Search found 46 matches

by utz
Sun Sep 02, 2018 9:35 am
Forum: Music
Topic: irrlicht project live @ Ohrbit 2018
Replies: 3
Views: 612

Re: irrlicht project live @ Ohrbit 2018

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.
by utz
Thu Aug 30, 2018 10:16 pm
Forum: Music
Topic: irrlicht project live @ Ohrbit 2018
Replies: 3
Views: 612

irrlicht project live @ Ohrbit 2018

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...
by utz
Tue Jul 24, 2018 9:38 pm
Forum: Programming
Topic: Questions about FZX
Replies: 13
Views: 574

Re: Questions about FZX

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.
by utz
Tue Jul 24, 2018 4:49 pm
Forum: Programming
Topic: Questions about FZX
Replies: 13
Views: 574

Re: Questions about FZX

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 ...
by utz
Sun Apr 22, 2018 2:57 pm
Forum: Music
Topic: #BeepolaFriday
Replies: 45
Views: 2502

Re: #BeepolaFriday

Excellent work! Looking forward to many more #BeepolaFridays :)
by utz
Mon Apr 16, 2018 6:44 pm
Forum: Programming
Topic: Double buffering on the Spectrum
Replies: 40
Views: 1863

Re: Double buffering on the Spectrum

Ersh wrote:
Mon Apr 16, 2018 9:50 am
Ast A. Moore wrote:
Mon Apr 16, 2018 9:15 am
... If there’s enough interest in the subject, I’ll do a separate writeup, something along the lines of “The Definitive Guide to Using the Floating Bus” with an actual example and make a separate post about it.
Please do. :)
Here's some more interest ;)
by utz
Fri Mar 16, 2018 11:49 am
Forum: Programming
Topic: Compact 64 column print routine
Replies: 75
Views: 3324

Re: Compact 64 column print routine

Soooo... how many bytes in the print routine code are actually usable as character data? :twisted:
by utz
Thu Mar 15, 2018 7:08 pm
Forum: Programming
Topic: Compact 64 column print routine
Replies: 75
Views: 3324

Re: Compact 64 column print routine

Not that I have anything useful to say, but I do want to join the choir of appreciation. This is a piece of art.
by utz
Wed Mar 07, 2018 11:53 am
Forum: Programming
Topic: Comparing two 16bit numbers...
Replies: 10
Views: 545

Re: Comparing two 16bit numbers...

Simple. A comparison is just a subtraction with the result thrown away. or a ;clear carry flag ld hl,(highscore) ld de,newscore sbc hl,de jr nc,cont ;if highscore >= newscore, carry flag will be cleared ld (highscore),de ;if newscore > highscore, store new highscore cont ...
by utz
Wed Mar 07, 2018 10:10 am
Forum: Website
Topic: Moderator Action
Replies: 95
Views: 4901

Re: Moderator Action

It is very sad that this discussion has resulted in @Rorthron leaving his admin role. I support every step and action that he took. 100%. I have made a decision: We will tighten up the forum rules. The ban will be changed to 2 weeks. A repeat of his message style will result in permanent ban with n...