Search found 157 matches

by Boydie
Sun Jan 21, 2018 8:02 pm
Forum: archive submissions
Topic: Atom ROMs
Replies: 3
Views: 55

Re: Atom ROMs

Don’t know if the econet roms work. Having a running econet has been on the to-do list for the past 20 years at least. Before I found them under a store room table in 1993, the atoms had been used in undergraduate teaching on an econet administered by a system 3, so it’s pretty safe to assume they w...
by Boydie
Sun Jan 21, 2018 6:15 pm
Forum: archive submissions
Topic: Atom ROMs
Replies: 3
Views: 55

Atom ROMs

I've finally got round to imaging the expansion eproms in my Atoms. I would have expected the 3 Econet roms to have been identical, but they're not so there may be some eprom degradation going on... ISTR being told in the early 90s that FP is some sort of floating point extension to Basic. ONLI alle...
by Boydie
Sun Jan 21, 2018 5:40 pm
Forum: archive submissions
Topic: System ROM dumps
Replies: 0
Views: 50

System ROM dumps

Inspired by this weekend's meet, I've finally got round to reading the roms fitted to all my System 3 cards. They may be of use/interest; they probably won't! I assume TANDOS, Toshiba, and SHUDOS are 40/80 column variants of the DOS rom, tweaked to whatever drive was fitted. 80col VDU Font came off ...
by Boydie
Thu Jan 18, 2018 9:09 am
Forum: hardware
Topic: How do Beebs break in transit?
Replies: 11
Views: 410

Re: How do Beebs break in transit?

One thing I’ve learnt the hard way - just because a chip is sitting nicely in its socket, it doesn’t mean all its pins are making good contact. Some motherboard manufacturers used pretty shoddy sockets which barely made contact, often made worse by aftermarket expansions. I had one machine that woul...
by Boydie
Thu Jan 18, 2018 8:53 am
Forum: hardware
Topic: How do Beebs break in transit?
Replies: 11
Views: 410

Re: How do Beebs break in transit?

Which video ula is it? If it’s one of the heatsink-less ones, istr s26 doesn’t behave as it should, owing to a bug in the ula, and setting it in either position causes weird effects even in a working machine. Edit: just checked one of my machines with the later ula. S26 doesn’t have a link set. IIRC...
by Boydie
Sun Jan 07, 2018 1:50 pm
Forum: hardware
Topic: Electron cassette counter revolution rate
Replies: 26
Views: 592

Re: Electron cassette counter revolution rate

I’m assuming the original question is for implementation of a virtual tape deck, loading a digitised file into an emulator? The trouble is that some real decks have the counter on the take-up spindle, others on the take-off (I’ve owned examples of both), so some counters move faster with a full reel...
by Boydie
Thu Jan 04, 2018 4:35 pm
Forum: hardware
Topic: What's the worst that could happen?
Replies: 16
Views: 553

Re: What's the worst that could happen?

I have 3 faulty Model B motherboards, which you’re welcome to borrow and have a crack at fixing. I’ve also got a spare keyboard (don’t know if it works) which you could also borrow.
by Boydie
Fri Dec 22, 2017 9:10 am
Forum: off-topic
Topic: xmas 10" 78rpm tunes from 1954ish
Replies: 4
Views: 539

Re: xmas 10" 78rpm tunes from 1954ish

Is it my imagination, or does Tommie Connor appear to have been the inspiration for Tommy Cockles (Arthur Atkinson’s pal) on the Fast Show?
by Boydie
Thu Dec 21, 2017 8:22 pm
Forum: hardware
Topic: RIFA'd again
Replies: 6
Views: 454

Re: RIFA'd again

AFAIK, pretty much anything with a PSU made by Astec has RIFA caps, which effectively means most machines/peripherals from the 70s-90s, and not just Acorn. I’ve had them fail in a TRS80 Model III, and ISTR Apple IIs had them as well. I’ve had them blow in Arcs (up to A540). Out of interest, how does...
by Boydie
Mon Dec 11, 2017 7:40 am
Forum: off-topic
Topic: Windows 10....
Replies: 117
Views: 8873

Re: Windows 10....

