Search found 256 matches

by VectorEyes
Tue Jul 09, 2019 11:36 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

Closing thoughts Before I get to anything else, I'd like to reiterate that Wave Runner was a team effort. Myself and Tom Seddon did the framework and effects code, the music compression and playback came from SimonM (via Twisted Brain), HexWab helped out with music player speedups (and also prototy...
by VectorEyes
Tue Jul 09, 2019 11:36 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

(Placeholder: Chequerboard Effect)
by VectorEyes
Tue Jul 09, 2019 11:35 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

(Placeholder: 'Blobs' Effect)
by VectorEyes
Tue Jul 09, 2019 11:35 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

Vertical Scrolltext Perhaps surprisingly, this effect is one of the more complicated ones, both in terms of code complexity in the Update and Render functions, and in terms of the pre-processing steps and tools used to generate the code and data. To understand this effect, we'll start by describing...
by VectorEyes
Tue Jul 09, 2019 11:35 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

Intro and Outro Image Sequence These are relatively simple effects, which showcase Dethmunk's artistic skills by displaying a sequence of images. There are essentially three types of transition used by these effects: Palette-based: The palette changes from 'all colours black' to 'standard MODE2 col...
by VectorEyes
Tue Jul 09, 2019 11:35 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

Logo Dissolve Effect Overview This effect -- the first one in the demo -- is based on vertical rupture, not stable raster. The effect reprograms the CRTC each scanline to choose which line of the logo to render (and also changes the palette to control the logo colour) but it does not 'draw' images ...
by VectorEyes
Tue Jul 09, 2019 11:34 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

Double Sine Wave Effect Introduction This effect uses stable raster to render a superposition of two sine waves. Each wave can have its left/right movement speed and vertical scale adjusted independently, and by choosing values carefully a variety of interesting patterns can be created. When the ef...
by VectorEyes
Tue Jul 09, 2019 11:34 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

NOP Slides and Clockslides In several places the demo needs to delay by an exact number of cycles, but the cycle count is continually changing and only known at runtime. The techniques necessary to do this are out there on the Web (e.g. https://www.pagetable.com/?p=669 ) but for those who are inter...
by VectorEyes
Tue Jul 09, 2019 11:34 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Re: Wave Runner Demo Details

The Demo Framework Wave Runner is heavily influenced by, and shares some code with, Twisted Brain (hereafter known as 'TB') There will be places in this write-up where it's easier to refer to TB and describe how Wave Runner is different than to describe how Wave Runner works in detail. Similarities...
by VectorEyes
Tue Jul 09, 2019 11:33 pm
Forum: projects
Topic: Wave Runner Demo Details
Replies: 20
Views: 1089

Wave Runner Demo Details

Introduction In a similar manner to Kieran's Twisted Brain write-up from last year, I'm going to describe how Wave Runner works under the hood, as well as providing some details about its genesis and how it all came together. The demo itself can be found here: https://bitshifters.github.io/posts/pr...
by VectorEyes
Sun Jul 07, 2019 11:12 pm
Forum: upcoming and recent events & exhibitions
Topic: Acorn World and ABUG meetup, Cambridge 20-22nd September 2019.
Replies: 237
Views: 7784

Re: Acorn World and ABUG meetup, Cambridge 20-22nd September 2019

Could I have a full table for Saturday and Sunday? I have too few holiday days left this year to justify the Friday!
by VectorEyes
Wed Jun 26, 2019 9:27 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG Cambridge 28th - 30th June 2019 BOOKING THREAD - Now FULL
Replies: 244
Views: 10489

Re: ABUG Cambridge 28th - 30th June 2019 BOOKING THREAD - NOW FULL

Just wanted to ask whether there was anyone (anyone? please?) attending from London who might be willing to pick up Master PSU for me and take it back with them so I could collect it from them in London? Would really appreciate it! If you can pick up from SW15 next week or something I can pick it u...
by VectorEyes
Wed Jun 26, 2019 3:13 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG Cambridge 28th - 30th June 2019 BOOKING THREAD - Now FULL
Replies: 244
Views: 10489

Re: ABUG Cambridge 28th - 30th June 2019 BOOKING THREAD - NOW FULL

Just wanted to ask whether there was anyone (anyone? please?) attending from London who might be willing to pick up Master PSU for me and take it back with them so I could collect it from them in London? Would really appreciate it!

Thanks, in hope and anticipation... :)
by VectorEyes
Tue Jun 25, 2019 11:40 am
Forum: for sale / freebies
Topic: Cambridge ABUG Giveaway
Replies: 45
Views: 1717

Re: Cambridge ABUG Giveaway

I'll nab the Helping Hand if it turns out VectorEyes doesn't want it. Take it. I'm more interested in the Master PSU to be honest! Is there anyone going from London who might be willing to take a PSU back with them for me to collect? If not I shall beg Elminster to let me send him a padded self-add...
by VectorEyes
Mon Jun 24, 2019 11:09 pm
Forum: for sale / freebies
Topic: Cambridge ABUG Giveaway
Replies: 45
Views: 1717

Re: Cambridge ABUG Giveaway

I *really* would like the master PSU but I can't make Abug this year... If I can find someone who could collect could I have it?

