Search found 920 matches

by kieranhj
Sat May 16, 2020 8:11 pm
Forum: 8-bit acorn software: games - high scores
Topic: Acorn Virtual Saturday May 16th HSC
Replies: 28
Views: 1256

Re: Acorn Virtual Saturday May 16th HSC

15125

Great game! I'd forgotten how good the music was.
by kieranhj
Fri May 08, 2020 5:21 pm
Forum: past all-day virtual ABugs
Topic: All-day 'Virtual' Acorn session #3, Saturday 16th May 2020, 9am - 9pm. Supporting CCfCH. 50 attendees max. NOW FULL!
Replies: 125
Views: 8639

Re: All-day 'Virtual' Acorn session #3, Saturday 16th May 2020, 9am - 9pm. Supporting CCfCH.

Hello all. Looking forward to the virtual meet up and sharing some of the interesting stuff we did to make our 3D demo for the BBC. I’m hoping to attend for most of the afternoon and into the evening.
by kieranhj
Thu May 07, 2020 7:17 pm
Forum: general
Topic: Today I received.....
Replies: 5988
Views: 611999

Re: Today I received.....

danielj wrote:
Thu May 07, 2020 6:42 pm
That's a beaut - signed? :)
Sadly not. You’d think so after all that bloody work. :wink:
by kieranhj
Thu May 07, 2020 4:38 pm
Forum: general
Topic: Today I received.....
Replies: 5988
Views: 611999

Re: Today I received.....

trixster wrote:
Sat May 02, 2020 4:24 pm
It's a Sam Coupé which is often thought of as a pimped or super spectrum. They're rather uncommon these days as only around 12000 were made apparently.
Nice! You do like your rare machines... :D

I just received this. Newly issued US hardcover edition.
by kieranhj
Sat May 02, 2020 6:38 pm
Forum: new projects in development: games
Topic: Untitled Dungeon Game
Replies: 50
Views: 3837

Re: Untitled Dungeon Game

Thanks for the info. I suspect the LZSA decompressor is faster than Exomizer so you’ve probably made the right trade off. I will get round to throughly testing them both one of these days!
by kieranhj
Sat May 02, 2020 3:47 pm
Forum: new projects in development: games
Topic: Untitled Dungeon Game
Replies: 50
Views: 3837

Re: Untitled Dungeon Game

Interesting stats Chris, thanks for sharing. I must have a look at LZSA! Did you have time to compare the same image with Exomizer 3 by any chance?
by kieranhj
Fri May 01, 2020 1:30 pm
Forum: new projects in development: games
Topic: Untitled Dungeon Game
Replies: 50
Views: 3837

Re: Untitled Dungeon Game

Your game is looking really nice! Great job, there's certainly a lot of hard work that's gone into it so far. =D> Try using the Exomizer 3.0.2 executable (from the website Simon linked) on your images and see what the file sizes come out as: exomizer.exe level -M256 mode1_screen.bin@0x0000 -o mode1_...
by kieranhj
Wed Apr 22, 2020 10:02 pm
Forum: general
Topic: Today I received.....
Replies: 5988
Views: 611999

Re: Today I received.....

After reading the CCH’s plea for support during their Coronavirus closure, I ordered a year’s membership in advance - starts the first day you visit after they reopen. Nice to try and give them some cash flow in this challenging time. I want them still to be there when this is all over! More info on...
by kieranhj
Sun Apr 19, 2020 10:22 pm
Forum: new projects and releases: demoscene
Topic: BEEB-NICCC: New Bitshifters demo released at Revision 2020
Replies: 15
Views: 1536

Re: BEEB-NICCC: New Bitshifters demo released at Revision 2020

UPDATE! Version 1.1 has just been released! This has a number of bug fixes, including the Model B lock up problem, but most importantly Video NuLA support. :D A huge thank you to Tom Seddon for doing 99% of the work to get the NuLA version not only running but optimised and polished. I have to say ...
by kieranhj
Sun Apr 12, 2020 10:26 am
Forum: new projects and releases: demoscene
Topic: BEEB-NICCC: New Bitshifters demo released at Revision 2020
Replies: 15
Views: 1536

BEEB-NICCC: New Bitshifters demo released at Revision 2020

Hello fellow Stardotters, Bitshifters released our new demo at the legendary Revision demoparty in the Old Skool compo yesterday: https://bitshifters.github.io/posts/prods/bs-beeb-niccc.html It is a recreation of the classic 3D demo STNICCC-2000 by Oxygene, which was originally released on the Atari...
by kieranhj
Thu Apr 09, 2020 7:31 pm
Forum: 8-bit acorn software: classic games
Topic: Exile versions
Replies: 10
Views: 926

