Search found 1997 matches

by tricky
Sat Jan 20, 2018 7:02 pm
Forum: hardware
Topic: Connecting SEGA Mega Drive controllers to the beeb
Replies: 4
Views: 177

Re: Connecting SEGA Mega Drive controllers to the beeb

The idea is similar, but I am just using the circuit in the controller to pull the lines up and down and then, similar resistors to centre the voltage. I added an extra resistor to pull the voltage down to the range required by the ADC on the beeb (seemingly unnecessary on the dragon). I also use on...
by tricky
Sat Jan 20, 2018 9:01 am
Forum: hardware
Topic: Connecting SEGA Mega Drive controllers to the beeb
Replies: 4
Views: 177

Re: Connecting SEGA Mega Drive controllers to the beeb

Unfortunately, when I finished wiring the prototype, it was wrong! start_again.jpg When I first check the outputs from the joypad, I measured each button as 5v unpressed, dropping to 0v when pressed, as is normal with these things (pull up, short to ground). When I put it on the prototyping board, ...
by tricky
Thu Jan 18, 2018 8:22 pm
Forum: hardware
Topic: Newbie question regarding first machine
Replies: 16
Views: 440

Re: Newbie question regarding first machine

They did replace all the "illegal" ops with NOPs, but I didn't know if any had the same behaviour as an added op - probably not.
I believe (but haven't checked) that 6502 jmp (&xxFF) will read &xxFF and &xx00, rather than 65C02 &xxFF &yy00 where yy=xx+1.
by tricky
Thu Jan 18, 2018 8:00 pm
Forum: hardware
Topic: Fault finding index
Replies: 86
Views: 16925

Re: Fault finding index

Hoglet, sorry, I need to go back and read that thread, but does you software check reads from memory with "known" values to spot dodgy RAM etc?
by tricky
Thu Jan 18, 2018 7:58 pm
Forum: hardware
Topic: Newbie question regarding first machine
Replies: 16
Views: 440

Re: Newbie question regarding first machine

8. the Master runs faster Any idea why? ... I guess he means BASIC, but maybe some OS routines too as you know you have a 65C02 with a its few extra instructions which, can save spilling a register and in turn make a noticeable difference in a tight loop. For my stuff, I stick to "documented/l...
by tricky
Wed Jan 17, 2018 9:21 pm
Forum: introduce yourself
Topic: Hello from Greece.
Replies: 6
Views: 162

Re: Hello from Greece.

Welcome,
an Elk is a good place to start ;)
by tricky
Wed Jan 17, 2018 6:23 pm
Forum: hardware
Topic: How do Beebs break in transit?
Replies: 10
Views: 360

Re: How do Beebs break in transit?

I had four beebs and a master arrive all with broken cases and packaging smashed in with boot prints on the box! I have also had internal expansions loose, but they may have been that way and one with a broken key, again with badly marked packaging. I guess you might loose a track to a crack if the ...
by tricky
Wed Jan 17, 2018 6:18 pm
Forum: software: classic games
Topic: Does it exists a version of "Death race" for the beeb?
Replies: 4
Views: 230

Re: Does it exists a version of "Death race" for the beeb?

:oops: In this case, you could probably draw everything with user defined characters and EOR your car on and off to move it. Bounding boxes are probably OK for collision, so keeping an array should do. So, this might actually be "easy", not "tricky easy" ;) Disclaimer, I have nev...
by tricky
Tue Jan 16, 2018 11:32 pm
Forum: hardware
Topic: Newbie question regarding first machine
Replies: 16
Views: 440

Re: Newbie question regarding first machine

For myself, I prefer B+, B, compact and lastly master, but this is not what I would recommend for others. Compact is probably most expensive and least compatible. B is probably cheapest and most compatible. Sideways ram is cheap to add to a B, but is poorly supported. Master is a good compromise, co...
by tricky
Tue Jan 16, 2018 8:22 pm
Forum: software: classic games
Topic: Does it exists a version of "Death race" for the beeb?
Replies: 4
Views: 230

Re: Does it exists a version of "Death race" for the beeb?

I've never seen it, but as it only has one sprite IIRC, your right, it should be very easy, even from BASIC.
by tricky
Sun Jan 14, 2018 9:36 pm
Forum: programming
Topic: BeebAsm's Hello World - printing part of file name, not "Hello World"
Replies: 13
Views: 328

Re: BeebAsm's Hello World - printing part of file name, not "Hello World"

There were some additions last year (can't find the thread).
RichTW was working talking about a new version, but it didn't look very lightly.
by tricky
Sun Jan 14, 2018 9:29 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 54
Views: 1295

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

Batman the movie
Beach buggy simulator
More tea vicar (lots of particles)
Repton 1 and 2 ported by Gil who wrote Jeltron with me in the 80s.
No scrolling, but what does bomb Jack look like ;)
by tricky
Sun Jan 14, 2018 8:14 pm
Forum: hardware
Topic: Which replacement parts are available new?
Replies: 5
Views: 276

Re: Which replacement parts are available new?

6522s seem to be around.
It might be worth having a chat with Lazarus I think he is still making a 6502 homebrew and is quite familiar with the beeb.
by tricky
Sat Jan 13, 2018 8:50 pm
Forum: software: other
Topic: What version of Windows is best for running emulators, assemblers etc?
Replies: 5
Views: 264

Re: What version of Windows is best for running emulators, assemblers etc?

