Search found 922 matches

by kieranhj
Wed May 11, 2016 8:52 am
Forum: new projects and releases: demoscene
Topic: Beeb MOD Player
Replies: 72
Views: 8034

Re: Beeb MOD Player

My approach so far was to write a python script to parse VGMs, and see if I could optimize them a bit for realtime use, even if it was slightly lossy. The first optimization was to quantize the data to 50Hz intervals, and remove any redundant volume/tone register writes. For more complex chip tunes...
by kieranhj
Tue May 10, 2016 10:48 pm
Forum: new projects and releases: demoscene
Topic: Beeb MOD Player
Replies: 72
Views: 8034

Re: Beeb MOD Player

Bit of thread resurrection - Sarah I'm very interested in seeing how you went about implementing your mod player. Your demo disk is awesome. Would you be open to sharing the source code? I'm currently noodling with some vgm playback code and audio in general, and the idea of a mod tracker player is...
by kieranhj
Wed May 04, 2016 10:06 pm
Forum: past events & exhibitions
Topic: Sundown 2016 Demoparty, Budleigh Salterton, Devon, 15-17th July
Replies: 4
Views: 1668

Re: Sundown 2016 Demoparty, Budleigh Salterton, Devon, 15-17th July

This is all very well but you're not answering my question! ;)
by kieranhj
Tue May 03, 2016 9:46 pm
Forum: past events & exhibitions
Topic: Sundown 2016 Demoparty, Budleigh Salterton, Devon, 15-17th July
Replies: 4
Views: 1668

Sundown 2016 Demoparty, Budleigh Salterton, Devon, 15-17th July

Hey, anyone interested in heading down to the last ever Sundown Demoparty this year? I've never been to one but apparently this is the UK's only event. Down on the south coast of Devon. http://sundowndemoparty.net https://www.facebook.com/events/763075157127956/ Not sure how much Acorn action there ...
by kieranhj
Sat Apr 23, 2016 11:58 am
Forum: new ideas wishlist & general chat
Topic: what should i write next?
Replies: 313
Views: 33615

Re: what should i write next?

Original Gradius was a 68000 board IIRC but there were 8-bit ports for NES, C64 & Spectrum that might be helpful. Main challenge would be number of sprites being thrown around I guess.
by kieranhj
Sat Apr 23, 2016 11:31 am
Forum: past physical ABug events
Topic: ABug South - at Centre for Computing History, Cambridge August 26-28 2016
Replies: 258
Views: 43155

Re: ABUG South - at Centre for Computing History, Cambridge August 26-28 2016

I will definitely come along all day Saturday, so you will have someone to talk 6502 Beeb coding with, Tricky! (I might have even finished my demo by then...) With it being Bank Holiday weekend, I'm not sure if I can stay into Sunday but will figure it out nearer the time.
by kieranhj
Sat Apr 23, 2016 12:44 am
Forum: new ideas wishlist & general chat
Topic: what should i write next?
Replies: 313
Views: 33615

Re: what should i write next?

I always thought an endless runner type game would be a good fit for the Beeb given the ease of hardware sideways scrolling and/or ability to do different speed sideways scrolls via the magic of vertical rupture. But, as always, you'd likely need to solicit a 2D artist for the endeavour. +1 on 1942 ...
by kieranhj
Fri Mar 11, 2016 8:21 pm
Forum: 8-bit acorn emulators
Topic: Compiling B-em with Visual Studio 2010
Replies: 24
Views: 5196

Re: Compiling B-em with Visual Studio 2010

Yes, if someone could get a repeatable VS build source on GitHub that would be very helpful! I managed to get it compiled on VS2013 with OpenAL 1.1 but without alut, alas the audio had gained an occasional stutter. I also had all sorts of nightmares with conflicting defines in different headers betw...
by kieranhj
Sat Feb 27, 2016 12:47 am
Forum: trickysoft (new bbc micro games)
Topic: New version of Frogger (was: A demo of what is looking like a new Frogger for the beeb)
Replies: 198
Views: 40793

Re: A demo of what is looking like a new Frogger for the beeb

I'm curious this is all software rendered and so smooth at 50Hz. I too assumed this was vertical ruptured so you were "hardware" scrolling each row of sprites..!
by kieranhj
Sun Feb 21, 2016 4:06 pm
Forum: 8-bit acorn software: classic games
Topic: Thrust Disassembly
Replies: 54
Views: 10784

