Search found 235 matches

by ctr
Tue Jan 19, 2021 6:16 pm
Forum: programming
Topic: Circle floodfill ideas?
Replies: 56
Views: 1227

Re: Circle floodfill ideas?

I guess it's possible the Master is using a different algorithm, or there is some kind of rounding going on. Bresenham circles are, I think, slightly more pleasing if you use (R+0.5) or (R-0.5) as the radius. The half gets doubled in the formula so you're still doing integer arithmetic. It could be...
by ctr
Wed Dec 02, 2020 6:41 pm
Forum: stardot FORUM
Topic: List of Acorn/BBC related websites
Replies: 36
Views: 19411

Re: List of Acorn/BBC related websites

I don't know who they are but they've been slowly releasing a bunch of old Acorn source code and documentation:

4corn Computers
by ctr
Sat Sep 12, 2020 7:42 pm
Forum: development tools
Topic: BeebAsm
Replies: 131
Views: 18723

Re: BeebAsm

That would be great, thank you.
by ctr
Sat Sep 12, 2020 4:52 pm
Forum: development tools
Topic: BeebAsm
Replies: 131
Views: 18723

Re: BeebAsm

LineParser::GetValue sees the dot and thinks it is a floating point number. istringstream is used to parse the number and it fails, as expected, returning the value 0. This causes it to report the new stream position as -1, which gets cast to an unsigned value of 0xffffffff, so beebasm thinks it has...
by ctr
Sat Sep 05, 2020 8:12 pm
Forum: programming
Topic: A new BBC Micro MOS Reassembly
Replies: 32
Views: 2332

Re: A new BBC Micro MOS Reassembly

This is really nice.
dominicbeesley wrote:
Mon Aug 31, 2020 11:45 am
If not no worries I'll write a script to convert assemble and produce a listing file.
I wrote a hacky awk script to convert it to beebasm format. The script and the resultant symbol file are attached.
by ctr
Mon Mar 16, 2020 11:08 pm
Forum: off-topic
Topic: Acorn Art Thread
Replies: 2024
Views: 163467

Re: Acorn Art Thread

I didn't notice you'd got it working until I'd nearly finished changing it to run on .net core. So in theory it should run natively on macOS now. Note that the instructions are quite different.

The animated bus works fine using the old version on Windows and using the new version.
by ctr
Sun Mar 15, 2020 6:43 pm
Forum: off-topic
Topic: Acorn Art Thread
Replies: 2024
Views: 163467

Re: Acorn Art Thread

Yes, it's this one: https://stardot.org.uk/forums/download/file.php?id=54199&mode=view That gif works fine for me on Windows 10. The failing line of code is the one I thought might have a problem with a static gif because it reads the inter-frame delay: byte frameDelay = (byte)(ushort)((BitmapM...
by ctr
Sun Mar 15, 2020 5:47 pm
Forum: off-topic
Topic: Acorn Art Thread
Replies: 2024
Views: 163467

Re: Acorn Art Thread

Any idea what's wrong? Silly question, is it an animated gif? A non-animated one might confuse it. Or edit the compilation line in build.bat to read: %CSC% -debug -define:DEBUG -out:bin\img2beeb.exe src\Program.cs src\Properties\AssemblyInfo.cs -reference:WPF\WindowsBase.dll -reference:WPF\Presenta...
by ctr
Sun Mar 15, 2020 3:37 pm
Forum: off-topic
Topic: Acorn Art Thread
Replies: 2024
Views: 163467

Re: Acorn Art Thread

In 2018 pixelblip started making animated images, and, again, somehow -- how?! -- a few of them were converted , by ctr, into a format that could be played on a real Beeb (or in emulation). :shock: =D> =D> I did a little tidying and uploaded my code to github: https://github.com/mungre/img2beeb The...
by ctr
Sun Feb 10, 2019 9:05 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R3 - Boffin
Replies: 118
Views: 9158

Re: High Score Challenge S11 - R3 - Boffin

Level 18! This thing is a time vampire.
by ctr
Sun Feb 10, 2019 8:09 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R3 - Boffin
Replies: 118
Views: 9158

Re: High Score Challenge S11 - R3 - Boffin

Finally did 13 with only one life lost, straight through 14, floundered on 15.
by ctr
Sat Feb 09, 2019 12:39 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R3 - Boffin
Replies: 118
Views: 9158

Re: High Score Challenge S11 - R3 - Boffin

KarateEd wrote:
Sat Feb 09, 2019 6:39 am
..and got to the funky 'stick' level. Almost got it done
That's what I thought!
by ctr
Fri Feb 08, 2019 4:40 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R3 - Boffin
Replies: 118
Views: 9158

Re: High Score Challenge S11 - R3 - Boffin

Still level 13. I can do the hard bit, but not the really hard bit.
by ctr
Thu Feb 07, 2019 4:45 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R3 - Boffin
Replies: 118
Views: 9158

