Search found 157 matches

by dgrubb
Mon Dec 03, 2018 3:56 pm
Forum: general
Topic: How much of this is just rose-tinted specs?
Replies: 21
Views: 734

Re: How much of this is just rose-tinted specs?

If people don’t tinker anymore, why are there so many Arduino projects on the Internet? Let alone other microcontroller projects and Raspberry Pi projects.. Indeed, lamenting the death of intellectual curiosity is enormously myopic when servicing the maker movement has become a multi-million dollar...
by dgrubb
Wed Nov 28, 2018 9:54 pm
Forum: off-topic
Topic: What is the average age on here??
Replies: 256
Views: 24379

Re: What is the average age on here??

32. I was in school when Acorn disappeared and was supplanted with herds of Wintel boxen. My school held out longer than most and was well equipped with A7000s until the assimilation took place.
by dgrubb
Wed Nov 28, 2018 8:54 pm
Forum: off-topic
Topic: Data recovery from eMMC
Replies: 5
Views: 333

Re: Data recovery from eMMC

It almost sounds like it'd be easier to figure out how to repair the water damage than go through all that, depending on the extent of the damage.
by dgrubb
Mon Nov 26, 2018 3:32 pm
Forum: general
Topic: Nostalgia Nerd - BBC Domesday Project
Replies: 4
Views: 380

Re: Nostalgia Nerd - BBC Domesday Project

He’s very good. I do enjoy his videos. I enjoy his videos too, but have to file them under "entertainment" rather than "education." I like his sense of humour and the obvious affection for the subject matter, but he's made some real howlers when it comes to basic facts. For example, in one of his S...
by dgrubb
Mon Nov 19, 2018 6:58 pm
Forum: general
Topic: British Micro Federation
Replies: 35
Views: 961

Re: British Micro Federation

Commie_User wrote:
Mon Nov 19, 2018 6:56 pm
You mean that alone guaranteed the common OS as the conquering factor?
I didn't say that. :)
by dgrubb
Mon Nov 19, 2018 4:10 pm
Forum: general
Topic: British Micro Federation
Replies: 35
Views: 961

Re: British Micro Federation

How did corporate America seize on the golden key, these common operating systems, to unlock the future? They alone? The US is a single market of 350+ million people with enormous purchasing power. Some operations only start to become profitable or competitive at scale. See also the rationale of Ai...
by dgrubb
Thu Nov 08, 2018 6:40 pm
Forum: general
Topic: Best Acorn History article or book?
Replies: 5
Views: 400

Re: Best Acorn History article or book?

Almost forgot about Mobile Unleashed: The Origin and Evolution of ARM Processors in Our Devices . See link for a free ebook copy. It's mostly about ARM but there's a lot of necessary coverage of Acorn in its later years too. Richard Hallas, I believe. I think it didn't happen in the end. If he's not...
by dgrubb
Thu Nov 08, 2018 6:05 pm
Forum: software
Topic: RISC OS relicensed: now under Apache 2.0!
Replies: 81
Views: 2752

Re: RISC OS relicensed: now under Apache 2.0!

=D>
I’m pleased to say we now have a straight-forward plan.
That doesn't sound very Acorn-y, or British, to me. Try again please, ROOL.
by dgrubb
Thu Nov 08, 2018 5:58 pm
Forum: general
Topic: Best Acorn History article or book?
Replies: 5
Views: 400

Re: Best Acorn History article or book?

Wasn't somebody writing a book as part of a Phd thesis a while back? Maybe I dreamt it.
lurkio wrote:
Wed Aug 01, 2018 4:55 pm
it's a bit "academic" in places
Well ... it is a school text. Good series though, and also highly recommend Racing The Beam and I Am Error.
by dgrubb
Thu Nov 08, 2018 5:53 pm
Forum: general
Topic: Where is everyone? An information gathering topic
Replies: 104
Views: 22814

Re: Where is everyone? An information gathering topic

Just outside of Dallas, about 800 miles from anybody else. Thank goodness for the Internet. :)
by dgrubb
Wed Oct 31, 2018 8:39 pm
Forum: off-topic
Topic: Cleaning PCBs
Replies: 24
Views: 1451

Re: Cleaning PCBs

Elminster wrote:
Wed Sep 12, 2018 9:54 pm
Do you put dishwasher tablets in with the MB, for that lemon fresh smell?
I've been cautioned about using them due the residue left over possibly being mildly conductive. I don't know how much truth there is about that, mind.
by dgrubb
Wed Oct 31, 2018 8:25 pm
Forum: software
Topic: RISC OS relicensed: now under Apache 2.0!
Replies: 81
Views: 2752

Re: RISC OS relicensed: now under Apache 2.0!