I use 7 for my stuff (see my sig), but the main local emulators (beebem and b-em) are both available for linux (I guess that's what your using) as is beebasm, which is the cross-assembler that quite a few of us use for making beeb projects. I have only tried SWIFT briefly, and don't let me put you o...
by tricky
Sat Jan 13, 2018 4:57 pm
Forum: introduce yourself
Topic: Greetings and salutations
Replies: 9
Views: 199

Re: Greetings and salutations

Welcome, I don't know of anyone who had built a beeb from scratch, other than I did see a couple of new old stock bare boards a few years back. I'm sure you have been scanning the threads already, but you might like to look at the Video NULA (new ULA) project (also used for SpectROM) as a modern rep...
by tricky
Sat Jan 13, 2018 1:57 am
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 54
Views: 1295

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

Well done Rob, more great work. Is the Pi fast enough to look for small areas of shifted/scrolled graphics and send a scroll command for an area? It could probably be optimised along th lines of a frame rate converter, but apart from paperboy, horizontal and vertical 1,2,4,8 pixels should cover it, ...
by tricky
Fri Jan 12, 2018 7:53 pm
Forum: software: new games
Topic: A new Warlords emulator for the beeb (was Writing a ...)
Replies: 51
Views: 4514

Re: A new Warlords emulator for the beeb (was Writing a ...)

To see my continuing adventures in connecting other system's controllers to the beeb, see this Connecting SEGA Mega Drive controllers to the beeb thread.
by tricky
Fri Jan 12, 2018 7:50 pm
Forum: hardware
Topic: Connecting SEGA Mega Drive controllers to the beeb
Replies: 4
Views: 177

Connecting SEGA Mega Drive controllers to the beeb

I have been looking at adding joystick support for when I take my games on the road and not really been very happy with any of the solutions. * I wanted something cheap (as they may walk or get broken and I might want quite a few). * be compatible with standard analogue sticks so that they could be ...
by tricky
Sun Jan 07, 2018 11:31 am
Forum: hardware
Topic: Broken Beeb - strange memory issue, what to try next?
Replies: 12
Views: 560

Re: Broken Beeb - strange memory issue, what to try next?

Well done and now you have a working spare.
by tricky
Fri Jan 05, 2018 9:32 pm
Forum: introduce yourself
Topic: Hello!
Replies: 10
Views: 251

Re: Hello!

Welcome, glad to have you on board.
I got my Elk a little after you, but you have had yours about 1,500 times longer than I had mine ;)
by tricky
Fri Jan 05, 2018 1:46 pm
Forum: archive submissions
Topic: 30th Anniversary BBC and Electron Collection
Replies: 387
Views: 31281

Re: 30th Anniversary BBC and Electron Collection

I don't know where you find the enthusiasm for this, but I'm glad you do. =D>
by tricky
Thu Jan 04, 2018 4:16 pm
Forum: software: new games
Topic: A new version of Phoenix for the BBC
Replies: 89
Views: 8816

Re: A new version of Phoenix for the BBC

OK, I don't remember it saying anything about distributing them when I looked before.
I should probably add a front page (if I don't already have one) showing the options with a note about mice and beeb emulators and I may even add basic keyboard support, RipCord certainly would be OK.
by tricky
Thu Jan 04, 2018 4:13 pm
Forum: wanted
Topic: Level 9 games
Replies: 5
Views: 210

Re: Level 9 games

I see, sorry, I should have realised as you did say "collection".
I'll have a look, I have quite a bit of beeb SW and a bit of Electron.
by tricky
Thu Jan 04, 2018 8:07 am
Forum: programming
Topic: 32k memory management for dummies
Replies: 28
Views: 762

Re: 32k memory management for dummies

I don't want to put you off at all, but it is possible to have a floppy and mmc, which usually means Dfs and an mmc (turbo mmc, smart spi, mmfs) which all have the same file system number "for compatibility". You can check which ROM slot by checking the extended vector table ROM entry for ...
by tricky
Thu Jan 04, 2018 7:46 am
Forum: software: new games
Topic: A new version of Phoenix for the BBC
Replies: 89
Views: 8816

Re: A new version of Phoenix for the BBC

You could call them circus emulator and ripcord emulator. The ROMs they use are on the mame sight available for free download, but don't actually give permission to distribute them. I did ask for permission, but it was after the person who started Exidy had died (I didn't know this at the time). If ...
by tricky
Wed Jan 03, 2018 10:58 pm
Forum: software: new games
Topic: A new version of Phoenix for the BBC
Replies: 89
Views: 8816

Re: A new version of Phoenix for the BBC

Acrobat TV is an alternate name for Circus.
by tricky
Wed Jan 03, 2018 10:55 pm
Forum: bbcmicro.co.uk
Topic: Should joystick/paddle only games be download-only
Replies: 10
Views: 280

Re: Should joystick/paddle only games be download-only

Sorry, I was thinking of the large play buttons on the game's page.
by tricky
Wed Jan 03, 2018 10:52 pm
Forum: programming
Topic: 32k memory management for dummies
Replies: 28
Views: 762

Re: 32k memory management for dummies

There are plenty of people here who know the os better than me, but maybe you could do something like: Load game Load level into screen memory (maybe changing to mode 7 while loading - see the code in my phoenix loader) *Tape Copy level down and play *Disc Load next level to screen ... There is the ...
by tricky
Wed Jan 03, 2018 10:42 pm
Forum: hardware
Topic: Think I'm loosing my (beeb) memory
Replies: 22
Views: 509

Re: Think I'm loosing my (beeb) memory

Great to hear.

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