Search found 2460 matches

by tricky
Sat Jun 23, 2018 5:55 am
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 43
Views: 592

Re: (Yet another) Memory Question

None out of about 17 beebs.
My first five or so had no faults.
A few have had 74 logic failures.
Some have ram issues and one had an ADC issue, but there was evidence that something had been soldered to the top of most of the legs.
by tricky
Fri Jun 22, 2018 6:43 pm
Forum: hardware
Topic: BBC Master 6522 VIA
Replies: 4
Views: 131

Re: BBC Master 6522 VIA

You could try driving the printer port and I think that snapper or something like that uses the user via's timer.
by tricky
Fri Jun 22, 2018 6:46 am
Forum: introduce yourself
Topic: Hello from Charlottesville, VA, USA!
Replies: 15
Views: 332

Re: Hello from Charlottesville, VA, USA!

Well done.
Lifting tracks is quite annoying, but at least they are on the opposite side to the component.
by tricky
Thu Jun 21, 2018 12:38 pm
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 48
Views: 2706

Re: New version of Scramble for the beeb (going well)

And we apparently had it good. Some dev's from bitd have said that they cross compiled from the Beeb (mostly spectrum from memory).
by tricky
Thu Jun 21, 2018 6:21 am
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 48
Views: 2706

Re: New version of Scramble for the beeb (going well)

Gil and I did jeltron with the basic assembler and we did have some funky stuff. Debugging stuff took ages and was mostly pawing over the code until we saw what was wrong. We also didn't have RichTW to explain vertical rupture, although I did something similar which only worked on a few TVs as it ha...
by tricky
Wed Jun 20, 2018 10:38 pm
Forum: software: new games
Topic: Atomic AGD
Replies: 58
Views: 3080

Re: Atomic AGD

Great work guys, keep it up.
by tricky
Wed Jun 20, 2018 10:13 pm
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 43
Views: 592

Re: (Yet another) Memory Question

It has done that to me on a couple of occasions ;)
by tricky
Wed Jun 20, 2018 11:15 am
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 48
Views: 2706

Re: New version of Scramble for the beeb (going well)

Thanks,
If someone had sehen me a PC, visual studio and a couple of emulators I probably would have ;)
These are on my list of things to do if I ever acquire a time machine.
People might have POPed when they saw your stuff too ;)
by tricky
Wed Jun 20, 2018 11:10 am
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 43
Views: 592

Re: (Yet another) Memory Question

I think I only posted the version in the thread linked above which does the mode 7+LEDs+relays+sound, then goes into mode 0 for but checking. Making it more sophisticated and adding error reporting are on the list, it will probably get a version and who knows maybe a checksum if I every get time. Fo...
by tricky
Wed Jun 20, 2018 10:59 am
Forum: hardware
Topic: My Turbo MMC Misadventures
Replies: 20
Views: 427

Re: My Turbo MMC Misadventures

I have never added a turned pin socket to anything and the one thing in my Beeb with one has a sacrificial non turned one betweestred the beeb's socket. I just wanted to do the translation of duickie's post. I know plenty of experience hardware people on here use turned pin sockets, I personally don...
by tricky
Wed Jun 20, 2018 6:36 am
Forum: hardware
Topic: My Turbo MMC Misadventures
Replies: 20
Views: 427

Re: My Turbo MMC Misadventures

https://www.petervis.com/electronics/DIP_IC_Sockets/IC_Sockets_Types/ic-socket-contact-types.gif The dual leaf contact type on the left are the most common, although you may not see the contacts so easily and they didn't usually have raised edges. The ones in your beeb are probably not very shiny e...
by tricky
Wed Jun 20, 2018 6:18 am
Forum: hardware
Topic: Newbie PSU recap questions
Replies: 9
Views: 164

Re: Newbie PSU recap questions

The two main caps in a beeb have chunky wires and traces, so just make sure that the solder is melted and don't pull the cap to hard. You might need to pull one end up a bit, then the other and repeat. Beeb PSUs are pretty hardy, but on some boards it is easy to damage a track.
by tricky
Tue Jun 19, 2018 10:33 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4261

Re: https certificates?

None of those, nor any of my links that are embedded work on my phone (default android browser) since the update, http nor https.
by tricky
Tue Jun 19, 2018 10:28 pm
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 43
Views: 592

Re: (Yet another) Memory Question

I can't think why it wouldn't work on a working beeb, maybe a master if the CPU and GPU were using different shadow ram.
I'm guessing that you don't have anything exotic installed.
I can only guess that a real beeb is not reading your EPROM correctly.
by tricky
Tue Jun 19, 2018 9:19 pm
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 48
Views: 2706

Re: New version of Scramble for the beeb (going well)

I have been feeling a bit better yesterday and today, and managed to add bombs to scramble. I still have to tidy up collision detection or something for bombs and shots, but it's getting there. The video capture is a bit dodgy as I had to use b-em + VirtualDub on my stuttering PC! https://www.youtub...
by tricky
Tue Jun 19, 2018 9:11 pm
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 43
Views: 592

Re: (Yet another) Memory Question

just a 27128 that I had lying around.
Does your image work in beebem or any emulator for that matter? You can get it in the thread linked above.
by tricky
Tue Jun 19, 2018 8:43 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4261

Re: https certificates?