I guess, underlying, is the question, would you place RISC OS in the same ballgame as Linux and Windows... Do you really see a product meeting where Linux and Windows are discussed and someone at the back of the room says "hey, but what about RISC OS"? Yeah, I completely agree with what you're sayi...
by dgrubb
Wed Oct 31, 2018 8:15 pm
Forum: software
Topic: RISC OS relicensed: now under Apache 2.0!
Replies: 81
Views: 2752

Re: RISC OS relicensed: now under Apache 2.0!

Referring back so an earlier point about whether there is any money to be made from RiscOS, what else is there available for embedded ARM? Which of these are actually used? Mostly Linux, but there are a few interesting edge-cases out there too: BSD, FreeRTOS, ZephyrOS and QNX, off the top of my hea...
by dgrubb
Tue Oct 23, 2018 2:30 pm
Forum: software
Topic: RISC OS relicensed: now under Apache 2.0!
Replies: 81
Views: 2752

Re: RISC OS relicensed: now under Apache 2.0!

The issue for community involvement has always been the cost of entry via DDE - it needs to be open sourced and a free download. Agreed. The approach of just about every other open-source project is reduce the friction to access as much as possible, providing, at a minimum, a description of the too...
by dgrubb
Wed Oct 17, 2018 8:23 pm
Forum: off-topic
Topic: Poor manufacturing
Replies: 9
Views: 550

Re: Poor manufacturing

had a Samsung tablet for 8yr no problems, then my oldest wanted an iPad too, screen broke within a month (dust fell on it), & endless charger leads, utter sh!te Heh. My six, four and two year olds (also, the wife ;) ) have all failed to put a dent in the family iPad after several years of treating ...
by dgrubb
Tue Oct 02, 2018 4:03 pm
Forum: other vintage computer hardware, software and games
Topic: A micro-controller for the retro enthusiast
Replies: 11
Views: 706

Re: A micro-controller for the retro enthusiast

It's really cool, but I'm not sure I understand the practical advantage of making it a dedicated ASIC. Why not just use an FPGA/CPLD and load it with the core you desire to use?
by dgrubb
Thu Jun 14, 2018 8:18 pm
Forum: off-topic
Topic: ST micro ARM boards....
Replies: 10
Views: 659

Re: ST micro ARM boards....

with my AVR based arduinos I tend to generally just use plain old GCC to program the base AVR. Though that doesn't mean I couldn't be converted into using a framework as the ARM chips are somewhat more complicated than the 8 bit AVR / PIC micros. I used to be be purely a PIC user, but was deeply ag...
by dgrubb
Wed Jun 13, 2018 9:38 pm
Forum: general
Topic: How far gone must a BBC be to be unfixable?
Replies: 23
Views: 1250

Re: How far gone must a BBC be to be unfixable?

steve3000 wrote:
Sat Jun 09, 2018 7:39 am
Even now I'm not sure of the full extent of damage yet, but so far repaired about 30 tracks! [...] I've learnt so much about the circuitry of the A3010 in the process, and every little improvement in function feels so rewarding! I'll get there one day :)
Highly commendable!
by dgrubb
Fri Jun 08, 2018 5:33 pm
Forum: hardware
Topic: A3000 startup procedure?
Replies: 2
Views: 207

Re: A3000 startup procedure?

Phlamethrower wrote:
Fri Jun 08, 2018 5:16 pm
On reset, MEMC maps the ROM to &00000000. The ROM code then performs a magic handshake to restore it to normal behaviour.

(See section 5.4 of the MEMC manual - http://www.home.marutan.net/arcemdocs/)
Got it. Thanks for the reference.
by dgrubb
Fri Jun 08, 2018 5:09 pm
Forum: general
Topic: How far gone must a BBC be to be unfixable?
Replies: 23
Views: 1250

Re: How far gone must a BBC be to be unfixable?

