On Mon, Nov 05, 2007 at 06:55:44PM -0800, Chuck Guzis wrote:
I wrote:
> And what about the Atari ST? Looks pretty bit-mapped to me.
And on 5 Nov 2007 at 18:50, woodelf answered:
I am talking about machines that boot to a
bitmapped display.
Beg pardon? I'm lost again. The ST had no text mode--it booted to
the only display mode it had--graphics.
As did the Amiga (and just because it was centered around NTSC or PAL-
friendly frequencies didn't mean that you couldn't drive a VGA monitor
with either an add-in video card or built-in circuit (A3000) or
install a "workstation" monitor, like the A2024 or Viking Moniterm
(1008x1008x2 grayscale). I had a mega-pixel workstation display on
my Amiga when PCs came with 640x480. Boy, that was nice for software
development.
Text characters were drawn
by subroutine calls (through a very neat scheme of illegal opcode
traps).
That sounds like the technique the Mac used for its toolbox calls.
Right at boot, the ST clears a 32K video buffer.
And the Amiga does something similar (allocates a set of bitplanes
for the workbench - the old default being 640x200x2).
As to the charge of "game machine", yes, there were several models
of Amiga that were inexpensively made, and marketed to the home
game segment (A500, A600...). But also consider that the A3000(T)
and A3000/UX and A4000T were sturdily built, did not have a TV-out
jack (as the A1000, A500... did), and were priced much higher than
the game market. Saying that "the Amiga was just a game machine
because of model X" is like saying the PC was just a game machine
because of the PCjr.
I would consider that after the MC68000 entered the home market,
wrapped up as a Mac, an Atari, or an Amiga, the only "home" machine
that still booted to text mode was the PC, which they still do.
-ethan
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Ethan.Dicks at
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