I've just "fixed" the ones in the TEST ROM and Scramble threads, but the one in the first post of this http://stardot.org.uk/forums/viewtopic. ... cus#p90158 is not visible. and although the link is http, it goes to https.
by tricky
Tue Jun 19, 2018 8:39 pm
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 43
Views: 592

Re: (Yet another) Memory Question

In my video in that link, you can see that I barely get it and I think I only have one or two ram chip failures!
It is only on while the keyboard LEDs flash, then swaps to mode 0.
by tricky
Tue Jun 19, 2018 8:11 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4261

Re: https certificates?

I've just noticed that all my embedded videos have disappeared since it doesn't seem possible to access our pages with http, only https - I guess I have some editing to do!
by tricky
Tue Jun 19, 2018 7:49 pm
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 43
Views: 592

Re: (Yet another) Memory Question

Sorry, been a bit man down here for the last month, only started programming again yesterday! Here is a video of the ROM running on one of my machines with a RAM fault. You should be able to hear the sound and see it better here . The first screen should look something like http://stardot.org.uk/for...
by tricky
Tue Jun 19, 2018 7:28 pm
Forum: wanted
Topic: Wanted: Acorn machine
Replies: 6
Views: 221

Re: Wanted: Acorn machine

Model B is probably the cheapest least expensive "beeb", but it is a little large for carry on (doesn't play PoP). A master compact is about the smallest beeb, but also the most expensive and a bit less compatible that the others. Adding an MMC is a few pounds if you do it yourself, although I would...
by tricky
Mon Jun 18, 2018 12:32 pm
Forum: hardware
Topic: My Turbo MMC Misadventures
Replies: 20
Views: 427

Re: My Turbo MMC Misadventures

If you are in the vicinity of an ABUG meetup, drop in and someone will do it for you (although from your name there isn't one soon). If you are confident, it is quite easy, but you do need to do a few to get confident! I have inserted and removed hundreds of ICs over the years, but still occasionall...
by tricky
Fri Jun 15, 2018 4:07 pm
Forum: hardware
Topic: Meanwell PSU in a model B
Replies: 6
Views: 339

Re: Meanwell PSU in a model B

Please post a photo as I might need to do the same thing. Don't worry if it is already installed, I'm sure someone else posted one somewhere, I just couldn't find it.
by tricky
Thu Jun 14, 2018 11:05 pm
Forum: general
Topic: Which games from other platforms did you wish was on the BBC?
Replies: 22
Views: 1986

Re: Which games from other platforms did you wish was on the BBC?

I played it in the arcades (if it was the same game).
I don't remember it being mentioned at CA in the 14 years that I was there, but it was 10 years before my time. I can't see which versions were done there, but it was probably Tim Ansel.
by tricky
Thu Jun 14, 2018 3:20 am
Forum: introduce yourself
Topic: Hello from Charlottesville, VA, USA!
Replies: 15
Views: 332

Re: Hello from Charlottesville, VA, USA!

Welcome, looking forward to what you write for the beeb. If it's assembler you might like to search here for beebasm, or start on the old home page on retro software.
by tricky
Wed Jun 13, 2018 4:31 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 99
Views: 5182

Re: RGB to HDMI using a Pi Zero and a small CPLD

He might mean big pixels.
Having the option is good and we might be able to sneak a feature or two in when Hoglet isn't looking.
I'll still be filling the back seat of my car with CRTs when going to a show though ;)
by tricky
Wed Jun 13, 2018 2:28 pm
Forum: projects
Topic: 640x512 50 fps Bad Apple on a B... how?!
Replies: 28
Views: 857

Re: 640x512 50 fps Bad Apple on a B... how?!

I know it doesn't matter here, but you could detect that you were going to run out of time and leave any bytes only Changing 1 bit until the next frame, prioritising ones that have several similar neighbors.

Ps prioritising ones means picking them first for deferring.
by tricky
Wed Jun 13, 2018 2:23 pm
Forum: projects
Topic: 640x512 50 fps Bad Apple on a B... how?!
Replies: 28
Views: 857

Re: 640x512 50 fps Bad Apple on a B... how?!

For the full frame swap, you could just update the pallet (offscreen) ;)
by tricky
Wed Jun 13, 2018 6:29 am
Forum: introduce yourself
Topic: Back to Acorn
Replies: 10
Views: 232

Re: Back to Acorn

Welcome.
I'm enjoying the Vancouver club news.