Search found 2090 matches

by tricky
Sun Feb 18, 2018 6:24 pm
Forum: projects
Topic: Making reasonable progress with a Sudoku solver
Replies: 4
Views: 119

Re: Making reasonable progress with a Sudoku solver

Very nice, and twice as fast as my C++ one running on a laptop! :oops:
by tricky
Sun Feb 18, 2018 6:09 pm
Forum: development tools
Topic: Couple of BeebASM usage questions.
Replies: 10
Views: 234

Re: Couple of BeebASM usage questions.

I have a build.bat that does this in a subroutine with parameters: if exist copy.ssd del copy.ssd ren game.ssd copy.ssd ..\tools\beebasm.exe -i game.asm -di copy.ssd -do game.ssd Whatever game.ssd SAVEs will be added to game.ssd. I use this to build the self extracting compressed ROMs that the newes...
by tricky
Sun Feb 18, 2018 12:08 pm
Forum: hardware
Topic: Open Source Logic Analyzer Experiments
Replies: 132
Views: 5871

Re: Open Source Logic Analyzer Experiments

Looks like b7 is incorrectly set when a0 is 0 in the lower banks and one of the bits is stuck on in the high banks.
You can run the test in an emulator to see what it should look like.
by tricky
Fri Feb 16, 2018 7:16 pm
Forum: emulators
Topic: B-Em
Replies: 277
Views: 13407

Re: B-Em

I did post visual studio project and solution files along with a few minor changes to build on Windows, but I'm not sure where that was.
The biggest problem was finding the correct versions of the libraries, but otherwise it was fine.
by tricky
Fri Feb 16, 2018 2:04 pm
Forum: general
Topic: Remarkable videos recently posted on Youtube
Replies: 138
Views: 12742

Re: Remarkable videos recently posted on Youtube

Who is this 'Richard Broadhurst" bloke :D
by tricky
Fri Feb 16, 2018 11:18 am
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 113
Views: 3291

Re: SpectROM - Speccy emulator for the Pi co-pro

I was hoping that NuLA could control it and that a NuLA reset could be used to reset the frame, but I guess not.
by tricky
Fri Feb 16, 2018 10:56 am
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 113
Views: 3291

Re: SpectROM - Speccy emulator for the Pi co-pro

It's only interlace, but the user manually has to choose to swap the fields if they are the wrong way around unless some one has found a way to detect which field is showing.
Rob, does NuLA know which field is showing/can it set it?
by tricky
Thu Feb 15, 2018 1:32 pm
Forum: development tools
Topic: Couple of BeebASM usage questions.
Replies: 10
Views: 234

Re: Couple of BeebASM usage questions.

There is a command line option to export the symbols, I think in swift format, it's easily posted, I do this to export so that beebem, load them for debugging. You can save multiple files by having multiple SAVE statements or by using the template option to load a disc image and then add to it, this...
by tricky
Wed Feb 14, 2018 10:31 pm
Forum: hardware
Topic: Myelin's in-system updateable MegaROM for the BBC Master 128
Replies: 14
Views: 594

Re: Myelin's in-system updateable MegaROM for the BBC Master 128

If the blue thing was in a riser with long legs, would the extra couple of mm be enough?
by tricky
Wed Feb 14, 2018 5:08 pm
Forum: introduce yourself
Topic: Hi from uh, me :)
Replies: 8
Views: 191

Re: Hi from uh, me :)

Welcome, look out for the STH (Stairway to Hell - sister site) archive with a menu suitable for MMC installations, or the newly available version for DataCentre, assuming you have/get one or the other.
by tricky
Wed Feb 14, 2018 6:58 am
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 113
Views: 3291

Re: SpectROM - Speccy emulator for the Pi co-pro

Yes.
I found one of my sprint videos for what it sounds like.


http://youtu.be/enupZbjSNck

PS it doesn't sound quite like I remember it, in my head it was more like manic miner.
by tricky
Tue Feb 13, 2018 8:25 pm
Forum: introduce yourself
Topic: new to BBC
Replies: 11
Views: 214

Re: new to BBC

Welcome, glad youg found us.
by tricky
Tue Feb 13, 2018 8:20 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 113
Views: 3291

Re: SpectROM - Speccy emulator for the Pi co-pro

I've only done it from assembler, remember to set the sound volume to silent and I'm not sure if the conversion rate of clicks per second to frequency, but it might be ok. IIRC I used it for the engine noise in my sprint emulator.
by tricky
Tue Feb 13, 2018 8:10 pm
Forum: introduce yourself
Topic: Hi from foxtrotter
Replies: 7
Views: 162

Re: Hi from foxtrotter

Welcome, and glad to hear you are enjoying your visits.
by tricky
Tue Feb 13, 2018 1:20 pm
Forum: off-topic
Topic: Dodgy PSUs from China
Replies: 4
Views: 333

Re: Dodgy PSUs from China

I did notice that some of the cheap PSUs have a warning that they were built as part of a "project", which a guess means by some kind of students or home build returns!
by tricky
Tue Feb 13, 2018 1:18 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 113
Views: 3291

Re: SpectROM - Speccy emulator for the Pi co-pro

Rob, have you tried using "periodic noise" with the frequency controlled by the sound channel for lower frequencies?
by tricky
Tue Feb 13, 2018 1:15 pm
Forum: emulators
Topic: Latest version of BeebEm
Replies: 28
Views: 2891