Re: Thrust Disassembly

Good spot! I'm missing one zero byte at the end of the status_bar_bytes array. I accidentally removed this when I removed the duplicated bootstrap / relocation code that I had from the first disassembly. It's picking up the first LDA from RELOC_START. I will fix this in any updates. (Again, I blame ...
by kieranhj
Sat Feb 20, 2016 6:43 pm
Forum: 8-bit acorn software: classic games
Topic: Thrust Disassembly
Replies: 54
Views: 10784

Re: Thrust Disassembly

So I've started a technical discussion on RS for those interested in the finer points of the assembly (!?) But in general it would be good to document the algorithms for the landscape / terrain, sprite plotting, physics simulation and the Bresenham line drawing (spelt incorrectly in the source - it ...
by kieranhj
Sat Feb 20, 2016 2:59 am
Forum: 8-bit acorn software: classic games
Topic: Thrust Disassembly
Replies: 54
Views: 10784

Re: Thrust Disassembly

It's silly o'clock so I'm just going to leave this file here and write a proper post tomorrow. I think this proves that (a) I can't be trusted to go to bed at a reasonable hour when my wife is away and (b) I must be slightly crazy to have gone to all this trouble for a 30+ year old video game. Shoul...
by kieranhj
Fri Feb 19, 2016 10:06 pm
Forum: 32-bit acorn software: other
Topic: Frame by frame 'analysis' of a Youtube video
Replies: 12
Views: 1772

Re: Frame by frame 'analysis' of a Youtube video

I've quite tempted to see if I could get this running on a BBC using MODE 7 gfx. The Spectrum version requires 512k which seems like cheating. :D
by kieranhj
Tue Feb 16, 2016 1:18 pm
Forum: 8-bit acorn software: classic games
Topic: Thrust Disassembly
Replies: 54
Views: 10784

Re: Thrust Disassembly

On the topic of emulators. There is an effort to put BeebEm into GitHub so it can continue to be developed (see thread in the Emulators board) - I'm sure it would be possible to add the self-documenting capabilty into that, or on a fork. The B-Em source is also readily available although I had some ...
by kieranhj
Thu Feb 11, 2016 11:07 am
Forum: 8-bit acorn software: classic games
Topic: Thrust Disassembly
Replies: 54
Views: 10784

Re: Thrust Disassembly

Yes please! All information is helpful. I went back to it last night after a month off (to write some of my own code for a change) and the scope of it is daunting. Currently tidying everything up with consistent naming and commenting to make it easier for others to digest and help document the final...
by kieranhj
Wed Feb 10, 2016 1:11 pm
Forum: 8-bit acorn software: classic games
Topic: Thrust Disassembly
Replies: 54
Views: 10784

Re: Thrust Disassembly

Cool! I will definitely take a look. I still haven't forgotten about posting the disassembly. Work has become painfully busy of late but I will get something out in the next couple of weeks. It won't be complete but I'm hoping you lot can crowd-source the rest of the reverse engineering with me. :)
by kieranhj
Sun Jan 31, 2016 5:33 pm
Forum: for sale / freebies
Topic: Personal Computer World magazine - October 1983
Replies: 2
Views: 1120

Personal Computer World magazine - October 1983

Again, totally random, where does this stuff come from? Anyway, PCW magazine from October 1983 including a small feature on the Electron plus articles on Apricot, Hyperion, Tulip and FX-20 (remember those? Me neither.) Happy to send to someone for price of postage.
by kieranhj
Sun Jan 31, 2016 5:19 pm
Forum: for sale / freebies
Topic: Alien 8 on cassette
Replies: 2
Views: 906

Re: Alien 8 on cassette

No worries. I'm sure I can find some more stuff to offload onto you!! ;)
by kieranhj
Sun Jan 31, 2016 5:15 pm
Forum: for sale / freebies
Topic: ZX Spectrum Introduction Manual
Replies: 1
Views: 907

ZX Spectrum Introduction Manual

No idea why I have this - a slim 30 page introduction manual for the ZX Spectrum! It's in good nick - anyone want it for the price of the stamp?
by kieranhj
Sun Jan 31, 2016 5:12 pm
Forum: for sale / freebies
Topic: Alien 8 on cassette
Replies: 2
Views: 906

