Search found 922 matches

by kieranhj
Sat Nov 14, 2020 12:51 pm
Forum: miscellaneous new bbc and electron games
Topic: BBC AGD Games
Replies: 23
Views: 2621

Re: BBC AGD Games

I figure I should just share this here, rather than leave it languishing on my PC. Although I'm no longer actively helping with the development of BBC AGD, I did have some success a while back converting Foggy's Quest by Dethmunk into MODE 1 to give it a bit of colour (the Spectrum version looks gor...
by kieranhj
Sat Oct 24, 2020 11:00 pm
Forum: past all-day virtual ABugs
Topic: All-day 'Virtual' Acorn session #9, Saturday 7th November 2020, 9am - 11pm
Replies: 39
Views: 2089

Re: All-day 'Virtual' Acorn session #9, Saturday 7th November 2020, 9am - 11pm

Thanks again for organising! Please put me down for the afternoon and evening. 8)
by kieranhj
Sun Oct 18, 2020 10:56 pm
Forum: new projects in development: games
Topic: BBC Pooyan
Replies: 101
Views: 6170

Re: BBC Pooyan

If you found some suitable VGM files for music then you should have come talk to us Bitshifters! Try taking a look at https://github.com/simondotm/vgm-converter and https://github.com/simondotm/vgm-player-bbc from simonm. Drop me or Simon a PM if you need any help getting it going. Keep up the good ...
by kieranhj
Fri Oct 09, 2020 4:06 pm
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #5, Thursday 22nd October 2020, 7pm - 10pm
Replies: 29
Views: 1008

Re: Weeknight 'Virtual' Dev session #5, Thursday 22nd October 2020, 7pm - 10pm

Unfortunately (well, fortunate for me) I'm away on holiday on that Thursday. I will endeavour to attend the following session in November and maybe even see if I can get the CRTC Registers masterclass together by then.
by kieranhj
Thu Oct 08, 2020 8:45 am
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #4, Thursday 8th October 2020, 7pm - 10pm
Replies: 15
Views: 708

Re: Weeknight 'Virtual' Dev session #4, Thursday 8th October 2020, 7pm - 10pm

Not sure I will be able to make it tonight but will pop in if I can.
by kieranhj
Wed Sep 30, 2020 7:53 pm
Forum: general
Topic: Can MODE 3 or MODE 6 display graphics?
Replies: 4
Views: 425

Re: Can MODE 3 or MODE 6 display graphics?

I understand it wouldn't look pretty with the two blank scanlines creating a dashed line effect unless I also changed the value in CTRC register 9 to 7 to remove the blank scanlines, but I wonder if anyone else has tried such a thing? If you want an equivalent of MODE 0 or 4 but with just 25 charac...
by kieranhj
Wed Sep 30, 2020 5:18 pm
Forum: new projects in development: games
Topic: Elementum - new Elk/Beeb platformer
Replies: 135
Views: 6145

Re: New Elk/Beeb platformer - playable demo

Great work, as ever! It is super-smooth and responsive. The coyote time jumping is absolutely essential and become a gameplay feature I see. If I was going to be critical then I would say that the collision detection is a bit too coarse at the moment. Would it be possible to make this pixel-perfect?...
by kieranhj
Fri Sep 25, 2020 10:28 pm
Forum: 8-bit acorn software: classic games
Topic: Acorn - A World in Pixels - new book
Replies: 25
Views: 2008

Re: Acorn - A World in Pixels - new book

What a list of contributors! And the book looks like a really high quality edition. Really looking forward to reading this. :D
by kieranhj
Thu Sep 24, 2020 10:20 am
Forum: new projects in development: games
Topic: Elementum - new Elk/Beeb platformer
Replies: 135
Views: 6145

Re: New Elk platformer - playable demo

A modified MODE 1 (256x256) on the Beeb would save 4K and you only have to inc/dec the hi byte of the screen address to switch char rows. A square MODE 1 (256x256) on the Beeb takes 16K but you still need to increment two pages to get to the next character row as there are 64 columns * 8 bytes per ...
by kieranhj
Wed Sep 23, 2020 4:43 pm
Forum: new projects in development: games
Topic: Elementum - new Elk/Beeb platformer
Replies: 135
Views: 6145

Re: New Elk platformer - playable demo

0xC0DE wrote:
Wed Sep 23, 2020 4:24 pm
Thanks for all the positive comments and suggestions for improvements. There will definitely be a Beeb version! Actually, it will be a multi-platform version that runs equally well on either system (as games should!).
Beeb version in MODE 1 maybe? :wink:
by kieranhj
Wed Sep 23, 2020 12:20 pm
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #3, Thursday 24th September 2020, 7pm - 10pm
Replies: 35
Views: 1510

