Search found 269 matches

by scruss
Fri Sep 18, 2020 3:16 am
Forum: modern implementations of classic programming languages
Topic: Tyoob online! (BBC BASIC stress test)
Replies: 6
Views: 162

Re: Tyoob online! (BBC BASIC stress test)

That's really impressive, Richard!
by scruss
Tue Sep 15, 2020 3:23 am
Forum: general
Topic: ARM sold to Nvidia (by Softbank)
Replies: 6
Views: 355

Re: ARM sold to Nvidia (by Softbank)

What can they do? It's already a Japanese company, so it's already offshore.
by scruss
Fri Sep 11, 2020 11:28 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

It is when you add the web cam and add lots of plugins the 2b becomes an issue. That is why the minimum recommend pi by octopi the is now a 3b. Huh, who knew. I've been running that 2B since 2016 with the camera and a non-trivial number of plugins (16) and never once has it stuttered. I find gcode ...
by scruss
Thu Sep 10, 2020 11:03 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

I've sliced and streamed from a 2B quite well for some years. I no longer slice on the Raspberry Pi: it was fast enough, but changing print settings was fiddly. Also, compiling cura-steamengine or slic3r was annoying. Both Cura and Slic3r desktops have a "Slice to OctoPrint" options that are easy to...
by scruss
Mon Sep 07, 2020 4:42 pm
Forum: 8-bit acorn software: classic games
Topic: Deathstar
Replies: 16
Views: 707

Re: Deathstar

:shock: Wow, that 49-way joystick must have been a feat of engineering. Was it a custom analogue stick or a complex digital position type? Digital, as far as I can tell. It encoded on a 7×7 matrix. Similar ones are still used on certain arcade machines, plus older games like Gauntlet . They need a ...
by scruss
Mon Sep 07, 2020 1:01 am
Forum: 8-bit acorn software: classic games
Topic: Deathstar
Replies: 16
Views: 707

Re: Deathstar

English Invader wrote:
Sun Sep 06, 2020 9:46 pm
… Caps Lock and Ctrl for rotation
The original - which I played far too much of as a smaller oik - had a 49-way joystick. I'd hate to play it with asteroids-style controls.
by scruss
Mon Aug 17, 2020 11:44 pm
Forum: 8-bit acorn emulators
Topic: Memories of RISC OS Beeb emulators
Replies: 15
Views: 738

Re: Memories of RISC OS Beeb emulators

Working with files inside disc images has been a standard RISC OS thing since 1991. I'm still waiting for other less modern OS's to catch up :-( Macs have had this since System 7 in 1991, Solaris and other unices since the late 80s. Windows? Who cares? Fuse on Linux takes virtual disk images to a r...
by scruss
Sat Aug 08, 2020 5:45 pm
Forum: introduce yourself
Topic: Hi from Montreal (via Bexhill)
Replies: 13
Views: 594

Re: Hi from Montreal (via Bexhill)

Hi from Toronto!

There's another *. user in Toronto with an Atom and *possibly* the right drives
by scruss
Fri Aug 07, 2020 3:35 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

Is there still a shortage in the market of good quality filament at the moment? Not really, I was just remiss in ordering it, and the 3 kg of 3D850 / 3D870 I bought is effectively useless and I have to return it. I have no PLA at work, only PET-G or loads of ancient ABS I was trying to avoid. PPE m...
by scruss
Thu Aug 06, 2020 1:08 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

Yes, it's the same material as the Amazon listing. But I came back to it after the weekend and it wouldn't feed even at 255 °C. I think the supplier has quality control issues, so I have to return it: I need prints that will finish without intervention. I've got so low on good filament I had to reso...
by scruss
Tue Aug 04, 2020 2:13 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

International shipping is in a mess right now. I've been dealing with suppliers in China on a couple of projects and the only way to get stuff out with any kind of delivery guarantee is to pay for DHL. This is more expensive than I expect most CR6 preorders would be willing to pay, but is incredibly...
by scruss
Sun Jul 26, 2020 6:45 pm
Forum: 8-bit acorn hardware
Topic: Printing from the BBC Model B
Replies: 17
Views: 1906

