Search found 922 matches

by kieranhj
Sat Sep 24, 2016 8:01 pm
Forum: 8-bit acorn software: other
Topic: More Colours in mode 7
Replies: 64
Views: 7048

Re: More Colours in mode 7

Looks nice in jsbeeb but B-Em just flickers like heck. :? Let me go try on my Master..
by kieranhj
Sat Sep 24, 2016 8:34 am
Forum: 8-bit acorn software: other
Topic: Image2Mode7 - general image to teletext converter
Replies: 56
Views: 10559

Re: Image2Mode7 - general image to teletext converter

You probably already realize this but even without changing the loss function, you can find a marginally better image (lower total error) by trying graphic chars other than the one that seems to be the best fit! I guess the advantage is that they result in a different hold char, and surprisingly th...
by kieranhj
Fri Sep 23, 2016 10:10 pm
Forum: 8-bit acorn software: other
Topic: Image2Mode7 - general image to teletext converter
Replies: 56
Views: 10559

Re: Image2Mode7 - general image to teletext converter

Just a thought, but would it be better to do the 3 bit colour quantization after the resize? This might preserve more image detail. Similarly perhaps dithering at the colour quantization step might retain more dynamic range. I noticed Julians via demo used dithering to a fairly decent effect is all...
by kieranhj
Thu Sep 22, 2016 6:45 pm
Forum: miscellaneous new bbc and electron games
Topic: Death Zone - A new game for BeebEm
Replies: 24
Views: 5853

Re: Death Zone - A new game for BeebEm

Haven't you heard? Rich is writing BeebAsm v2.0. :D
by kieranhj
Wed Sep 21, 2016 10:50 pm
Forum: 8-bit acorn software: other
Topic: Image2Mode7 - general image to teletext converter
Replies: 56
Views: 10559

Re: Image2Mode7 - general image to teletext converter

Hey all, Glad you like it and have managed to get some results out. Love the Mona Lisa pic. :) I tried to setup a Win7 VM for testing but my Dell laptop is trolling me with display driver issues (the VM works but I can't see anything, gah!) I will rebuild with all static linking turned on to see if ...
by kieranhj
Wed Sep 21, 2016 6:56 am
Forum: 8-bit acorn software: other
Topic: Image2Mode7 - general image to teletext converter
Replies: 56
Views: 10559

Re: Image2Mode7 - general image to teletext converter

Hey Lurkio, Please bear with me, it's been a while since I had to figure out distributing Windoes exes (usually it's just a BBC SSD image :) ). It was built as x86 but you are correct that was on a 64-bit Windows 10 machine with VS 2015. I'll check the various compatibility options and see if I can ...
by kieranhj
Tue Sep 20, 2016 10:25 pm
Forum: 8-bit acorn software: other
Topic: Image2Mode7 - general image to teletext converter
Replies: 56
Views: 10559

Image2Mode7 - general image to teletext converter

Hey everyone, As part of my MODE 7 explorations I've written a general purpose image to teletext convertor. It's early days, and command-line only I'm afraid, but I thought I would share it on here for testing & feedback and to see what people might be able to do with it. Executable is attached in t...
by kieranhj
Sat Sep 17, 2016 10:53 pm
Forum: programming
Topic: Bitshifters - Ode to Mode 7 Competition
Replies: 43
Views: 7205

Re: Bitshifters - Ode to Mode 7 Competition

The compo does say "use & abuse of the MODE 7 character mapped display" so I think this counts. Would be a good showcase. What could be done with it?!
by kieranhj
Sat Sep 17, 2016 9:58 pm
Forum: 8-bit acorn software: classic games
Topic: Elite annotated source
Replies: 1
Views: 1726

Re: Elite annotated source

I think your links are the wrong way around but great find! I know the original sources were technically buildable, as they were in BASIC assembler, but maybe someone (Tom?!) fancies making these BeebAsm compatible..?
by kieranhj
Sat Sep 17, 2016 9:53 pm
Forum: past physical ABug events
Topic: LAST TWO PLACES AVAILIBLE FOR ABUG JANUARY 17
Replies: 7
Views: 2240

Re: LAST TWO PLACES AVAILIBLE FOR ABUG JANUARY 17

Hey Alex, Please can you take me off the Tentaive kit list as I can't commit at this point due to a new arrival to the wider family being "scheduled" somewhere in that timeframe! I don't want to block the space for anyone else. If I can come then I will enquire nearer the time whether there is space...
by kieranhj
Sat Sep 17, 2016 9:11 am
Forum: 8-bit acorn software: classic games
Topic: Exile disassembly
Replies: 29
Views: 6182