Re: Weeknight 'Virtual' Dev session #3, Thursday 24th September 2020, 7pm - 10pm

Ooops, yes, I'll be there tomorrow. No Masterclass from me this time though! (I have CRTC register programming and maybe Video ULA 101 on the backlog though.)
by kieranhj
Mon Sep 14, 2020 6:55 pm
Forum: trickysoft (new bbc micro games)
Topic: Canyon Bomber emulator/source code port without the source
Replies: 3
Views: 260

Re: Canyon Bomber emulator/source code port without the source

And again, good job with this port. It's a funny little game, that I'd also never heard of, but quite addictive once you get into it, as you say. I love the NULA version in dreary grey, very authentic! :D I think I like your MODE 1 colour choices better. Enjoyed the video again too.
by kieranhj
Mon Sep 14, 2020 6:49 pm
Forum: trickysoft (new bbc micro games)
Topic: Super Breakout emulator/source code port without the source
Replies: 3
Views: 384

Re: Super Breakout emulator/source code port without the source

So many games! You have been busy Tricky. :wink: Great work once again, and also enjoyed the video a lot hearing about your history with the game and the details of how it works. Good stuff. =D>
by kieranhj
Mon Sep 14, 2020 6:45 pm
Forum: trickysoft (new bbc micro games)
Topic: Asteroids emulator/source code port without the source
Replies: 9
Views: 428

Re: Asteroids emulator/source code port without the source

Excellent work Tricky, as ever! And a fantastic video, really interesting to hear about the details of making the game. :)

Now, about that 6502 copro version with line drawing in MODE 0. :-k :D
by kieranhj
Mon Sep 14, 2020 6:18 pm
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #2, Thursday 10th September 2020, 7pm - 10pm
Replies: 55
Views: 2854

Re: Weeknight 'Virtual' Dev session #2, Thursday 10th September 2020, 7pm - 10pm

I'm looking forward to catching up with some of the presentations I missed. The ones I saw were very inspiring and it's great to see people still developing for the Atom, Beeb, Electron and Archimedes. Kieran, your 'introduction to timer interrupts' was superb! I remember trying to work out this st...
by kieranhj
Fri Sep 11, 2020 10:53 am
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #2, Thursday 10th September 2020, 7pm - 10pm
Replies: 55
Views: 2854

Re: Weeknight 'Virtual' Dev session #2, Thursday 10th September 2020, 7pm - 10pm

Nice to see everyone last night and thanks again to Arcadian for organising. I hope the Intro to Interrupts session was practical and useful. All the text and asm code can be found on GitHub: https://github.com/kieranhj/intro-to-interrupts. In the spirit of improvement, please feel free to PM me wit...
by kieranhj
Thu Sep 10, 2020 3:46 pm
Forum: past all-day virtual ABugs
Topic: All-day 'Virtual' Acorn session #8, Saturday 3rd October 2020, 9am - 11pm
Replies: 80
Views: 3565

Re: All-day 'Virtual' Acorn session #8, Saturday 3rd October 2020, 9am - 11pm

Oooh, if Chris is presenting please put me down for the afternoon & evening.
by kieranhj
Tue Sep 01, 2020 6:16 pm
Forum: 8-bit acorn software: classic games
Topic: BBC Elite source, now fully documented and explained
Replies: 75
Views: 3913

Re: BBC Elite source, now fully documented and explained

(The README contains full acknowledgements of those whose shoulders I have stood on for this project, but I must give a particular shout out to kieranhj, whose original port of the source code to BeebAsm gave me the starting point for this project. You really inspired me, Kieran - thank you.) This ...
by kieranhj
Sat Aug 29, 2020 5:54 pm
Forum: new projects in development: games
Topic: BBC Pooyan
Replies: 101
Views: 6170

Re: BBC Pooyan

Looking good! Nice to see so many wolves on screen at once, really gives it that arcade feel.
by kieranhj
Thu Aug 27, 2020 11:34 pm
Forum: new projects and releases: demoscene
Topic: Smacker Player for Beeb
Replies: 7
Views: 569

Re: Smacker Player for Beeb

Looks great!

Is this running on a Pi copro streaming over the Tube? I’ve tried some simple delta video codecs streaming from floppy in MODEs 4 & 7 with mixed results. I’m thinking Smacker is likely going to be too heavyweight at 4kb/s + 2MHz 6502?
by kieranhj
Sun Aug 23, 2020 2:54 pm
Forum: new ideas wishlist & general chat
Topic: what should i write next?
Replies: 318
Views: 33853

Re: what should i write next?

