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carlsson
Registered: Nov 2002
Posts: 41 |
SID out of tune?
Recently a Speccy person elsewhere posted that:
Quote:The SID .. tended to be out of tune at extreme frequencies (the Speccy's beeper also suffers this problem). Where as the AY is much closer to perfect pitch.
Apart from being typical C64/SID-bashing (most Speccy people despise the SID for muddy sound blah blah blah), does the poster have a point? I can't recall I ever heard a SID tune that suffers from lack of frequency resolution so it sounds out of tune, except from when it was done on purpose or the musician didn't bother to get a good frequency table.
I know from personal experience that the VIC-20 has a very limited frequency resolution, but it is a completely different chip and supposedly nobody mixes up the two. Maybe if one uses very high frequencies (several thousand Hz?) on the SID, these notes will not be in tune, but few people can hear the difference, and it depends on monitor or other speakers if they can reproduce the notes faithfully. |
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JackAsser
Registered: Jun 2002
Posts: 2014 |
I understand your arguments Oswald, but STILL, how come many games are pure crap, such as Elite on the Speccy even if the CPU is THAT much faster? Are all those games coded by bad coders? Those are the arguments that are against you Oswald.
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Style
Registered: Jun 2004
Posts: 498 |
I dont think he's saying speccy is a better machine (which it clearly is not), simply that the z80 is faster than 6502, which is probably true for most things.
Obviously you could pick a specific application where 6502 is faster than z80, but generally youd have to say z80 is faster.
C64 kicks speccy due to custom hardware though (VIC-II and SID).
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JackAsser
Registered: Jun 2002
Posts: 2014 |
@style: True, that's a big difference. |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
Quote:I dont think he's saying speccy is a better machine (which it clearly is not), simply that the z80 is faster than 6502, which is probably true for most things.
its only (argueable) faster if it runs about 4 times faster =D |
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Oswald
Registered: Apr 2002
Posts: 5095 |
Jack, I think only the limited gfx capabilities make you say that a lot of speccy games are crap. (btw how many c64 games are crap ? :) Elite was ported from bbc micro, but I bet its bad code, I've seen an elite like game on speccy with a speed you can just dream of on a c64 :)
ps: you get it right what I want to "say":)
btw: did you know that on the bbc micro you could straight write assembly in the basic code (like 10 lda %d) ?:) |
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Oswald
Registered: Apr 2002
Posts: 5095 |
btw, carlsson have u told the speccy fool that sid is atleast 0.1% accurate, but that only at low freq, its mostly 0.01% accurate ? :) |
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CreaMD
Registered: Dec 2001
Posts: 3057 |
Quote: I understand your arguments Oswald, but STILL, how come many games are pure crap, such as Elite on the Speccy even if the CPU is THAT much faster? Are all those games coded by bad coders? Those are the arguments that are against you Oswald.
Elite on Speccy plays much better than C64 version. If you had both machines next to each other and tried to play you would see that speccy doesn't slow down so terribly anytime it has to draw some complicated stuff. I wonder where did you get that info that speccy version is worse. HAve you ever played it on real machine? |
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CreaMD
Registered: Dec 2001
Posts: 3057 |
Quote: I understand your arguments Oswald, but STILL, how come many games are pure crap, such as Elite on the Speccy even if the CPU is THAT much faster? Are all those games coded by bad coders? Those are the arguments that are against you Oswald.
Whoops double-post sorry. And yep. I played 3d games with filled vectors on speccy and it's not just psychlogical difference. They *are* fast and plays much better. As if seeing that demo wasn't enough to prove the simple fact that speccy is superior to C64 as far as math is concerned. I'm not happy about it, but I can admit it at least. |
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Graham
Account closed
Registered: Dec 2002
Posts: 990 |
Quote: why cant you face it that the z80 is faster :) "moving a value from one register set to alternate one is multi-instruction operation" obviously a good coder will not do that. and having a lot of registers, and even 2 sets of them is an advantage, funny how you turn that into a disadvantage in a second. if only I would face the problem on c64 to move a register to the 2nd register set ! :) instead I have to use crappy zp and tsx coz of the luck of registers.
A 3.5 MHz Z80 is faster than a 1 MHz 6502. But at the same clockspeed the Z80 is roughly only 50% speed of a 6502. Also you forget that the 6502 has 128 address registers :P |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
cant you move that crap to c.s.c ? =P |
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