Search found 607 matches

by Diminished
Tue Mar 02, 2021 1:15 pm
Forum: archive submissions
Topic: Teenage Mutant Hero Turtles World Tour
Replies: 14
Views: 786

Re: Teenage Mutant Hero Turtles World Tour

([...] the now-thankfully-delisted Xbox Live Arcade version of the first arcade game, which replaced all the original music with compositions from the 2003 television series and removed the speech samples) Hm. Was the XBLA version messed up like this right from its release, or did they have to patc...
by Diminished
Fri Feb 26, 2021 10:35 pm
Forum: archive submissions
Topic: Empire Strikes Back: oddity with Summer Olympiad, and possible source fragments
Replies: 3
Views: 196

Re: Empire Strikes Back: oddity with Summer Olympiad, and possible source fragments

Bizarre.

I love this stuff.

You'll probably find the Death Star plans themselves in some unused sectors at this rate.
by Diminished
Mon Feb 22, 2021 8:24 pm
Forum: off-topic
Topic: Electric Cars - A general discussion platform
Replies: 57
Views: 1213

Re: Electric Cars - A general discussion platform

I've never owned a car and I still just cycle everywhere. You can actually carry a surprising amount of load on a pedal bike equipped with a couple of pannier bags. I reckon I can get about 15 kg of shopping on my bike with properly inflated tyres, two pannier bags and possibly a rucksack as well. A...
by Diminished
Sat Feb 20, 2021 3:37 am
Forum: archive submissions
Topic: Winter Olympiad 88: 40T side mis-master, revealing copy protection 6522 simulator?!
Replies: 5
Views: 263

Re: Winter Olympiad 88: 40T side mis-master, revealing copy protection 6522 simulator?!

billcarr2005 wrote:
Fri Feb 19, 2021 4:06 pm
I've managed to piece together the complete program.
Well played, Bill. =D>

Is this the sort of tool one would use to encrypt something that would be decrypted at runtime by VIA timer nonsense?
by Diminished
Thu Feb 18, 2021 1:13 am
Forum: 8-bit acorn emulators
Topic: beebjit-0.9.5 release: a story in pictures
Replies: 12
Views: 708

Re: beebjit-0.9.5 release: a story in pictures

Well done, Chris. I'm looking forward to having a shufti at that scripting language. It will hopefully help with various reversing tasks that previously I've just tackled by hacking some check into the emulator code itself and recompiling. Is the Apple M1 really faster than the latest Intel? The onl...
by Diminished
Fri Feb 12, 2021 9:39 pm
Forum: 8-bit acorn hardware
Topic: Forty years ago...
Replies: 77
Views: 2502

Re: Forty years ago...

ash73 wrote:
Fri Feb 12, 2021 10:58 am
Why didn't the BBC just produce a hardware and software spec, that anyone could build?
The ULAs would have complicated this idea, too -- you'd likely just have gone from a single supplier building the entire machine, to a single supplier producing the custom chips instead.
by Diminished
Fri Feb 12, 2021 9:37 pm
Forum: archive submissions
Topic: Citadel, standalone disc, Master compatible
Replies: 5
Views: 313

Re: Citadel, standalone disc, Master compatible

With thanks to billcarr, attached is another unusual Citadel. It's a "sample" disc. Perhaps it's the same as the "early" or "pre-release" Citadels floating around such as http://bbcmicro.co.uk/game.php?id=2396 or the one in the STH. Unlike the "early" / "...
by Diminished
Fri Feb 12, 2021 3:01 am
Forum: archive submissions
Topic: Citadel, standalone disc, Master compatible
Replies: 5
Views: 313

Re: Citadel, standalone disc, Master compatible

Related, I just accidentally noticed the Citadel notes at https://www.stairwaytohell.com/cheats/hacman/hacman-v8n6-b-L.jpg, while researching Perplexity. It goes a bit into how Citadel was ported to the Master, and who did it. "All the illegal things" is a tiny bit specious... Rich TW act...
by Diminished
Sun Feb 07, 2021 12:24 pm
Forum: archive submissions
Topic: Citadel, standalone disc, Master compatible
Replies: 5
Views: 313

Re: Citadel, standalone disc, Master compatible

Nice. More history!
by Diminished
Fri Jan 22, 2021 10:04 am
Forum: 8-bit acorn software: other
Topic: Discbeast, new disc and archival utility -- NEED VOLUNTEERS
Replies: 102
Views: 6765