Love the MODE 1 ‘hires’ look - I think dithered ghosts would work well too. EDIT: I see what you mean about the challenge of having a 288 pixel high screen. I think having lives and fruit on the side looks fine but the scores feel a bit cramped. Any chance you could leave them at the top? What heigh...
by kieranhj
Fri Aug 21, 2020 4:38 pm
Forum: programming
Topic: Acorn Masterclass series: An Introduction to Interrupts on the BBC Micro - Part 1
Replies: 4
Views: 1077

Re: Acorn Masterclass series: An Introduction to Interrupts on the BBC Micro - Part 1

Thanks Dave, thanks BigEd. By a fortunate coincidence, TobyLobster just started a thread about their BBC MOS Reassembly: https://stardot.org.uk/forums/viewtopic.php?f=54&t=20303 This looks like a great resource - you can step through the MOS IRQ handler line-by-line with comments here: https://tobyl...
by kieranhj
Mon Aug 17, 2020 7:41 pm
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #1, Thursday 20th August 2020, 7pm - 10pm
Replies: 26
Views: 1621

Re: Weeknight 'Virtual' Dev session #1, Thursday 20th August 2020, 7pm - 10pm

I've been figuring out my calendar for this week, but have confirmed I can attend so please put me down for the full session! Project-wise I can do a show & tell of the Rocket Sync Tracker connected to Arculator - an interesting way of sequencing demos that has a lot of potential and may encourage f...
by kieranhj
Sun Aug 16, 2020 3:24 pm
Forum: programming
Topic: Learn programming on acorn archimedes?
Replies: 7
Views: 609

Re: Learn programming on acorn archimedes?

I don’t have anything as small as Hello World but there is a repo with a (slow) MODE 9 implementation of the Doom fire effect: https://github.com/kieranhj/doom-fire How basic a Hello World were you looking for? This is plotting direct to the screen in MODE 9, with a single buffers, although the code...
by kieranhj
Sat Aug 15, 2020 4:11 pm
Forum: programming
Topic: Learn programming on acorn archimedes?
Replies: 7
Views: 609

Re: Learn programming on acorn archimedes?

Hey, always great to hear when people are interested in developing for Archimedes! I posted this thread about my 'modern' development environment setup on Windows: https://stardot.org.uk/forums/viewtopic.php?f=29&t=18635. I'm not creating ADF or AIF files, just absolute executables, so assembled at ...
by kieranhj
Sat Aug 15, 2020 12:41 am
Forum: 8-bit acorn hardware
Topic: New to physical BBC retrocomputing
Replies: 15
Views: 848

Re: New to physical BBC retrocomputing

Now you mention it, I do have a very crusty issue 4 Beeb that has incredibly stiff & sticky keys that are quite unpleasant to type on and often don't connect even though they have to be quite deliberately pressed. I don't have a good answer to how to improve this, as I don't use it as my 'regular' m...
by kieranhj
Sat Aug 15, 2020 12:33 am
Forum: 8-bit acorn hardware
Topic: New to physical BBC retrocomputing
Replies: 15
Views: 848

Re: New to physical BBC retrocomputing

It's not a 'cherry' Master is it? The keyboard for those later models feels very different from a classic BBC.

EDIT: Pictures would help!
by kieranhj
Wed Aug 05, 2020 9:40 pm
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #0, Thursday 6th August 2020, 7pm - 10pm
Replies: 36
Views: 1982

Re: Weeknight 'Virtual' Dev session #0, Thursday 6th August 2020, 7pm - 10pm

These are fabulous suggestions Kieran and it would be great if one of the aims of these Dev Nights were to be the creation of a video-based encyclopedia for would-be Acorn games/demo programmers, of all abilities. I think it would be beneficial if we could try and identify a 'programme' of topics t...
by kieranhj
Wed Aug 05, 2020 7:17 pm
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #0, Thursday 6th August 2020, 7pm - 10pm
Replies: 36
Views: 1982

Re: Weeknight 'Virtual' Dev session #0, Thursday 6th August 2020, 7pm - 10pm

By good fortune I am free tomorrow evening so will join for the full session. I look forward to seeing everyone online again. :) I PM'd this to Arcadian, but on reflection warrants posting here for potential discussion tomorrow. I think it will be really important to establish the purpose & structur...
by kieranhj
Mon Aug 03, 2020 6:23 pm
Forum: new projects and releases: demoscene
Topic: Boing ball BASIC demo
Replies: 38
Views: 2288

Re: Boing ball BASIC demo

It couldn’t be in BASIC but on a Master you could do this at 50Hz with single pixel horizontal & vertical movement in MODE 2 by using vertical rupture to scroll vertically one scanline at a time, plus SHADOW RAM to offset a second copy of the ball by one pixel. For the background you could make a fi...

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