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Forums > C64 Composing > Configurable addresses in multi sid tunes please
2019-08-31 22:03
Frantic

Registered: Mar 2003
Posts: 1626
Configurable addresses in multi sid tunes please

Hi guys!

If you want to make a fellow scener a tiny bit happier than he already is:

In multi sid tunes (2 sid chips or more) it would be super nice if more people started to add the possibility to configure the adress of the extra sid chips before the tune starts playing. After all, if you play multi sid tunes on a real machine it may not be easy to change the addressing of the extra sids you have. Sometimes there are jumpers which allow a bit of configuration (such as switching between de00 and df00, or between d4xx/d5xx or something). However, in many cases the configuration options are limited. For example, in my 3sid-machine, the sid chips are located at $d400, $d420 and $d500 and that's that. I can't change it. No jumpers or stuff like that. :)

I understand that most people use VICE or various cross platform music editors, or emulated+configurable "sid chips" like the ones in the 1541U2, when they deal with multi sid stuff, but still.. the real machine with real hardware sid chips is always the main target, right? ;)

Thanks in advance! ;)
 
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2020-12-27 17:12
chatGPZ

Registered: Dec 2001
Posts: 11088
Those are good ideas.... for 1982 =)
2020-12-27 18:46
tlr

Registered: Sep 2003
Posts: 1701
If you'd settle for 8 SIDs max, each of the four pages $d400-$d7ff could have a mirror of all 8 SIDs in 4 different layouts.
2021-08-30 09:14
Frantic

Registered: Mar 2003
Posts: 1626
In relation to the nice 3sid and 2sid releases at Xenium 2021 I just want to point out that it would be super cool to be able to play them on real hardware, which for some (me included, obviously) requires the possibility to configure the addresses (in my case to $d400, $d420 and $d500).

All of the tunes from Xenium 2021 used $d400, $d420, $d440.

Now, of course I don't expect anyone to do extra work just because I am sitting here wishing that I could play these 3sid tunes on my machine, but I still throw this out in case it would turn out to be trivial for the authors to achieve this configurability and in case it would allow more people to enjoy 3sid tunes on the real machine with real SID chips.
2021-08-30 14:26
Jammer

Registered: Nov 2002
Posts: 1288
Gotta implement it one day in MSL wrapper but seems like tough bitch to figure out in order to handle every single routine.
2021-08-30 14:50
chatGPZ

Registered: Dec 2001
Posts: 11088
very doable if you limit it to a handful "major" routines though :)
2021-08-30 15:15
Jammer

Registered: Nov 2002
Posts: 1288
Yeah... but plan is generally no to limit ;) As much as possible :D Thus tedious sweeping for multiple write mnemonics and praying it's not just data with identical sequence of bytes :D
2021-08-30 15:17
TheRyk

Registered: Mar 2009
Posts: 2035
If only ppl could have agreed on standard location(s) in the first place before creating such a mess over the years ^^ Sometimes reminds me of Joystick Ports and Games
2021-08-30 15:43
Frantic

Registered: Mar 2003
Posts: 1626
Quote: If only ppl could have agreed on standard location(s) in the first place before creating such a mess over the years ^^ Sometimes reminds me of Joystick Ports and Games

Yeah, let's solve the problem with a time machine! :D

Anyway.. I guess 99% of all 3sid tunes are made with GoatTracker or SidWizard.. no? Does any other editor need to be included? (2sid may be a little bit more widespread I suppose, but in actual practice quite few editors involved there as well.)

Maybe Ian can give us some statistics on the software used for 2sid and 3sid tunes released so far? :)
2021-08-31 12:58
Jammer

Registered: Nov 2002
Posts: 1288
BTW, is it expected behaviour in emulators that all SID mirrors have working ch3 waveform and adsr output? :O
2021-08-31 15:15
iAN CooG

Registered: May 2002
Posts: 3128
They wouldn't be mirror regs if they didn't replicate the functions of the first 0x20 regs.
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