Re: Discbeast, new disc and archival utility -- NEED VOLUNTEERS

Arcadian wrote:
Fri Jan 22, 2021 7:40 am
Here (finally) is scarybeasts' talk about Discbeast from the October 2020 Virtual ABug event:
Thanks Arc. Been hoping for this one.
by Diminished
Tue Jan 19, 2021 10:48 pm
Forum: introduce yourself
Topic: Hi from Nottingham
Replies: 7
Views: 283

Re: Hi from Nottingham

lushprojects wrote:
Tue Jan 19, 2021 8:20 pm
Grid Runner
Beebug
Hey, I remember this. They bundled it on their demo disc.
grid_runner.jpg
by Diminished
Tue Jan 19, 2021 6:31 pm
Forum: introduce yourself
Topic: Hi from the Netherlands
Replies: 9
Views: 333

Re: Hi from the Netherlands

Hello!
by Diminished
Sat Jan 09, 2021 8:47 pm
Forum: modern implementations of classic programming languages
Topic: Idea: Fastest Conway's Game of Life in BBC Basic
Replies: 45
Views: 1042

Re: Idea: Fastest Conway's Game of Life in BBC Basic

Very neat!

I have nothing to add except a tangent, but in case anyone hasn't seen them before, Chapters 17 and 18 of Michael Abrash's venerable Graphics Programming Black Book tackle ways to optimise Life (although this was all on x86 CPUs).
by Diminished
Mon Jan 04, 2021 10:48 pm
Forum: 8-bit acorn software: classic games
Topic: The BBC Micro chess championship.
Replies: 49
Views: 2064

Re: The BBC Micro chess championship.

scarybeasts wrote:
Mon Jan 04, 2021 10:26 pm
Acornsoft Chess computer level 9 thinks for 10 hours virtual time without making a move, and the clock wraps back to 0:00:00.
Human player dies of old age. Computer wins by default. Clever.
by Diminished
Sat Jan 02, 2021 11:04 am
Forum: 8-bit acorn software: classic games
Topic: Unused Citadel bits
Replies: 118
Views: 17934

Re: Unused Citadel bits

Its interesting to play Crypt Capers - a game by the same author: http://bbcmicro.co.uk//jsbeeb/play.php?autoboot&disc=http://bbcmicro.co.uk//gameimg/discs/2384/DiscA01-PyramidAKACryptCapers.ssd&noseek It looks very much like Citadel was Crypt Capers 2 - many of the sprites look very simila...
by Diminished
Fri Jan 01, 2021 12:57 pm
Forum: off-topic
Topic: A funky goodbye to 2020
Replies: 14
Views: 608

Re: A funky goodbye to 2020

Let's make 2021 the Year of the Dongle! :wink: If the Chinese can name years after animals surely we can name them after retro computer bits. :lol: What does that make 2020? The year of the Sinclair ZX Microdrive? 2020 was beyond awful. We did get to tackle the 8271 and extract enough information a...
by Diminished
Wed Dec 30, 2020 11:31 am
Forum: 8-bit acorn software: classic games
Topic: Unused Citadel bits
Replies: 118
Views: 17934

Re: Unused Citadel bits

I did cross-post about this in the archives section , in the hope that someone who has experience dealing with vintage discs in unknown condition might volunteer for the job. I know there are people here who have done this before. I would love to do it myself, but I can't be trusted not to screw it ...
by Diminished
Sun Dec 27, 2020 10:47 am
Forum: archive submissions
Topic: Citadel
Replies: 0
Views: 236

Citadel

Hi,

I'm just cross-posting this here to draw attention to this post, to encourage anyone who has equipment and experience in archiving old discs in an unknown state of repair. (Hopefully nothing is rotten in the state of Denmark.)

I'd like to see this happen.

D
by Diminished
Fri Dec 25, 2020 6:17 am
Forum: 8-bit acorn software: classic games
Topic: Unused Citadel bits
Replies: 118
Views: 17934

Re: Unused Citadel bits

From Acorn: A World in Pixels:
jakobsen.jpg
I think we need to try to make this happen, don't we?

I have zero social media presence by design. I don't know whether anyone else has a way of reaching Mike Jakobsen, or maybe it could be done via the people who published the book?
by Diminished
Wed Dec 23, 2020 4:49 am
Forum: introduce yourself
Topic: Oh wow, this place is brilliant!
Replies: 9
Views: 454

Re: Oh wow, this place is brilliant!