Re: Exile versions

The sprites in Exile are all stored as 2bpp anyway and mapped to a 3 colour palette (plus black / transparent) at run-time in the software plot routine. It’s quite ingenious, for the BBC Micro at least. (It also handles mirroring and masking behind foreground objects.) Exile makes extensive use of h...
by kieranhj
Tue Mar 24, 2020 10:00 pm
Forum: introduce yourself
Topic: Hello from Hampshire
Replies: 24
Views: 1264

Re: Hello from Hampshire

Yes, sorry, the file loading mechanism for Prince of Persia is a bit convoluted. It loads sectors directly from the disc in drive 0 so you can’t *COPY the files or run from a different drive I’m afraid. This was all because I needed ~50 catalogue entries but also wanted to fit everything on a single...
by kieranhj
Fri Mar 20, 2020 5:43 pm
Forum: 8-bit acorn hardware
Topic: VideoNuLA and 6845 questions
Replies: 15
Views: 1075

Re: VideoNuLA and 6845 questions

I am trying to understand "rupture" smooth vertical scrolling. I've seen some useful info on an Amstrad CPC464 forum, but would appreciate if anyone could check my understanding of a typical use case: - divide screen into 3 vertical regions: - 1 at top, small, static - 2 in middle, large, smooth (a...
by kieranhj
Wed Mar 18, 2020 8:31 pm
Forum: programming
Topic: zero page addresses help please
Replies: 14
Views: 1208

Re: zero page addresses help please

The other thing to note is that very few vars need to be zero page. Obviously anything that’s using an indirected load/store through a pointer has to be in ZP and anything that’s in tight inner loops, like counters, would be advised. But if you’re only touching the var once per frame, or even less, ...
by kieranhj
Fri Mar 13, 2020 3:33 pm
Forum: programming
Topic: 6845 Shenanigans
Replies: 5
Views: 814

Re: 6845 Shenanigans

Welcome to the wonderful world of CRTC register abuse! It is a lot of fun. :D jsBeeb is by far and away the most accurate emulator when it comes to display timing but you should find both b2 and b-em are very good and sufficient for your experiments, unless you’re getting down to needing to update r...
by kieranhj
Thu Mar 12, 2020 8:42 pm
Forum: bitshifters (new bbc master games)
Topic: Prince of Persia
Replies: 167
Views: 18643

Re: Prince of Persia

Just completed this - still astounded that you got it to run on a BBC Master! I'd only played the first level before on an Atari ST (I think). It's amazing how many neat little touches there are across the 12 levels considering it's an 8 bit game. The Mode 2 graphics add a certain charm that I thin...
by kieranhj
Fri Jan 31, 2020 7:05 pm
Forum: 32-bit acorn software: other
Topic: Modern development environment for Archimedes
Replies: 4
Views: 1197

Modern development environment for Archimedes

Hey all, I've recently started dabbling in some ARM development again, as a change from several years of 6502, targeting the 'classic era' Archimedes machines, so A310 through A5000, but mostly focused on A30x0 as a standard configuration. I thought I'd start a thread on setting up a modern developm...
by kieranhj
Fri Jan 31, 2020 9:21 am
Forum: past events & exhibitions
Topic: BBC Micro Lives at ROUGOL / Mon 17th Feb 2020
Replies: 11
Views: 1439

Re: BBC Micro Lives at ROUGOL / Mon 17th Feb 2020

Doh! I really wanted to come along to this one to support Jason and chip-in with some of my own BBC exploits. Alas it falls during the school half-term holidays so my wife has already booked us to be away for a long weekend. #-o I look forward to hearing how it goes and what the RISCOS folks make of...
by kieranhj
Sat Jan 18, 2020 5:22 pm
Forum: wanted
Topic: Wanted: A3000
Replies: 2
Views: 400

Re: Wanted: A3000

I have an A3020 already so looking for an A3000 at this time.
by kieranhj
Sat Jan 18, 2020 4:51 pm
Forum: wanted
Topic: Wanted: A3000
Replies: 2
Views: 400

Wanted: A3000

Hello all, I’m interested in acquiring an A3000 for software development purposes. I am happy to pay a fair, but not excessive, price depending on configuration of RAM/HDD etc. Only requirement is that the machine is in full working order and the motherboard is demonstrably free of battery damage (c...
by kieranhj
Sun Jan 12, 2020 4:57 pm
Forum: 8-bit acorn software: classic games
Topic: Electron Elite disk image.
Replies: 14
Views: 1318

Re: Electron Elite disk image.