Re: Exile disassembly

Hmmm, opportunity for someone to write a general WAV -> Beeb PWM sample player? :) Now you all mention it, I do remember the samples in Exile being a lot louder than the sampled music demos that are available.
by kieranhj
Fri Sep 16, 2016 2:30 pm
Forum: 8-bit acorn software: classic games
Topic: Thrust Disassembly
Replies: 54
Views: 10785

Re: Thrust Disassembly

Tom's Exile disassembly has reminded me to publish this in GitHub: https://github.com/kieranhj/thrust-disassembly
by kieranhj
Fri Sep 16, 2016 10:43 am
Forum: programming
Topic: Bitshifters - Ode to Mode 7 Competition
Replies: 43
Views: 7205

Re: Bitshifters - Ode to Mode 7 Competition

This reminds me I need to check out Tom's "chunky mode 7" code snippets that he posted on RS a while back. Hmmm, does this count as MODE 7 for the purposes of our compo? :-k
by kieranhj
Thu Sep 15, 2016 8:29 pm
Forum: past events & exhibitions
Topic: Sophie Wilson talks Microprocessors at NMOC - 7pm Thursday 13 October
Replies: 5
Views: 1525

Re: Sophie Wilson talks Microprocessors at NMOC - 7pm Thursday 13 October

Hi Kieran, Snap, i'd like to but not possible for me, though I did find this as a result. https://www.youtube.com/watch?v=b5j_Y-ML3dg stew the monitor is still great btw! Good find Stew! Glad monitor still working and not gone up in smoke. :) We need to go for those beers - I'll send you a PM.
by kieranhj
Thu Sep 15, 2016 11:03 am
Forum: past events & exhibitions
Topic: Sophie Wilson talks Microprocessors at NMOC - 7pm Thursday 13 October
Replies: 5
Views: 1525

Sophie Wilson talks Microprocessors at NMOC - 7pm Thursday 13 October

Saw this on Twitter yesterday: http://www.tnmoc.org/news/upcoming-events/talks?platform=hootsuite Sophie Wilson Microprocessors in the 1980s, today and in the future Thursday 13 October 2016 at 7pm Sophie Wilson, co-designer of the BBC microprocessor and the chip in the vast majority of today's smar...
by kieranhj
Wed Sep 14, 2016 6:07 pm
Forum: 8-bit acorn software: other
Topic: Visual Studio Code Extension for BeebAsm
Replies: 7
Views: 1774

Re: Visual Studio Code Extension for BeebAsm

Awesome! Any chance you can put this together for those of us lucky enough to have full VS? :)
by kieranhj
Sun Sep 11, 2016 10:44 pm
Forum: programming
Topic: Bitshifters - Ode to Mode 7 Competition
Replies: 43
Views: 7205

Re: Bitshifters - Ode to Mode 7 Competition

As mentioned on FB we can provide you with the Exomizer exe for compression on PC side and then a ready to rumble 6502 decompression routine in BeebAsm format. Our goal is to encourage more people to make fun + cool stuff to show off what the Beeb is capable of and celebrate its heritage. We'll be s...
by kieranhj
Sat Sep 10, 2016 12:42 am
Forum: stardot FORUM
Topic: How about a Programming / Hints and Tips subforum?
Replies: 30
Views: 7818

Re: How about a Programming / Hints and Tips subforum?

We have hijacked (politely, mind, we are BBC enthusiasts after all) the GitHub.com/Stardot organisation as a potential successor to RS. For anyone that would like to be admin to help with archiving the old RS site and setting up the new Stardot developers site, please just let me know.
by kieranhj
Thu Sep 08, 2016 10:22 pm
Forum: stardot FORUM
Topic: How about a Programming / Hints and Tips subforum?
Replies: 30
Views: 7818

Re: How about a Programming / Hints and Tips subforum?

For those interested, we are discussing the logistics of the RetroSoftware wiki and the merits of GitHub over on RS: http://www.retrosoftware.co.uk/forum/vi ... f=3&t=1020
by kieranhj
Wed Aug 31, 2016 1:20 am
Forum: stardot FORUM
Topic: How about a Programming / Hints and Tips subforum?
Replies: 30
Views: 7818

Re: How about a Programming / Hints and Tips subforum?