Re: Latest version of BeebEm

I didn't see it mentioned, but the sound desync's from the video in the recorded AVI if vsync is disabled, I haven't checked when not disabled, but I guess as no one has mentioned it, it is probably OK. This maybe just my video editing software. Locally, I save and reload watches and breakpoints as ...
by tricky
Tue Feb 13, 2018 8:14 am
Forum: hardware
Topic: BBC Master noob
Replies: 48
Views: 1117

Re: BBC Master noob

That picture looks like a B.
It's quite easy to add a socket to the beeb so that the internal speaker is disconnected when you plug something in. I do all my Beebs and many my SCART leads with a plug for audio, very hand for when the volume at a show keeps changing.
by tricky
Mon Feb 12, 2018 4:19 pm
Forum: software: games - high scores
Topic: keyboards on PC to play games: Ignored keys with other keys pressed
Replies: 13
Views: 329

Re: keyboards on PC to play games: Ignored keys with other keys pressed

I don't know about linux, but I checked A+Z+RETURN on half a dozen keyboards running windows, none would pass on the RETURN in an editor or using the "higher level" APIs, but all would give RETURN using the lower level messages. I suspect that you can get A+Z+RETURN with the "right&qu...
by tricky
Sun Feb 11, 2018 8:04 am
Forum: hardware
Topic: Screen shadow memory
Replies: 18
Views: 523

Re: Screen shadow memory

I support it for loading samples in AstroBlaster, detecting it by looking for the ROM signature, but that's all.
by tricky
Sat Feb 10, 2018 4:28 pm
Forum: general
Topic: Remarkable videos recently posted on Youtube
Replies: 138
Views: 12742

Re: Remarkable videos recently posted on Youtube

I'm not sure about recent or remarkable, but I was watching EEVBLOG this morning about how PC joysticks worked and noticed a few beeb mentions/overlays which suggest he may be a fan, at least of the electronics.

by tricky
Sat Feb 10, 2018 4:04 pm
Forum: off-topic
Topic: Dodgy PSUs from China
Replies: 4
Views: 333

Dodgy PSUs from China

Our DVD player recently suffered a catastrophic failure in the high voltage side of the PSU, so after seeing several components with exhaust marks on the PSU i decided that I would order a cheap replacement from China. The first one arrived, I had splashed out a whole £4 after deciding that the £2 o...
by tricky
Thu Feb 08, 2018 10:57 pm
Forum: software: games - high scores
Topic: keyboards on PC to play games: Ignored keys with other keys pressed
Replies: 13
Views: 329

Re: keyboards on PC to play games: Ignored keys with other keys pressed

Sorry, I didn't notice who had posted. I think the OS is "protecting you" from possible clashes. If you use DirectInput (just a wrapper on Win32) on windows, you can read A+Z+RETURN, but with normal input, the 2 (3?) key rollover holds onto the RETURN until one of the first two keys have b...
by tricky
Thu Feb 08, 2018 8:47 pm
Forum: software: games - high scores
Topic: keyboards on PC to play games: Ignored keys with other keys pressed
Replies: 13
Views: 329

Re: keyboards on PC to play games: Ignored keys with other keys pressed

Most keyboards including the beeb work by having the switches in a grid (matrix) and then for say each row, checking which columns have keys pressed. With this arrangement, if you press three keys on the corners of a rectangle, the fourth key will also be "pressed". Try this on the beeb, t...
by tricky
Thu Feb 08, 2018 12:47 am
Forum: introduce yourself
Topic: hello from Leuchars
Replies: 8
Views: 173

Re: hello from Leuchars

Welcome, you can play nearly all the beeb classics at bbcmicro.co.uk and there are some new ones there too :)
by tricky
Thu Feb 08, 2018 12:44 am
Forum: introduce yourself
Topic: New Member West London
Replies: 8
Views: 153

Re: New Member West London

Welcome, looking forward to hearing about your treasure.
Did we chat at a RISCOS show a few years back?
Richard
by tricky
Thu Feb 08, 2018 12:41 am
Forum: software: new games
Topic: New version of Centipede for the BBC Micro (in progress)
Replies: 22
Views: 1456

Re: New version of Centipede for the BBC Micro (in progress)

Thanks Commie_User, I don't have pause in any of my games, but as I'm not after your 10p pieces, maybe, but it would take some of the skill away.
The trick with the shots is not to miss and keep calm, it would be too easy with rapid shots, not to mention not authentic ;)
by tricky
Wed Feb 07, 2018 8:36 pm
Forum: hardware
Topic: Atari joystick interface for BBC Micro?
Replies: 10
Views: 249

Re: Atari joystick interface for BBC Micro?

There is a short discussion in my thread about interfacing Sega Mega Drive controllers, where someone has a fairly simple design for the Dragon32 that would translate quite easily to the beeb. I have knocked up a designs in KiCad for Atari and Sega and have been dithering about ordering some PCBs. I...
by tricky
Wed Feb 07, 2018 1:46 pm
Forum: hardware
Topic: BBC controlled CD Jukebox, great find but need the space!
Replies: 49
Views: 2754

Re: BBC controlled CD Jukebox, great find but need the space!

I installed some of each of those wall boxes as well as "Arbiter" wall boxes and standalones while working for Associated Leisure based in Dawlish Warren in the late 80s.
by tricky
Wed Feb 07, 2018 8:20 am
Forum: hardware
Topic: Open Source Logic Analyzer Experiments
Replies: 132
Views: 5871

Re: Open Source Logic Analyzer Experiments

I think I get you, when not powered by USB?