Search found 63 matches

by 4thRock
Thu Jul 12, 2018 5:40 pm
Forum: ZXDB Discussion
Topic: Feature: Vector Graphics
Replies: 17
Views: 565

Re: Feature: Vector Graphics

I think the term is dated and a bit incorrect today. Vector artwork is usually used for 2D art, like logos or fonts. But it was used back in the day, meaning a 3D engine and display of 3D models. Anyway, it really means anything you display on screen (real-time computation) based on geometry and mat...
by 4thRock
Thu Jul 05, 2018 4:21 pm
Forum: Preservation
Topic: Musical tape loaders
Replies: 33
Views: 1275

Re: Musical tape loaders

TheShich wrote:
Wed Jul 04, 2018 9:02 pm
... Then with many trial and errors attempts I hand tuned my "piano".
...
Now imagine a piano with may notes missing, and remaining notes wrong.
Can you give us some more information ?
What note range is available ?
Do you have a table of Byte » Khz » Nearest Note ?
by 4thRock
Thu Jun 28, 2018 10:02 pm
Forum: Announcements
Topic: Abbots Archives - You Tube channel with commentary
Replies: 6
Views: 223

Re: Abbots Archives - You Tube channel with commentary

If we consider the digital equivalent of the Spectrum's PAL signal, the original capture resolution would be 384x288p50 . That means a large border, and the normal 256x192 screen area in the middle. 2x scaling will give you a normal SD resolution: 768x576 (downsized to 640x480 by YouTube) 5x scallin...
by 4thRock
Wed Jun 27, 2018 9:08 pm
Forum: Games/Software
Topic: Beginner's question about loading programs on ZX spectrum
Replies: 14
Views: 313

Re: Beginner's question about loading programs on ZX spectrum

From the PAL signal specs (if we trust Wikipedia https://en.wikipedia.org/wiki/PAL) we get: » Total time for each line 64.000 μs From somewhere on the Web, I got: » normal loading pulse 0.244 milliseconds PAL only has 576 active lines, out of 625. So you don't record for 3136μs » 3.13600 millisecond...
by 4thRock
Wed Jun 27, 2018 5:02 pm
Forum: Other Retro Stuff
Topic: BBC Computer Literacy Project
Replies: 7
Views: 273

Re: BBC Computer Literacy Project

Great find and very interesting!
by 4thRock
Mon Apr 30, 2018 9:20 pm
Forum: Website
Topic: Online Emulation Update
Replies: 32
Views: 1324

Re: Online Emulation Update

Yes, that works but it's not 100% accurate.
On a PC you still have the scroll bar, the screen DPIs are different, fonts are rendered differently and orientation doesn't change.
So it's OK to release with minor bugs and correct as needed :D
by 4thRock
Mon Apr 30, 2018 7:29 pm
Forum: Website
Topic: Online Emulation Update
Replies: 32
Views: 1324

Re: Online Emulation Update

Thanks for the feedback. It's hard to get it right on all devices because there are many variations. I always simulate a few but it's never 100% accurate. I'll sort it out no problem 😀
by 4thRock
Mon Apr 30, 2018 3:04 pm
Forum: Website
Topic: Online Emulation Update
Replies: 32
Views: 1324

Re: Online Emulation Update

Did some minor changes to the layout that should fix the Download listing on the iPad portrait display. Also made JJSpeccy smaller on landscape view (all devices). Not perfect but should work with no clipping or scrolling. Thanks all for feedback, I just hope I didn't break anything else in fixing t...
by 4thRock
Sun Apr 22, 2018 4:10 pm
Forum: Brand new software!
Topic: New Game: ROVR
Replies: 18
Views: 867

Re: New Game: ROVR

Good game with nice graphics. :D
by 4thRock
Sun Apr 22, 2018 4:03 pm
Forum: Music
Topic: #BeepolaFriday
Replies: 45
Views: 1986

Re: #BeepolaFriday

Great! It sounds great, specially the drums.
Looking forward for more!