Re: High Score Challenge S11 - R3 - Boffin

I can't figure out how to get the tripod and still finish level 11, but I can get all the horseshoes now. 12 was OK, 13 requires a great deal of precision. Which I failed at.
by ctr
Wed Feb 06, 2019 8:49 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R3 - Boffin
Replies: 118
Views: 9158

Re: High Score Challenge S11 - R3 - Boffin

Level 11 is fiendish. It seems to have two things that need to be done last.
by ctr
Tue Feb 05, 2019 7:42 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R3 - Boffin
Replies: 118
Views: 9158

Re: High Score Challenge S11 - R3 - Boffin

I wasn't going to play again today but then I was waiting for my dinner to cook...

Level 10: 120,560
by ctr
Tue Feb 05, 2019 5:47 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R3 - Boffin
Replies: 118
Views: 9158

Re: High Score Challenge S11 - R3 - Boffin

I had this back in the day but it never appealed. Liking it so far though.

48,755
by ctr
Mon Jan 28, 2019 6:56 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R2 - Arcadians
Replies: 41
Views: 4296

Re: High Score Challenge S11 - R2 - Arcadians

Only a small bump. I've been trying a different playing style - only shooting the attackers - and it's taken me a week to beat my old score.

5,360
by ctr
Tue Jan 22, 2019 6:46 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R2 - Arcadians
Replies: 41
Views: 4296

Re: High Score Challenge S11 - R2 - Arcadians

I got to level 4 but only 4,840. I guess flying ones score more?
by ctr
Tue Jan 22, 2019 6:21 pm
Forum: the complete BBC games archive
Topic: Downloading ssds
Replies: 19
Views: 2606

Re: Downloading ssds

No, Apache can do content-type for you. You just need to tell it that ssd files have mime type application/vnd.acorn.disc-image.ssd (or application/octet-stream if you prefer). I haven't used Apache in years but a quick Google suggests you need to add this to a config file: AddType application/vnd.a...
by ctr
Tue Jan 22, 2019 5:34 pm
Forum: the complete BBC games archive
Topic: Downloading ssds
Replies: 19
Views: 2606

Re: Downloading ssds

On Windows 10 it works fine for me in Firefox but Edge is guessing the type because the response doesn't have a content-type header. The generic content-type for "this is a binary blob so don't try to display it" is "application/octet-stream". Alternatively, Tom Seddon is using &...
by ctr
Mon Jan 14, 2019 8:39 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R1 - Donkey Kong Jr.
Replies: 87
Views: 7145

Re: High Score Challenge S11 - Donkey Kong Jr.

Cheers. For me it was actually the first screen the second time through. I'd had an absolutely blinding run hitting loads of enemies with fruit and then I threw it all away! I've completed that level once before but my score was nowhere near as good.
by ctr
Mon Jan 14, 2019 8:14 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R1 - Donkey Kong Jr.
Replies: 87
Views: 7145

Re: High Score Challenge S11 - Donkey Kong Jr.

fwibbler wrote:
Mon Jan 14, 2019 8:01 pm
Had an amazingly good run (by my standards) and then lost all my lives(about 3) on the same level! :oops:
Ditto. I also thought this will give me a clear lead over fwibbler...

37,100
by ctr
Wed Jan 09, 2019 11:40 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R1 - Donkey Kong Jr.
Replies: 87
Views: 7145

Re: High Score Challenge S11 - Donkey Kong Jr.

I decided to have just one more go...

17,800
by ctr
Tue Jan 08, 2019 10:35 pm
Forum: 8-bit acorn software: games - high scores
Topic: High Score Challenge S11 - R1 - Donkey Kong Jr.
Replies: 87
Views: 7145

Re: High Score Challenge S11 - Donkey Kong Jr.

I didn't know this was a thing on the beeb. It's a bit tricky.

7,200
by ctr
Tue Jan 08, 2019 3:53 pm
Forum: off-topic
Topic: Xilinx lawyers
Replies: 15
Views: 1645

Re: Xilinx lawyers

It's worth remembering that this is a dispute in America governed by American law. The law is different in the UK. For example, "fair use" is not a thing, but the use of a trade mark in an educational video is not a protected use anyway. Of course, if you post content on American sites you...
by ctr
Mon Jan 07, 2019 4:48 pm
Forum: archive issues
Topic: Retro Software website down
Replies: 31
Views: 4067

Re: Retro Software website down

Thank you! It is a useful reference.
by ctr
Fri Jan 04, 2019 12:51 am
Forum: 8-bit acorn hardware
Topic: Solidisk RTC
Replies: 5
Views: 713

Re: Solidisk RTC

Another random guess using only reads: a read of &BExx latches xx, then a read of &BFyy writes yy to cmos address xx. Stephen's method does look simpler though.

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