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From: Chicken (all posts)
Date: 1998-07-20
Subject: Old one, mostly 4 TLC

Sziasztok!
Hi Levente,

> Rachy may have corrected this one (Sziasztok rulez :-) ).

Sure did!

> Hmmm... Eerrr... that's because you haven't invited her for a coffee,
> huh-huh.

She always brings her own to the course... At the JFK Institute they have a nice little cafe. But most of my courses take place somewhere else... So I usually don't get there in time! Anyway, there are other babes!

> From wave converters, I used some different versions. The one thatcontained
> everything I could do, is just a prototype (though, later I used it
> regularly without recoding).

I noticed, it's kinda spaghetti code :)

> 5-bit replay routine (residing on the zeropage),

Yeah, that's givin' some real speed!

> ADSR, waveforms, squarewave pulselevel, SID triangle SYNC and
> RING modulation effect (though the latter is buggy).
>
> - 'Prototype'. The first one which was coded entirely by me. Well, the
> most major improvement on 'Cool convert' is the new ADSR engine. I
> borrowed a c64 from a friend, and measured the ADSR of the SID by
> it's additional ADSR level register (3rd voice). The other one, the
> ability of SYNC on one channel per time.
>
> - 2.0 A. Seems to be a final version (92 summer). It contained the
> routines of the prototype, but it was much shorter. I didn't include
> SYNC, because of speed.

Is it uploaded somewhere?

> - 2.0 C. Fast IRQ version. 3 bits replay. The same styled digital replay
> routine like the first fast WIT types had (no serious things in the
> replay). ADSR, pulse level (this one is done by generating the
> squarewave in the memory in realtime). ADSR is done by not just dividing
> the output in the digital replay, but using precalculated wavetables.
> Sounds quite poor in opposition with the former, but runs fast.
>
> I also made some FRQ's (1.4, 1.5) which contained pseudo ADSR and
> 'intelligent' multiplexing.

I think I have those... I have coded a freq converter aswell, it's still very slow and I never really finished coding. Btw, do you know the converter routine used in "VECTOR-VICTORY" (converted by CSORY, one of my favorite demos ever)? I think the Converter was done by CSM, it doesn't use the C64 player routine but creates a TED one (kinda precalculated).
Therefore, it's REALLY fast. This routine was used in some parts of METALL ASS aswell, if I remember correctly... I have never seen the converter itself, though. Does anyone have it?

> BTW, I guess it would be possible to do someway. ...I just failed my exam
> which included z-transformation and transient functions :-(.

Btw, I had my last exam (US History) last Saturday and I guess I did pretty good :) I learned really hard, though. That's why I haven't been here on Friday!

> Well, what about the musics of Winter Events, Bongo, or King of Kings?

No, they suck! (Just my opinion... I like LAZA!, DIZASTERBLASTER and TERRA NOVA much better!)

> A viszontolvasasra (...sorry, I have no accented letters :-()

What does it mean? Something like "Avec plaisir"?
I think, I gotta answer some more mails...
See ya,
Christian