Spectrum Computing

A Tcl interpreter, you say? Excellent! That should be quite workable. I'm controlling MAME through a stdio pipe. I could in theory do sockets, but it needs to work on Windows as well, so pipe is easier to do for me, I believe. One feature that would be great to have is to be able to execute code on ...

Is it possible to control ZXEmuT through stdin? If so, I could actually use it as an alternative to MAME in my Bintracker music editor.

What a waste. That key should be remapped as a second Ctrl key, of course

So no-one indenting for loops, conditional code etc ??? it is not even always possible, considering that jumps can create a fine web. it is much easier (and cleaner, i believe) to split the code to "logical blocks" with empty lines. Exactly, it's not always possible/useful to apply best f...

Ah yes, I studied Zymosis quite extensively when I wrote my own z80 emulation library a few years ago. It's an excellent piece of code. Glad to see you're still working on it.

OK, that shouldn't be a problem. I think using LGPL may complicate things given that the Spectrum that doesn't any formal kind of dynamic linking, unless you count something like including the player as a separate block on the tape. I have changed the license to 2-clause BSD, is this acceptable? Gr...

It just occured to me that I didn't voice my excitement about this yet! So: This is a fantastic project, I love it! I would actually want to support the driver in my upcoming new tracker/chiptune audio workstation . However, I have some concerns regarding the license. Generally speaking, chip music ...

* You can try to speed up the spectrum to fit the right number of Ts in one vertical frame and halt the clock during portions of the horizontal scan to match the hdmi horizontal rate. This doesn't work either as it breaks audio. Beeper sound is sh*t and ay doesn't work for sampled music or stuff th...

Ast A. Moore: Some nice voodoo with parity there ;) But looks like it doesn't produce the desired output, unfortunately. djnzx48: Hmm, maybe I should've just posted a naïve asm implementation instead of being clever in the middle of the night. In any case, your second snippet does the right thing. S...

Hi, Been twisting my head over this little assembly problem for quite some time without much progress. I have a nested conditional that I want to calculate as fast as possible and in constant time . Assuming three 8-bit integers a , b , and d , I want to calculate the following: if (abs(a - b) > d) ...

Very kind of you wanting to credit me for this Just "utz" is fine, or if you like you could throw in a link to my website, https://irrlichtproject.de.

Besides the Computerspielemuseum, there's also the Signallabor at Humboldt University. Not sure if they have any GDR Speccy clones, but there is at least one KC85/4 ready to be used ;) It's a semi-public place, so best to make an appointment with Stefan Höltgen before visiting. He also does some the...

Perhaps not so useful for most coders, but I often use 2 of them in sequence for timing purposes. Just 2 bytes for wasting 38 t-states - can't get any more bang for the buck than this on Z80.

Distribution of PASMO without source is technically also illegal, since it's released under GPL.

Excellent write-up, I'm thoroughly enjoying this. Gears creaking quite a bit in me ol' brain, but so far I could mostly follow your explanations.

Doesn't quite work for me with latest nightly. On step 'Verify the Install': $ zcc +zx -vn test.c -o test -lndos warning: unknown option '-iquote.' warning: unknown option '-isystem/home/myuser/path/to/z88dk/lib/config/../..//include' spurious duplicate filename '/tmp/tmpXXkntuNK.i2' - vs. 'test.c'...

The current correct way of building z88dk is described here: https://github.com/z88dk/z88dk/wiki/installation#linux--unix Doesn't quite work for me with latest nightly. On step 'Verify the Install': $ zcc +zx -vn test.c -o test -lndos warning: unknown option '-iquote.' warning: unknown option '-isy...

https://chipmusic.org/forums/topic/27/v ... racker-ii/

Btw the most recent version of VTII is available at https://bitbucket.org/ivanpirog/vortext ... downloads/ . The above tutorial is for original VTII though, but it should be enough to get you started either way.

And which of them have ingame music?

Ahh, background beeper music, the holy grail of ZX 48K programming :mrgreen: While the Joffa approach certainly works, it won't help much if you plan on making a 50 Hz or 25 Hz game. There is another solution, but it's so tedious that it has never been done. Ok, so your idea about dedicating half a ...

Thanks Just playing preprogrammed tracks, so it's more of a DJ set, really. Unlike some more talented folks My calculator software does give me possibility for live interaction (muting channels, triggering effects etc), but I definately need to build some more live tools for the ZX beeper.

Thought I'd share this lil' recording of the live set I recently played at the Ohrbit chiptune festival in Duisburg, Germany. ZX beeper music, with a few TI calculator tracks and an Atari VCS tune thrown in. Style-wise it's pretty heavy, mostly metal and hard-rock, occasionally with some screaming v...

Don't skip the position bytes. Pass them to the driver after you've passed the AT token. The way you have it now, the first two chars of "TEST" are interpreted as the position

In other words, throw out the "or a, jp z,..." and you should be fine.

3. Is there a way to implement the FZX driver in a pure Z80 assembly code, pointing to a string defined by DEFM? You can simply call FXZdriver.asm::START with a character held in the A register. The character can be 0x16 (representing an AT keyword), which can then be followed up with a horizontal ...

Excellent work! Looking forward to many more #BeepolaFridays