And the helping hand would be nice but if someone else wants it that's fine!
by VectorEyes
Sat Jun 22, 2019 9:43 pm
Forum: upcoming and recent events & exhibitions
Topic: NOVA 19 demoparty: 21-23 June 2019, Budleigh Salterton, Devon
Replies: 14
Views: 861

Re: NOVA 19 demoparty: 21-23 June 2019, Budleigh Salterton, Devon

danielj wrote:
Sat Jun 22, 2019 9:31 pm
Ooooh, that was good. When do we get the tech details? :D
Give us a few days to catch up on sleep and we'll get on it. :)
by VectorEyes
Wed May 01, 2019 9:37 pm
Forum: programming
Topic: Customizing SPEECH! by Superior Software
Replies: 4
Views: 475

Re: Customizing SPEECH! by Superior Software

Perfect time for me to me to mention that I once tried "*SAY GHOTI" and, well, try it for yourself... :)
by VectorEyes
Wed Apr 10, 2019 8:53 am
Forum: hardware
Topic: My New BBC Master
Replies: 17
Views: 710

Re: My New BBC Master

It's pretty normal to find Masters in that sort of condition. I've seen several and about half looked untouched inside, apart from the battery pack which always leaks, and the casing around the UHF modulator which is prone to rust.
by VectorEyes
Wed Apr 10, 2019 12:28 am
Forum: software: classic games
Topic: Getting started with Exile...
Replies: 21
Views: 928

Re: Getting started with Exile...

That item is a grenade... Do you have a copy of the manual? It describes a few of the basics, such as walking towards something while pressing "pick up" (the comma key) to pick it up, S to store it in your pocket (you have four pockets) and G to get it out again. And Space to activate it... Oh, and ...
by VectorEyes
Tue Apr 09, 2019 9:37 pm
Forum: software: classic games
Topic: Getting started with Exile...
Replies: 21
Views: 928

Re: Getting started with Exile...

It's really nice to see someone playing Exile for the first time after all these years. Decades later I can still sit down at a keyboard and remember all the keys when playing.

Please let us know how you're getting on and ask for hints when you're stuck! Have you found the second door passcard yet?
by VectorEyes
Mon Apr 08, 2019 12:20 am
Forum: software: classic games
Topic: Getting started with Exile...
Replies: 21
Views: 928

Re: Getting started with Exile...

Reading the Novella will help, but reading the manual even more. As with just about every 80s game, there's no tutorial and you really will be stuck without the info therein! One quick tip: - Don't kill creatures that aren't a definite threat. Don't even kill ones which are 'annoying but not deadly'...
by VectorEyes
Sat Mar 30, 2019 10:36 pm
Forum: software: classic games
Topic: Who's ready for... guess that game! ;D
Replies: 52
Views: 1908

Re: Who's ready for... guess that game! ;D

It's not from Exile is it? The sound made when an enemy expires, perhaps the robots or birds? My first home computer was an Electron and that sound is tantalisingly familiar, but I don't know if that's just my imagination playing tricks on me! (Although it occurs to me that I only ever played Exile ...
by VectorEyes
Sun Mar 24, 2019 1:48 am
Forum: general
Topic: Today I received.....
Replies: 5410
Views: 418645

Re: Today I received.....

I have an Enterprise but haven't had time to play with it yet. Are you planning on doing anything interesting with it?
by VectorEyes
Mon Mar 11, 2019 1:03 am
Forum: software: new games
Topic: Doom?
Replies: 125
Views: 6815

Re: Doom?

We urgently need pictures. :)
by VectorEyes
Thu Mar 07, 2019 9:12 pm
Forum: software: new games
Topic: Stunt Car Racer for BBC Master
Replies: 60
Views: 3730

Re: Stunt Car Racer for BBC Master

I've been watching the development of this and it's been fascinating. These guys are coding machines! A fantastic effort, well done!
by VectorEyes
Thu Mar 07, 2019 3:37 pm
Forum: hardware
Topic: Microvitec CUB showing horizontal line. Repairable?
Replies: 2
Views: 262

Re: Microvitec CUB showing horizontal line. Repairable?

Thanks Mark, appreciate your reply. Do you have any experience of working on and repairing electronic systems? I've recapped a bunch of PSUs and soldered a few things together (pin headers onto Raspberry Pis, etc) but that's about it. Are you aware of the high voltages inside a CRT display? Yes, whi...
by VectorEyes
Thu Mar 07, 2019 2:34 pm
Forum: hardware
Topic: Microvitec CUB showing horizontal line. Repairable?
Replies: 2
Views: 262

Microvitec CUB showing horizontal line. Repairable?

Hi all, I've got a Microvitec Cub which is externally in great condition, but shows only a single horizontal line in the middle of the screen. As I type (from a Beeb I have plugged in via RGB cable) I can see the brightness of parts of the line change as the letters appear, so it's clearly receiving...
by VectorEyes
Thu Mar 07, 2019 12:52 am
Forum: off-topic
Topic: Acorn Art Thread
Replies: 896
Views: 60898

Re: Acorn Art Thread

Wow. Love all your stuff but the last 7 or 8 have been really outstanding. Thanks!
by VectorEyes
Tue Mar 05, 2019 1:08 pm
Forum: hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 595
Views: 59233

Re: Palettemate / enhanced video ULA with 4096 colours

So, my suspicions were correct and DISEN was overriding the cursor output. I've now got a version of the firmware that fixes the problem. I'll obviously use this on any new boards but previous boards will need to have their CPLD updated. If you're able to program Altera CPLDs (MAX II) then drop me ...
by VectorEyes
Mon Mar 04, 2019 10:05 pm
Forum: hardware
Topic: VideoNuLA survey
Replies: 10
Views: 582

Re: VideoNuLA survey

There's the stuff that's attached right now, and the stuff that I could attach if I wanted to, but is just sitting around or waiting to be built. Currently my Master has a Data centre, internal Pi CoPro (which involved a bit of shenanigans involving extra-long pin headers to get it fitting above the...