Elite typically did have anti-tampering CRC protection in a number of places.

I made a buildable disassembly of the BBC cassette version of Elite (probably the closest to the Electron version) which you can find on GitHub here: https://github.com/kieranhj/elite-beebasm
by kieranhj
Mon Jan 06, 2020 9:23 pm
Forum: general
Topic: Today I received.....
Replies: 5988
Views: 611999

Re: Today I received.....

Maybe 2020 is the year of ‘next gen’...? :wink:
by kieranhj
Sat Jan 04, 2020 7:36 pm
Forum: general
Topic: Post pictures of your beeb setup
Replies: 231
Views: 37305

Re: Post pictures of your beeb setup

I found some time over the holidays to get my office set back up. I have managed to squeeze in 9 machines (not including the laptop) that can be used with only a modicum of cable shuffling. I’m on a bit of a ‘next gen’ trip for 2020 hence the Atari ST, Amiga and Archie. Of course it’ll all get destr...
by kieranhj
Fri Dec 27, 2019 10:39 pm
Forum: general
Topic: 363C Lecture: The Ultimate Acorn Archimedes talk
Replies: 3
Views: 659

Re: 363C Lecture: The Ultimate Acorn Archimedes talk

I saw this mentioned on Twitter but didn’t have a link to the media for the talk itself, so thank you for posting that! Looking forward to watching it soon. 8)
by kieranhj
Fri Dec 27, 2019 5:35 pm
Forum: new projects and releases: demoscene
Topic: Bouncing Basketball tech demo on the Acorn Electron
Replies: 40
Views: 3021

Re: Bouncing Basketball tech demo on the Acorn Electron

=D> You’re just showing off now. :wink:

Any chance of an ssd now I’ve got my Elk set up with an SD64 plz?

Looking forward to what you come up with next and maybe a full length demo for NOVA2020...?
by kieranhj
Fri Dec 27, 2019 5:19 pm
Forum: new projects and releases: demoscene
Topic: New demo - Horizon (RISC OS, ARM2/3)
Replies: 11
Views: 2652

Re: New demo - Horizon

Thanks for doing a write up Sarah, this is really interesting. It’s been so long since I did any ARM, I naively assumed there would be no need for lots of unrolled code but clearly I’m completely wrong! I think I managed a 4x4 pixel rotozoomer but that was my limit BITD. There are a ton of awesome e...
by kieranhj
Sat Dec 14, 2019 11:40 pm
Forum: new projects and releases: demoscene
Topic: Merry Christmas from Bitshifters!
Replies: 10
Views: 1292

Re: Merry Christmas from Bitshifters!

IIRC many of the effects are done by changing the palette at the right moment. Can this be done on a FPGAtom, now that we have 64 colours and an eight MHz cpu core? This one has no fancy palette switching or CRTC tricks - at 2MHz there’s just enough time to move 64 3x3 pixel blocks independently. S...
by kieranhj
Sat Dec 14, 2019 10:34 pm
Forum: new projects and releases: demoscene
Topic: Merry Christmas from Bitshifters!
Replies: 10
Views: 1292

Re: Merry Christmas from Bitshifters!

:shock: :shock: Absolutely nuts! Such smooth animation. Brilliant! =D> =D> Btw, unlike the older version on the Bitshifters website, the latest version of JSBeeb enables sound on iOS: https://bbc.godbolt.org/?disc=https://bitshifters.github.io/content/bs-xmas-19.ssd&autoboot&model=Master :idea: Tha...
by kieranhj
Sat Dec 14, 2019 10:04 pm
Forum: new projects and releases: demoscene
Topic: Merry Christmas from Bitshifters!
Replies: 10
Views: 1292

Merry Christmas from Bitshifters!

bs-xmas-19.png
A festive greeting from Bitshifters for your BBC Micro!
https://bitshifters.github.io/posts/pro ... as-19.html
by kieranhj
Sat Dec 14, 2019 12:21 am
Forum: new projects and releases: demoscene
Topic: The well known Bad Apple demo on the Acorn Electron
Replies: 19
Views: 2048

Re: The well known Bad Apple demo on the Acorn Electron

Amazing work! Love the high-res scanline look. =D>

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