With Commodore people, it seems to be when the board tracks have utterly perished. That's probably my personal limit as well. I'm game for repairing a small number of traces, but if a leaked battery has corroded through several layers and damaged a large number of traces then it's probably beyond m...
by dgrubb
Fri Jun 08, 2018 4:55 pm
Forum: general
Topic: Acorn machines in the movies / TV
Replies: 42
Views: 4448

Re: Acorn machines in the movies / TV

Believe it or not - that's my Archimedes monitor :) I was paid for the day (my 16th Birthday!) to supervise the Archimedes and show the actors how to run the programme (I didn't write it - but I did modify it to make it easier to cue and recue (it just used the space bar to change from memory). It ...
by dgrubb
Fri Jun 08, 2018 4:53 pm
Forum: hardware
Topic: A3000 startup procedure?
Replies: 2
Views: 207

A3000 startup procedure?

In the ARM2 datasheet it notes that coming out of reset the PC goes to 0x0 (RAM in the A3000 memory map) and starts loading code from there. Meanwhile, the start of ROM is mapped up at 0x3400000.

How does the A3000 startup and get to a place where it can begin executing RISC OS?
by dgrubb
Fri Jun 08, 2018 4:34 pm
Forum: off-topic
Topic: Modern mice
Replies: 20
Views: 946

Re: Modern mice

What on Earth are you doing to them? I don't think I've ever seen a mouse outright break, even the grotty cheap ones.
by dgrubb
Fri Jun 08, 2018 4:30 pm
Forum: general
Topic: Do your family and friends 'get it'?
Replies: 25
Views: 1334

Re: Do your family and friends 'get it'?

My wife doesn't really get it, per se. However, she appreciates that I have a hobby which is useful ("help! The printer isn't working!", "Grandma's WiFi isn't working" etc) and which has ultimately led to a career that, while not exactly landing us in the lap of luxury, has provided me with decent j...
by dgrubb
Thu Nov 09, 2017 3:26 am
Forum: general
Topic: Acorn machines in the movies / TV
Replies: 42
Views: 4448

Re: Acorn machines in the movies / TV

Found one!

Doctor Who: Silver Nemesis (1988). Nazis hiding in South America use an Archimedes for calculating the return destination of a meteorite conveying a Time Lord super-weapon.
vlcsnap-2017-11-08-21h21m13s534.png
vlcsnap-2017-11-08-21h21m00s242.png
by dgrubb
Mon Sep 25, 2017 2:04 pm
Forum: off-topic
Topic: Cheap USB logic analyser - recommendations?
Replies: 9
Views: 1216

Re: Cheap USB logic analyser - recommendations?

I've got my eyes on the Bitscope Micro . It's only six channels (plus two analogue, so eight really) and 20MHz, but it's tiny and £70. I think it'll do for a lot of stuff, and loads of people seem to like it, but I'm open to being told it's a terrible idea. (-8 I really like the builtin analog and ...
by dgrubb
Mon Sep 25, 2017 1:59 pm
Forum: off-topic
Topic: Cheap USB logic analyser - recommendations?
Replies: 9
Views: 1216

Re: Cheap USB logic analyser - recommendations?

I have an Open Workbench logic sniffer and, for the price ($50), it's been a great purchase. The storage memory on it can be a little tight, but it's fully open-source and has 32 channels. Alternatively, you can go even cheaper and get a Chinese knockoff (~$15) of one of the streaming models (like t...
by dgrubb
Mon Sep 18, 2017 3:09 pm
Forum: other vintage computer hardware, software and games
Topic: SDK 85
Replies: 11
Views: 1584

Re: SDK 85

I love that the "display drivers" are literally transistors driving extra current.
by dgrubb
Fri Sep 15, 2017 2:00 pm
Forum: other vintage computer hardware, software and games
Topic: Eastern Blok computers
Replies: 8
Views: 1335

Eastern Block computers

Interesting videos, thanks for sharing. I recall reading somewhere, so take with a gain of salt, that the authorities actually left the hacker scene (home micros and radio enthusiasts etc) largely alone so it was a lot more vibrant, albeit more resource constrained, than we in the West tend to assum...
by dgrubb
Mon Aug 28, 2017 3:08 am
Forum: hardware
Topic: Chipset datasheets (A3000)
Replies: 2
Views: 510

Re: Chipset datasheets (A3000)

sirbod wrote:Try the Archimedes Level Hardware section for the VLSI chipset manuals.
Terrific, cheers!