Pinging this thread again after some productive conversations at the ABUG meet in Cambridge. Those are some good points Stephen - I've started a thread on RS asking that what people think over there. To be clear, our ideal goal would be to preserve all information but just host it somewhere (a) more...
by kieranhj
Wed Aug 31, 2016 12:39 am
Forum: 8-bit acorn hardware
Topic: things to do with a co-pro...
Replies: 5
Views: 956

Re: things to do with a co-pro...

This does also beg the question (maybe a separate thread) which is why there are so few copro applications available for the Beeb? I guess the copros were expensive and some of them fairly niche - perhaps for an audience of academics at Cambridge even. I suppose the 6502 copros ran most "serious" so...
by kieranhj
Wed Aug 31, 2016 12:30 am
Forum: 8-bit acorn hardware
Topic: things to do with a co-pro...
Replies: 5
Views: 956

Re: things to do with a co-pro...

We discussed this briefly, I'm interested in doing a ray casting engine on the copro and then do all the texture mapping on the host. Do all the maths copro side and then for each vertical column just send texture no, texture X index and height on screen (3 bytes) over the Tube. We'd still be massiv...
by kieranhj
Tue Aug 30, 2016 10:52 pm
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 also wanted to say thank you to the Jasons and everyone involved in organising and making the event possible. I really enjoyed my first ABug and will look forward to the next one (that's a reasonable distance away at least - sadly Bolton might be a stretch.) Being a software guy, I loved seeing al...
by kieranhj
Tue Aug 30, 2016 10:33 am
Forum: new projects and releases: demoscene
Topic: Bitshifters present Beeb Tracker - new VGM music demos!
Replies: 48
Views: 7869

Re: Bitshifters present Beeb Tracker - new VGM music demos!

Yes, we're wondering whether it is appropriate to become the "BBC Demo Archive" (cf. BBC Games Archive) without trying to appropriate / seemingly take credit for other people's work. All we want to do is celebrate the (sometime unappreciated) capabilities of this wonderful machine! :)
by kieranhj
Tue Aug 30, 2016 9:08 am
Forum: new projects and releases: demoscene
Topic: Bitshifters present Beeb Tracker - new VGM music demos!
Replies: 48
Views: 7869

Re: Bitshifters present Beeb Tracker - new VGM music demos!

Or, just set the load/exec addresses correctly to &FFFFxxxx. Good call, will get that sorted. Still need to check though as we're playing fast & loose with memory below PAGE - turns out Model B Acorn DFS doesn't use anything above &1100 if you're not keeping files open. Quite why they set PAGE at &...
by kieranhj
Mon Aug 29, 2016 11:10 pm
Forum: new projects and releases: demoscene
Topic: Bitshifters present Beeb Tracker - new VGM music demos!
Replies: 48
Views: 7869

Re: Bitshifters present Beeb Tracker - new VGM music demos!

Thanks! I forgot to add that these should all work on vanilla Model B and Master series. You might want to disable your Tube beforehand. I've only been able to test on my own Master hardware so please let me know if you have any compatibility problems and we'll get them addressed & patched.
by kieranhj
Mon Aug 29, 2016 10:45 pm
Forum: new projects and releases: demoscene
Topic: Bitshifters present Beeb Tracker - new VGM music demos!
Replies: 48
Views: 7869

Bitshifters present Beeb Tracker - new VGM music demos!

Hi everyone, Simonm (aka Scrubbly) and I are proud to announce our first production under the moniker of Bitshifters - a new collective for the BBC Micro with an aim to celebrate our love of this fine machine through the medium of demo coding and foster a community of enthusiasts and developers (but...
by kieranhj
Mon Aug 29, 2016 9:55 am
Forum: past physical ABug events
Topic: ABug EAST MIDLANDS 27-29 January 2017 (Leicestershire)
Replies: 130
Views: 22451

Re: ABug EAST MIDLANDS 27-29 January 2017 (Leicestershire)

Hey Alex, I had such a good time at the Cambridge meet this weekend, I'm sure I'll be needing my next ABug fix by January! As it's close to the M1 it doesn't look too difficult to get to from down my way. Please put me down on the Tentative list and I'll make some investigations as to what my calend...
by kieranhj
Sat Aug 20, 2016 7:44 pm
Forum: 8-bit acorn software: classic games
Topic: Second Processor Elite - How did it work?
Replies: 13
Views: 2604

Re: Second Processor Elite - How did it work?

I wrote an article about programming for the Tube: http://ffe3.com/tom/tube.html This is the 2nd draft (same goes for the rest of the site). The technical info is sound enough, but I'm not 100% happy about the writing... but it might prove interesting anyway. Hey Tom, this is great! Thanks for such...

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