Search found 911 matches

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: 136

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: 2
Views: 143

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: 261

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: acorn & bbc micro user group (abug) events
Topic: Weeknight 'Virtual' Dev session #2, Thursday 10th September 2020, 7pm - 10pm
Replies: 52
Views: 1587

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: acorn & bbc micro user group (abug) events
Topic: Weeknight 'Virtual' Dev session #2, Thursday 10th September 2020, 7pm - 10pm
Replies: 52
Views: 1587

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: acorn & bbc micro user group (abug) events
Topic: All-day 'Virtual' Acorn session #8, Saturday 3rd October 2020, 9am - 11pm
Replies: 17
Views: 701

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: 73
Views: 2510

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: 85
Views: 4221

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: 351

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: 295
Views: 29915

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: 936

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: 1110

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: 439

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: 439

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: 701

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: 701

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: 1431

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: 1431

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: 1586

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...
by kieranhj
Sat Aug 01, 2020 7:04 pm
Forum: 32-bit acorn emulators
Topic: Do any Archimedes emulators have debug tools?
Replies: 14
Views: 792

Re: Do any Archimedes emulators have debug tools?

If you want to write the debugger Steve, I know we’d all be grateful!! :wink:
by kieranhj
Sat Aug 01, 2020 9:55 am
Forum: acorn & bbc micro user group (abug) events
Topic: All-day 'Virtual' ABug session #7, Sat 5th September 2020, 9am - 11pm. Supporting CCfCH. *ACORN/ACORNSOFT Special*
Replies: 83
Views: 3855

Re: All-day 'Virtual' ABug session #7, Saturday 5th September 2020, 9am - 11pm. Supporting CCfCH.

Thanks again to all the organisers! Please put me down for the day. Looking forward to finding out what the sessions will be. :D
by kieranhj
Wed Jul 29, 2020 4:55 pm
Forum: new projects and releases: demoscene
Topic: Thousands of colours (Acorn Electron)
Replies: 6
Views: 455

Re: Thousands of colours (Acorn Electron)

Nice! Although I'm never fan of flickering colours at 50Hz. I'm wondering though, would it perhaps be possible to make an effect similar to the 2-colour plasma from Twisted Brain?
by kieranhj
Wed Jul 22, 2020 11:27 pm
Forum: development tools
Topic: Looking for a <modern image format> to bitmap tool (python, preferably)
Replies: 4
Views: 283

Re: Looking for a <modern image format> to bitmap tool (python, preferably)

Thanks. That would still be really useful actually as you’d end up with a PNG just containing the correct 256 colours for MODE 13. It would be easy to extend the above Python script to output the correct byte encoding for loading directly into MODE 13 screen buffer. I don’t really want to be reinven...
by kieranhj
Wed Jul 22, 2020 11:12 pm
Forum: the complete BBC games archive
Topic: Disassembly problem
Replies: 11
Views: 1065

Re: Disassembly problem

Yeah the library is a bit busted. That’s been filed as a bug, along with some others, on GitHub: https://github.com/shawty/BBCB_DFS_Catalog/issues/3
by kieranhj
Wed Jul 22, 2020 11:09 pm
Forum: development tools
Topic: Looking for a <modern image format> to bitmap tool (python, preferably)
Replies: 4
Views: 283

Re: Looking for a <modern image format> to bitmap tool (python, preferably)

I’ve got a png2arc Python script but it only works for MODE 9 and requires input PNG images with <= 16 colours. It does spit out a separate 64 byte file with the colour palette values at least. https://github.com/kieranhj/stniccc-archie/blob/master/bin/png2arc.py It’s been on my list to do a MODE 13...
by kieranhj
Sun Jul 19, 2020 10:38 am
Forum: programming
Topic: Timing of code (Risc OS)
Replies: 3
Views: 365

Re: Timing of code (Risc OS)

Coming from the Beeb I always forget the Archie has a border. I will borrow this idea for raster timing!
by kieranhj
Sat Jul 18, 2020 10:15 pm
Forum: introduce yourself
Topic: Hello from Oslo
Replies: 14
Views: 523

Re: Hello from Oslo

Welcome to the forum Tor! Any new Archimedes demos in the offing maybe? There’s been a small resurgence of late... :D
by kieranhj
Fri Jul 17, 2020 7:04 pm
Forum: past all-day virtual ABugs
Topic: All-day 'Virtual' Acorn session #6, Saturday 1st August 2020, 9am - 11pm [NOW FULL!]
Replies: 105
Views: 4673

Re: All-day 'Virtual' Acorn session #6, Saturday 1st August 2020, 9am - 11pm

I’d like to attend this session please! I should be around for the afternoon and evening. Thanks again for organising.
by kieranhj
Fri Jul 17, 2020 9:32 am
Forum: programming
Topic: Big machine code programs
Replies: 14
Views: 663

Re: Big machine code programs

The thought of trying to build a massive program like POP on a real BBC Micro brings me out in a sweat. :shock:
by kieranhj
Wed Jul 15, 2020 9:34 pm
Forum: bitshifters (new bbc master games)
Topic: Prince of Persia
Replies: 167
Views: 17809

Re: Prince of Persia

Well it seems like I can hardly let the POP fans down now, can I? This is a Release Candidate for version 1.2 that hopefully works with MOS 3.5 and Master Compact. I hesitate to call it a fix, more a massive hack :? so any testing on real hardware would be gratefully received before I update the off...

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