Re: Printing from the BBC Model B

Not directly with a Beeb, no, but on many other "small" systems, yes. These printers work well, are often surprisingly well made (and powerful: they've typically got an ARM Cortex-M0 inside doing the clever stuff) but woefully under-documented by suppliers. There are many variants, and you typically...
by scruss
Sun Jul 26, 2020 2:22 am
Forum: development tools
Topic: Generating MODE 2 screens on a PC
Replies: 3
Views: 411

Re: Generating MODE 2 screens on a PC

I've always found ImageMagick to be unnecessarily hard to use. Far too many options, and sometimes not great output. Netpbm is what I use to dither to a limited palette. It's best to build it from source so you're not stuck with the 20+ year old version that comes packaged with most Linux distributi...
by scruss
Sun Jul 26, 2020 1:59 am
Forum: scanning of books, magazines, ads and letters
Topic: Personal Computer World scans!
Replies: 61
Views: 3107

Re: Personal Computer World scans!

What I can make out of the Space Trader code is that it seems to owe more than a bit to PCC's Star Trader
by scruss
Sun Jul 26, 2020 1:35 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

No, absolutely not. It's important to mark product that can be recycled, because they have to be identifiable in the waste stream. It's not marketing at all. Not everything that you put in the recycling stream gets recycled; only the materials than have a market for reuse at an economic rate get rec...
by scruss
Sat Jul 25, 2020 9:52 pm
Forum: development tools
Topic: Generating MODE 2 screens on a PC
Replies: 3
Views: 411

Re: Generating MODE 2 screens on a PC

Neat! I just found out about Dithertron, which I tried out on your image in BBC Mode 2. Here's an image uncorrected for aspect ratio:
brighton1-bbcmicro.mode2.png
brighton from Dithertron
brighton1-bbcmicro.mode2.png (16.58 KiB) Viewed 270 times
I wrote about Dithertron and its associated IDE here: viewtopic.php?f=55&t=20047
by scruss
Sat Jul 25, 2020 9:44 pm
Forum: development tools
Topic: 8bitworskhop's Dithertron - mode 2 screen generation on your browser
Replies: 1
Views: 266

8bitworskhop's Dithertron - mode 2 screen generation on your browser

I was just on a session at KansasFest (the Apple II event, usually in Kansas City) that introduced me to the very neat 8bitworkshop online IDE . While the IDE doesn't (yet!) support the Beeb, its Dithertron graphics tool does. It only generates PNG images in Mode 2 format right now, but is still pot...
by scruss
Sat Jul 25, 2020 8:02 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

The Recycle symbol, in Canada at least, means "recyclable where facilities exist". It's effectively saying that the material is composed of a single polymer or material and could be included in the recycling stream. If the material were a composite (say fibre-reinforced, or the PC/ABS blend you ment...
by scruss
Sat Jul 25, 2020 7:44 pm
Forum: 8-bit acorn emulators
Topic: Choosing a copyright license for DFS image tool / BBC BASIC de-tokenizer
Replies: 21
Views: 1000

Re: Choosing a copyright license for DFS image tool / BBC BASIC de-tokenizer

although even with CC0, in the UK it's very difficult to waive your moral rights. Moral rights link you to the creation of your work. While you can disclaim liability for all uses of the work you created (to the fullest extent permitted by applicable law, at least), you can't disclaim liability for ...
by scruss
Thu Jul 23, 2020 10:15 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

If I can get results like that on a CR6 with normally priced filament then that would be good. I'm sure it's doable. I've just cracked open a spool of locally-made low-sheen tough PLA and it's rather good. Any attempts to take pictures to show layer detail have failed for me. It's not quite matte b...
by scruss
Sun Jul 19, 2020 4:53 pm
Forum: 8-bit acorn emulators
Topic: Choosing a copyright license for DFS image tool / BBC BASIC de-tokenizer
Replies: 21
Views: 1000

Re: Choosing a copyright license for DFS image tool / BBC BASIC de-tokenizer

I hadn't considered that one in detail before. Seems to strike a nice balance between freedom to use and modify, and retaining control of credit. I'd use it if I had anything worthwhile to release. As is, my code is best covered by the Sandia Message Public License (SMPL) :D Just built beebtools. Ni...
by scruss
Fri Jul 10, 2020 3:32 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9035

