#Hello, Agnus?
26-Apr-95 01:48:21
Sb: #46634-#Hello, Agnus?
Fm: Barry Massoni 73260,1413
To: Ronald B. Romine 70322,1525
Ronald,
I was able to convert both of my A500's to address 1 meg of chip RAM.
Thanks for the information. Your instructions were good. It went fairly easily.
The only slight problem I had was when I mis-read your message about where to
cut the trace from the A501. I thought pin 32 of the expander would be the 8th
pin down and when it wasn't, I had to get a logic tester out and see which
things went where. I then re-read your instructions and found out you were just
giving the location of the pad, not where it connected.
When I opened my second A500 I found it had the Rev 6A mother board. It
was a bit easier because of the second well labeled jumper. Oh, the expander
(non 501) was usable as fast RAM (I tested it in the first 500, after making
the mods, before going on to the second A500). I'd like to mention it's name,
so others would know it can be used as chip RAM, but it dosn't have a name on
it and I don't remember who made it.
OK, you've known everything about Amiga so far-let me try one more thing.
Overscan-I notice that with "standard" overscan mode 480×352, many programs
showing images through the A520 leave a black bar about 1/2 an inch on the left
side of the image (on a 19" monitor). Only Photon Paint 2 and the first version
of a display program called "si" manage to fill the video screen with a 480×352
image. Is this a problem with the programs, the screen size, the A520 or what?
When using Mostra, if I increase image size to 480×362 (in Deluxe Photolab),
and do the same with the display size in Mostra, I get edge to edge coverage.
Interestingly- though I can set the display size to anything, I can't get edge
to edge coverage unless I increase the actual picture size to 362.
Thanks again for all your help and knowlegde. I didn't know the A1000 had
the signatures inside the case (and the dog print)- I thought that was the ill
fated Apple Lisa, not did I know about hidden icons. I did know about the 1.2
title bar messages- removed from 1.3 for obvious reasons. I'm sure Commodore
was less than pleased with the, "We made Amiga, they &%#!ed it up"
message-however true it is!
Barry