Yeah, it's pretty good.

The machine's not bad either.

Welcome.
by Diminished
Sat Dec 19, 2020 2:28 pm
Forum: software & utilities for the pc, mac or unix
Topic: Exile remix Best of both worlds
Replies: 3
Views: 289

Re: Exile remix Best of both worlds

Chuckie wrote:
Sat Dec 19, 2020 1:12 pm
https://twitter.com/i/status/1339352888330563587

Upgrades Exile integrated with emulator

Best of both world
How great Beeb game design was.
Blimey. :shock:
by Diminished
Fri Dec 18, 2020 11:22 am
Forum: 8-bit acorn hardware
Topic: Write-up of Western Security floppy disc protection
Replies: 11
Views: 796

Re: Write-up of Western Security floppy disc protection

We'd need to believe the duplicator's drive has surprising precision for 1985, but the PDF linked above does bang on and on about quality. It certainly talks the talk; it sounds like the custom drive electronics check not only the digital signal but also the analog one. I need to read the PDF, but ...
by Diminished
Wed Dec 16, 2020 3:06 pm
Forum: 8-bit acorn software: classic games
Topic: Repton 3 "Now" Screen H
Replies: 17
Views: 3384

Re: Repton 3 "Now" Screen H

resurrecting old threads policy The policy is that it's encouraged. :lol: OK, I wasn't aware of this thread before. It's pretty interesting. You may or may not be aware that some investigations took place quite recently related to differences between a couple of different disc Repton 3 versions (wh...
by Diminished
Tue Dec 15, 2020 3:00 am
Forum: 8-bit acorn hardware
Topic: Write-up of Western Security floppy disc protection
Replies: 11
Views: 796

Re: Write-up of Western Security floppy disc protection

I've often wondered about this -- specifically whether any floppy protection methods included anything that was written uniquely on a per-disc basis. It seems this idea was used less commonly than I expected it might have been. I remember Kevin Edwards talking a couple of times on this forum about a...
by Diminished
Sat Dec 12, 2020 5:18 am
Forum: modern implementations of classic programming languages
Topic: Unexpected difference between Linux and Windows
Replies: 9
Views: 400

Re: Unexpected difference between Linux and Windows

It's funny how even the most basic of C functions can have different implementations. I know that on some platforms (can't remember specifics now), fread() will block until it can give you the number of bytes you asked for. On others it prefers to return early with a lesser number of bytes than you ...
by Diminished
Thu Dec 10, 2020 2:04 am
Forum: other vintage hardware, software and languages
Topic: Heathkit Oscilloscope IO-12U
Replies: 5
Views: 368

Re: Heathkit Oscilloscope IO-12U

flaxcottage wrote:
Tue Dec 08, 2020 8:03 pm
In the end I designed and build my own based on a 3BP1 CRT salvaged from a WW2 aircraft indicator unit and using ex-television valves.
This is the most effortlessly cool sentence I have ever read in my life.
by Diminished
Sat Dec 05, 2020 2:27 am
Forum: introduce yourself
Topic: Hello
Replies: 27
Views: 3250

Re: Hello

I have to say, the Idesine book is magnificent. It's been a catalyst for Reuben to decompile Starquake and for us to take a look at righting some of the wrongs - specifically, some of the features I had to remove due to memory issues, with a few decades' programming experience between us, we can fi...
by Diminished
Fri Dec 04, 2020 10:21 pm
Forum: 8-bit acorn software: other
Topic: OS 0.1 CFS patch
Replies: 9
Views: 523

Re: OS 0.1 CFS patch

Rich Talbot-Watkins wrote:
Fri Dec 04, 2020 10:11 pm
This is totally new to me. Was this instead of Ctrl+Break on OS 0.10?
It was. I don't know why they changed it. Maybe an accessibility thing, maybe because it was destroying BREAK keys.

It was more fun, though.
by Diminished
Fri Dec 04, 2020 9:13 pm
Forum: 8-bit acorn software: other
Topic: OS 0.1 CFS patch
Replies: 9
Views: 523

Re: OS 0.1 CFS patch

Acorn User certainly published the fix https://archive.org/details/AcornUser009-Apr83/page/n59/mode/2up BEEBUG 1-4 had it, too (by a certain R.T.R.): http://8bs.com/othrdnld/beebug/scans/BeebUGv0104.zip Furthermore, issue 1-7 provided a scheme for recovering existing programs that had been mangled ...

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