Alien 8 on cassette

Hey all, would anyone like the tape edition of Alien 8 for "BBC Model B 1.2 OS" (according to the box!) for the price of postage? Inlay is included but I have no way of checking the tape. :)
by kieranhj
Sun Jan 31, 2016 5:09 pm
Forum: for sale / freebies
Topic: Mitsubishi 14" CRT monitor - free to good home
Replies: 2
Views: 945

Mitsubishi 14" CRT monitor - free to good home

Hey all, it's my weekly clear out time again. Would anyone like my old Mitsubushi CRT monitor? Modell XC-1404CB manufactured June 1986 according to the label on the back! I am using a SCART->HDMI convertor these days and don't have enough space for a CRT. Free to good home but would need to be colle...
by kieranhj
Thu Jan 21, 2016 7:39 pm
Forum: general
Topic: Where is everyone? An information gathering topic
Replies: 131
Views: 51143

Re: Where is everyone? An information gathering topic

Remembered to add myself!
by kieranhj
Thu Jan 21, 2016 7:16 pm
Forum: general
Topic: Archiving BBC Music in VGM
Replies: 15
Views: 2853

Re: Archiving BBC Music in VGM

If you have something that is cleanly buildable out of the box, that would be very helpful.
by kieranhj
Wed Jan 20, 2016 10:34 pm
Forum: general
Topic: Archiving BBC Music in VGM
Replies: 15
Views: 2853

Re: Archiving BBC Music in VGM

OK, understood. I'll rely on my hacky version for now until I can get a nice clean consistent build going that could potentially be profered as a v2.21. (Assuming anyone else is interested in archiving VGMs..!)
by kieranhj
Tue Jan 19, 2016 10:36 pm
Forum: general
Topic: Archiving BBC Music in VGM
Replies: 15
Views: 2853

Re: Archiving BBC Music in VGM

OK, progress of sorts. :) I have managed to build b-em 2.2 in Visual Studio 2013, kinda. It's been a long while since I did any Windows dev so I've been fighting slightly with the Windows SDK, the latest Allegro SDK and the latest OpenAL SDK but it does run once sellotaped together. Ironically the a...
by kieranhj
Mon Jan 18, 2016 10:20 pm
Forum: general
Topic: Archiving BBC Music in VGM
Replies: 15
Views: 2853

Re: Archiving BBC Music in VGM

Hmm, having fun getting b-em 2.2 built with the latest versions of the Allegro & OpenAL libraries. More tomorrow maybe!
by kieranhj
Mon Jan 18, 2016 8:51 am
Forum: general
Topic: Archiving BBC Music in VGM
Replies: 15
Views: 2853

Re: Archiving BBC Music in VGM

On inspection of the b-em sources, the vgm logging was not carried over from verson 1.5 when Tom rewrote for version 2.0. We should check with him why, just in case, but doesn't look like it would be too much work to add back in.
by kieranhj
Sun Jan 17, 2016 10:04 pm
Forum: general
Topic: Archiving BBC Music in VGM
Replies: 15
Views: 2853

Re: Archiving BBC Music in VGM

I think that it is a great idea. If we have the game in a form that beebem/b-em/jsbeeb etc can play it, it shouldn't really get lost, but having the music playable without the game would also be good. When I read your post on RetroSoftware, I was thinking that you were going to play VGMs on a beeb....
by kieranhj
Sun Jan 17, 2016 7:48 pm
Forum: for sale / freebies
Topic: P.M.F. Barcode Reader
Replies: 20
Views: 2659

Re: P.M.F. Barcode Reader

Sure. PM me your address and bundle up to send this week.
by kieranhj
Sun Jan 17, 2016 7:47 pm
Forum: general
Topic: Archiving BBC Music in VGM
Replies: 15
Views: 2853

Archiving BBC Music in VGM

Wasn't quite sure where to put this topic. I've been looking a lot at some of my old music disks and digging up various interesting Beeb music bits & bobs (e.g. enjoying Tom Walker's ST conversions.) (This is pure Beeb audio BTW, not BeebSID.) A lot of the old music programs are very proprietary, th...

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