RE: penny-lane.prg

From: Didier Derny <>
Date: Thu, 29 Dec 2011 13:56:20 +0100
Message-ID: <000901ccc629$4328fc20$c97af460$@org>

There is also the possibility that it's not the version I heard in 1981.
The version I'm speaking has no graphics, just the name of the song
And was written by a musician/programmer working for procep.
Apparently In the company, they heard some sorts of sound
And finally this song for almost 3 months...

Perhaps It's not the latest version.

The youtube is better than the program on emulation.
I don’t have a real vc20 to compare


-----Message d'origine-----
De :
[] De la part de Marko Mäkelä
Envoyé : jeudi 29 décembre 2011 13:39
À :
Objet : Re: penny-lane.prg

On Thu, Dec 29, 2011 at 01:03:02PM +0100, Anders Carlsson wrote:
>Usually a change in the frequency table or even transposing to a 
>different key does wonders when it comes to VIC-20 music.

Yes, the f=base_frequency/x is so inaccurate with x being from 1 to 128 
or something like that. With higher frequencies (small values of x), the 
error gets bigger, because 1/x and 1/(x+1) would be further apart than 
with low frequencies (big values of x).

On the SID, choosing frequencies is much easier, because you would 
specify a 16-bit multiplier of a base frequency, not a divider. IIRC, 
the TED uses the VIC-I divider principle as well, but the divider is 
wider than 7 bits (16 bits?).

>Then we have the PAL vs NTSC issues too.. some songs might sound great 
>in one key with PAL frequencies but awful with corresponding NTSC 
>frequencies (and even worse if replayed with PAL frequencies on a NTSC 

Exactly, it is very hard to produce good-sounding music on the VIC-I.


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Received on 2011-12-29 13:00:30

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