were
> > within the range I was supposed to use), but now I have a problem with
> > my program and I'm pretty sure that it's due to where I'm loading my
> > files (i.e. I'm either using illegal addresses or my files overlap).
> >
> > Anyways, can somebody please either explain the addressing system to me
> > or else tell me four addresses I could use for these files?
> >
> > (all 8-bit)
> > sizes:  32x32, 384x64, 48x16, 64x32
> >
> > Any help will be GREATLY appreciated.
> >
> > Clint
> 
> You can use anything after 0x80090000, it depends on where your program
> goes. Its best to put your data before the main program, as the program
> is more likely to change size than the data.
> 
> Your files will take up 1x32x32 (0x400), 1x384x64 (0x6000), 1x48x16
> (0x300) and 1x64x32 (0x800). If they're TIM files they take up a bit
> more, you can check how much by using dir from the dos prompt.
> 
> Then it depends on where you put your program 0x80100000 should be fine
> in your case.
> 
> Your problems are probably due to overwritting files. Try 0x80090000,
> 0x80091000, 0x80098000 and 0x80099000.
> 
> Stuart

I tried what you said, and it didn't work.  Here's what my batch file looks like:
local dload base.tim   0x80090000	<-- 32x32
local dload boom.tim   0x80091000	<-- 384x64
local dload bullet.tim 0x80098000	<-- 48x16
local dload ship.tim   0x80099000	<-- 64x32
local load ny.pxe
go

I also tried subbing the second-last line with
local load ny.pxe 0x80100000
and
local dload ny.pxe 0x80100000

Every time, I get the following error:

The PlayStation has generated a Bus Error on Data Load exception at instruction address 
0x800229e8.  Huh?

Clint