Search found 182 matches

by stephen_usher
Sun Nov 24, 2019 6:36 pm
Forum: General QL Chat
Topic: A private QL Snapshot of 1986-88
Replies: 16
Views: 961

Re: A private QL Snapshot of 1986-88

I understand. I had usable MDR files I was able to read (and use) in the vDriveZX once it turned up.
by stephen_usher
Sun Nov 24, 2019 5:37 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8309

Re: Bad Apple demos

By the way, I'm always amazed by Marcel's talent. I feel a bit of a dunce beside what he manages.
by stephen_usher
Sun Nov 24, 2019 5:36 pm
Forum: General QL Chat
Topic: A private QL Snapshot of 1986-88
Replies: 16
Views: 961

Re: A private QL Snapshot of 1986-88

To be honest, usual a vDriveZX won't make things much faster.
by stephen_usher
Sun Nov 24, 2019 5:08 pm
Forum: General QL Chat
Topic: A private QL Snapshot of 1986-88
Replies: 16
Views: 961

Re: A private QL Snapshot of 1986-88

Have a look at this posting for ZX Microdrive data back-up... https://qlforum.co.uk/viewtopic.php?f=12&t=2996&start=10#p29395
by stephen_usher
Sun Nov 24, 2019 3:38 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8309

Re: Bad Apple demos

OK, I have music now, but it really shows up the variable frame rate. https://youtu.be/npDgDDuBh00 P.S. The source can be found here: http://www.lingula.org.uk/~steve/share/QL-m4video-codec2.tar.gz And the HD floppy disk image containing the executable and sample file (and a SuperBASIC program to pl...
by stephen_usher
Sun Nov 24, 2019 9:47 am
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8309

Re: Bad Apple demos

Marcel, I don't suppose you have a file containing the notes and timings for the "Bad Apple" tune do you? Preferably in terms of musical notes (maybe relative to middle C) and timings in seconds or some known fraction? I just want to try adding some music just with the QL beeper. If it we...
by stephen_usher
Sat Nov 23, 2019 3:25 pm
Forum: Software & Programming
Topic: XTC68 C Cross compiler
Replies: 30
Views: 4538

Re: XTC68 C Cross compiler

Excellent! That PDF was just what I was looking for. Thank-you!
by stephen_usher
Sat Nov 23, 2019 2:45 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8309

Re: Bad Apple demos

Marcel, I don't suppose you have a file containing the notes and timings for the "Bad Apple" tune do you? Preferably in terms of musical notes (maybe relative to middle C) and timings in seconds or some known fraction?

I just want to try adding some music just with the QL beeper.
by stephen_usher
Sat Nov 23, 2019 1:36 pm
Forum: Software & Programming
Topic: XTC68 C Cross compiler
Replies: 30
Views: 4538

Re: XTC68 C Cross compiler

Is there any documentation on the XTC68LIB libraries? I can't find any (or even the source). I see from the headers that there's a do_sound function but without a description of what the parameters actually are it's pretty useless. I'm sure there's a lot of other very useful stuff locked up in there...
by stephen_usher
Sat Nov 23, 2019 12:15 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 8309

Re: Bad Apple demos

Well, after the last couple of day's discussions I had another look at my code. It seems that with the XTCC compiler function calls are extremely expensive in terms of time so I refactored the code to decrease the number of calls to my file cache read and this sped the code up massively. I also chan...