SoundTracker for ZX81 ?

[Moggy]

Andy If I get what Yerz is saying is the SNG format unique or will a renamed TAP file from the speccy tracker work?

Moggy.

[Andy Rea]

Erm... i don't know how to get Spectrum files in the raw, i guess you wouldn't need the header block for a start just the data block.

When i wanted the song data i just did a memory dump from a spectrum emulator and then renamed that dump as SNG

if i remeber right the data starts at 25000 on spectrum.

Edit @ Yerz, send me a uncompiled song for ZX48 (Spectrum) and i'll see if i can work out an easy way to do it.

[yerzmyey]

Sure thing guys, here it is:
http://yerzmyey.republika.pl/sng.tap

[Andy Rea]

Well i can tell you that it's not straight forward, after chopping off the header what i'm left with is...

1) not long enough so ZX48 (Spectrum songtracker does some compacting before saving raw data)
2) seems to be in a different order to whats in the memory at work time.

i'll see if i can mke a small program to convert from one to the other, if not, i can manually reaarange it and then resave it in such a way that you can load it into ZX81 tracker
but it's late here now i really have to go to sleep.

Rgards, Andy

[yerzmyey]

Of course.
Have a nice weekend, guys!

[Andy Rea]

Here ya go, simple player, with all of 4 controls,

you should have your STC files in the same folder and they should be named '01.STC' '02.STC' '03.STC' ..... '98.STC' '99.STC' so you can have upto 99 songs

controls are simple :

'P' plays the song
'S' stops the song (play will continue from this stop point)
'N' load next song
'R' reset current song back to the beginning

Andy

STPLAY.P

[Moggy]

Hate to say it Andy but all I get is noise, is there some special setting I'm missing?


Moggy.

[Andy Rea]

Erm i don't think so, i just downloaded the file myself ( sanity check, to make sure i uploaded the right file ! )

you have named your STC file 01.STC 02.STC and so on using only 2 digits and starting with 01.STC ?

and make sure you do CONFIG "M=H" if any of your STC files are greater than 8K the defualt load address is 32768.

Andy

[Andy Rea]

With regards to the ZX48 (spectrum) tap files of uncompiled songs, i see whats going on now.... they are saved as samples, positions map, song length, ornaments, delay value, pattern lenght, and finally patterns, but in the memory image the different elements are in another different order.

Shouldn't be too hard to knock up something that can convert the tap to SNG.

becuase i did not envisage getting involved in transfering from one format to the other, i just went with the memory map layout, that way i could run 2 emulators side by side, and compare the memories of each to see that what i was coding yeilded the same result.

Oh hum....

Andy

[Moggy]

@Andy

Solved, the renamer I use wasn't adding the leading zero to the first 9 files hence corrupt sound
Renamed those first nine by hand and ten onwards with renamer, jobs a good'un.


Cracking little jobby by the way
This has to be what Yerz is after.

Cheers.
Moggy.