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| From: MagerValp (all posts)
Date: 1999-12-02
Subject: Re: Plus 4
|
>>>>> "Marko" == =?ISO-8859-1?Q?Marko M=E4kel=E4?= <ISO-8859-1> writes:
Argh, why doesn't VM handle your name in the body?
MV> Good one :) Seriously though, who designed the TED? Has anyone MV> spoken to the design team about why they decided to leave out MV> sprites?
Marko> Maybe they wanted to make the borders narrower. Sprite pointers Marko> and data will be fetched in the side borders, as you probably Marko> already knew. The TED has only 57 cycles per line (17 for the Marko> border), while the VIC-II has 63, 64 or 65 (23..25 for the Marko> border). On the other hand, incrementing the number of cycles Marko> per line will also dictate a higher bus clock frequency (it Marko> must be CYCLES_PER_LINE*15625 Hz (a few hunder Hz different on Marko> NTSC)) and therefore higher performance.
This implies that they could have made a faster (63*15625*2=1968750)
and more capable machine by adding sprites. Weird.
Btw, were there ever TED machines with Swedish/Finnish keyboards?
--
___ . . . . . + . . o
_|___|_ + . + . + . . Per Olofsson, konstnär
o-o . . . o + MagerValp@cling.gu.se
- + + . http://www.cling.gu.se/~cl3polof/
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