For those of us on really slow connections (5 Mb and lucky to get that) and multiple machines on the same network, there is an option somewhere to download to one machine, which then seeds it to the others. Not too sure how you set it up to do so; presumably you have to ensure that only one machine ...
by Boydie
Mon Dec 11, 2017 7:34 am
Forum: off-topic
Topic: Windows 10....
Replies: 117
Views: 8873

Re: Windows 10....

IMHO, you can use a NAS for daily backups if the amount of data is not large. That is, you can survive it being lost. But all other backups should be on independent isolated media. I use external USB HDDs. But how often and how much does depend on how much and how important your data is. Mark I use...
by Boydie
Wed Dec 06, 2017 5:05 pm
Forum: general
Topic: Today I received.....
Replies: 4355
Views: 265897

Re: Today I received.....

Thanks My Hermes. Im sure my kids play house is a ‘safe place’ to leave a box of electronics in the middle of winter. Idiots. And they left the gate open. You’re lucky you got it at all. They’ve not nanaged to deliver a single thing to me in the past 10 years. These days, if my order confirmation s...
by Boydie
Sun Dec 03, 2017 10:12 pm
Forum: off-topic
Topic: LOLPRICE
Replies: 2698
Views: 196745

Re: LOLPRICE

Doesn’t even include the AA CMOS batteries!
by Boydie
Thu Nov 30, 2017 9:50 pm
Forum: general
Topic: Cars and Organs
Replies: 33
Views: 857

Re: Cars and Organs

Cambridge/Oxford, early 90s (hence the Acorn connections), but native to Manchester. I only found out about Abug today. Will have to check what my on-call rota looks like. And decide what interesting kit can be brought. Unfortunately, a lot of the fun stuff either weighs a tonne or still has its ori...
by Boydie
Thu Nov 30, 2017 7:42 pm
Forum: general
Topic: Cars and Organs
Replies: 33
Views: 857

Re: Cars and Organs

Consultant anaesthetist/intensivist
by Boydie
Thu Nov 30, 2017 7:24 pm
Forum: general
Topic: Cars and Organs
Replies: 33
Views: 857

Re: Cars and Organs

Must be the angle of the slice. You’ve had 4 ICU consultants all spot it immediately but not have a clue what it is!
Only conclusion we came to was it was 8 years ago and you’re still able to post, so it’s either benign or successfully treated.
by Boydie
Thu Nov 30, 2017 5:30 pm
Forum: general
Topic: Cars and Organs
Replies: 33
Views: 857

Re: Today I received.....

lazarusr wrote:Here's a picture of one of my organs.

What the heck was that at C1/2 level??? (I note the scan was 2009)
by Boydie
Wed Nov 29, 2017 1:21 am
Forum: hardware
Topic: Acorn M4
Replies: 7
Views: 386

Re: Acorn M4

I did once find a mysterious hard drive containing a bootable-but-not-really Mach-based RISCiX. It looked like they'd put a lot of effort into it before giving up and porting to bare metal instead. That couldn't have been quick! (I'm unsure whether that hard drive is now in Bletchley or a cardboard...
by Boydie
Sat Nov 25, 2017 6:10 pm
Forum: general
Topic: Removing paint from old cases
Replies: 2
Views: 149

Re: Removing paint from old cases

It is, hence the caveat to test on the inside surface.

