Stupid Amiga Tricks

From: Deano Calver <deano_at_rattie.demon.co.uk>
Date: Thu Jun 10 16:47:56 2004

Vintage Computer Festival wrote:

>So Commodore thought they could be successful at defying convention by
>giving the stripped down model a higher model number?
>
>They certainly were insane, weren't they?
>
>
>
Yep always thought is weird they started at A1000 even though it only
had 256K...

A1000 is the black sheep of the family (and thats saying something given
the weird family that is Amiga)

The fact its missing several graphics modes is because when they adapted
the chipset to work with PAL systems they 'noticed' that that had enough
room in the chip to extend its 32 colour mode to 64 colour mode by
reusing the 32 colours shifted right once.
So every post A1000 Amiga has 'Extra Halfbrite mode' with a 6 bit plane
graphics mode but only a 32 entry CLUT. The top 32 colours are simple
the palette colours divided by 2.

It expansion connection is pin compatible with a A500 but not physically
compatible, at least without a hack saw and as somebody else mentioned
its parellel and serial ports are the other sex from all other Amiga's
and PC.

But as a games programmer, the Amiga's were an amazing machine, to this
day many PC graphics card blitter are less configurable than the Amiga's...


Bye,
Deano
Received on Thu Jun 10 2004 - 16:47:56 BST

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