Re: 3D printing advice

I watched that (or as much as I could manage). Matte black filament always hides layers. Indeed, any black filament will do this. From the print temperature (high!) it looks like it has a high pigment and filler load. Potential for nozzle wear and clogging. It's also bloody expensive and the vid say...
by scruss
Mon Jul 06, 2020 9:42 pm
Forum: 8-bit acorn emulators
Topic: Choosing a copyright license for DFS image tool / BBC BASIC de-tokenizer
Replies: 21
Views: 1000

Re: Choosing a copyright license for DFS image tool / BBC BASIC de-tokenizer

To the person reusing the code, there's no practical difference between BSD 2-clause and MIT. I've seen corporate users prefer to use MIT over anything else, since it allows a company to benefit from it at no cost beyond putting a credit somewhere — and it doesn't have to be at all easy to find. So ...
by scruss
Mon Jul 06, 2020 9:41 pm
Forum: off-topic
Topic: Rapid not selling 60/40 to general punters anymore?
Replies: 24
Views: 1210

Re: Rapid not selling 60/40 to general punters anymore?

Lead as a metal at typical ambient temperatures does not leach into water courses very much. The biggest problem with electronic and electrical equipment is the incorrect reprocessing that takes place (typically in third world countries). Which is why China was one of the strongest advocates for Ro...
by scruss
Mon Jul 06, 2020 2:36 pm
Forum: acorn atom and acorn system series
Topic: Connect a 80287 to a 6502 computer?
Replies: 12
Views: 678

Re: Connect a 80287 to a 6502 computer?

What about a C8231A, cost about $19,- on Ebay The 8231 is a licensed version of the AM9511. I know that for the PICAXE microcontroller, there is a floating point co processor in a DIP-8 package. That was the old Micromega uM-FPU V2 . As I said upthread, those went away when the developer died sudde...
by scruss
Mon Jul 06, 2020 2:25 pm
Forum: 8-bit acorn emulators
Topic: Choosing a copyright license for DFS image tool / BBC BASIC de-tokenizer
Replies: 21
Views: 1000

Re: Choosing a copyright license for DFS image tool / BBC BASIC de-tokenizer

There's virtually no difference between the BSD 2-clause and the MIT licences, if https://choosealicense.com/appendix/ is to be believed. Neither require or even encourage share-alike. If you've previously used GPL, it sounds like sharing is important for you.
by scruss
Mon Jul 06, 2020 2:11 pm
Forum: off-topic
Topic: Rapid not selling 60/40 to general punters anymore?
Replies: 24
Views: 1210

Re: Rapid not selling 60/40 to general punters anymore?

sirmorris wrote:
Mon Jul 06, 2020 1:26 pm
I know leaded comes with the caveat of impending poisoning and death but I can live with that :lol:
It's not you who has the problem. It's the folks who have to deal with your kit when it eventually gets scrapped that end up with the problem.
by scruss
Sun Jul 05, 2020 7:14 pm
Forum: off-topic
Topic: Rapid not selling 60/40 to general punters anymore?
Replies: 24
Views: 1210

Re: Rapid not selling 60/40 to general punters anymore?

That's a niche take, to put it mildly. SnCu is immensely unforgiving, and would put anyone trying it for the first time off soldering for life. I don't think a regular iron would soften it, let alone let it flow. SAC305 (96½% tin, 3% silver, and ½% copper) is the lead-free solder that's closest to w...
by scruss
Sun Jul 05, 2020 6:51 pm
Forum: acorn atom and acorn system series
Topic: Connect a 80287 to a 6502 computer?
Replies: 12
Views: 678

Re: Connect a 80287 to a 6502 computer?

x87s are really tied to Intel chip internals. It may be a pleasantly futile task to try, though. Apart from the AM9511/AM9512 previously mentioned, the Motorola 68881 saw some use outside its 68k base. Apparently the Apple IIgs's maths library had support for it. The Micromega (unrelated to the 8-bi...

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