However, I suspect uPVC is softer and more susceptible to damage/staining than ABS.
by Boydie
Sat Nov 25, 2017 3:36 pm
Forum: general
Topic: Removing paint from old cases
Replies: 2
Views: 149

Removing paint from old cases

A lot of old machines come with various security markings painted on, which are pretty much impossible to remove without the paint stripper melting the plastic of the case. In a similar vein, the previous owners of my house decided to paint the uPVC conservatory to give a wood effect - couple of lay...
by Boydie
Wed Nov 22, 2017 11:18 am
Forum: off-topic
Topic: Grump grump grump
Replies: 15
Views: 645

Re: Grump grump grump

That’s horrible. Deepest condolences.
by Boydie
Tue Nov 21, 2017 12:55 pm
Forum: off-topic
Topic: Grump grump grump
Replies: 15
Views: 645

Re: Grump grump grump

He's 80. I don't know if he'll ever leave hospital. This might be the last Christmas I see him. For what it’s worth, you’ve not said anything that automatically makes me think that he won’t leave hospital. So far, you’ve just described a fairly typical ICU patient (including age). Things will just ...
by Boydie
Sat Nov 18, 2017 10:10 am
Forum: emulators
Topic: VirtualRPC screen resize in virtual machine
Replies: 1
Views: 262

VirtualRPC screen resize in virtual machine

I may be trying to be overly ambitious here, but I'm going to try anyway... I currently use VirtualRPC as my emulator of choice, probably mainly because I paid for it (some years ago before there were decent alternatives) so I'm determined to get my money's worth! I also have a central server at hom...
by Boydie
Tue Nov 14, 2017 10:46 pm
Forum: off-topic
Topic: LOLPRICE
Replies: 2698
Views: 196745

Re: LOLPRICE

If the disc label is correct, the software on it was originally distributed by its author for the cost of the media. Even when considering the past 30+ years, that’s still about a fifty-fold mark-up! I’ve got a couple of hundred of these knocking around at home. Do I need to increase my home insuran...
by Boydie
Sat Nov 11, 2017 1:38 pm
Forum: hardware
Topic: Beeb Repair
Replies: 7
Views: 414

Re: Beeb Repair

Watford did release a zif socket for the cartridge socket. Istr it fitted fine in the later cases (which had the larger hole for the cartridge, with perforations so it could be poked out. Early cases came with a pre-cut opening which was smaller than the later perforated version. If you look from th...
by Boydie
Thu Nov 09, 2017 10:13 pm
Forum: off-topic
Topic: MiniPro TL866 Eprom Programmer
Replies: 11
Views: 402

Re: MiniPro TL866 Eprom Programmer

I’ve been using one for several months now. It works fine with seriously ancient (getting on for 40 years old) 27128s (mostly 21v) and 27256s, including ones my Watford Adder refused to work with. Never needed to try it with 2764s. It runs fine under Windows10 (64). My nearest convenient usb socket ...
by Boydie
Thu Nov 09, 2017 5:25 pm
Forum: hardware
Topic: Unix on the Beeb
Replies: 36
Views: 1337

Re: Unix on the Beeb

Is it compiled for arm1 or arm2? ie Will it work on a real arm evaluation system?
by Boydie
Sat Nov 04, 2017 10:50 pm
Forum: hardware
Topic: Issue 1 BBC, how to tell ?
Replies: 12
Views: 406

Re: Issue 1 BBC, how to tell ?

Someone at uni (rme, for the benefit of crj) claimed to have an actual proton, fished out of a skip at Acorn. Allegedly, it was several separate boards (system-style eurocards?), hard-wired together. Whether this counts as an issue 1, I don’t know. He may even have been making it up. Then again, Aco...
by Boydie
Sat Nov 04, 2017 9:59 am
Forum: hardware
Topic: Unstable display on issue 7 beeb
Replies: 14
Views: 410

Re: Unstable display on issue 7 beeb

Turning the interlace off for a CRT display was always fairly subtle, particularly if it's a TV with a scart input. On a proper dedicated monitor, it greatly reduced eyestrain-inducing flicker, but the results for a tv with rgb input (even trinitron) were less impressive. For a plasma, it may make a...

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