Search found 196 matches

by Boydie
Sun Jul 01, 2018 6:51 pm
Forum: general
Topic: BBC releases computer history archive
Replies: 90
Views: 1967

Re: BBC releases computer history archive

If you want an example of poor video quality, take a look at 'Making The Most Of The Micro' Live (in full screen for the full horror). It has dreadful motion artefacts; on Facebook they are described, by somebody well qualified to comment, as "wobbly edged motion (interlaced content scaled as progr...
by Boydie
Thu Jun 28, 2018 10:17 am
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2656
Views: 218837

Re: Worth Taking a Look At

The 80x25 definitely is a System card. Don’t know enough about the eurobeeb to say if it’s compatible, but it may work in an atom - the expansion connector is the same, and System Econet and DOS boards certainly worked.
by Boydie
Fri Jun 08, 2018 1:11 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG Cambridge Sept 7th-9th 2018 BOOKING THREAD
Replies: 61
Views: 1958

Re: ABUG Cambridge Sept 7th-9th 2018 BOOKING THREAD

For Saturday night, I can highly recommend the Wrestlers on Newmarket Rd. Best Thai food in the area, but will need a reservation.
by Boydie
Wed Jun 06, 2018 11:48 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG Cambridge Sept 7th-9th 2018 BOOKING THREAD
Replies: 61
Views: 1958

Re: ABUG Cambridge Sept 7th-9th 2018 BOOKING THREAD

Put me down for whole weekend, with some kit.

IIRC they’ve got a working A680 there with appropriate flavour of riscix. Could do with cloning that onto my 680.
by Boydie
Sat Jun 02, 2018 9:46 pm
Forum: for sale / freebies
Topic: Having a clear out
Replies: 52
Views: 1862

Re: Having a clear out

Is the C64 still available?

If so, please can I have it?
by Boydie
Mon May 28, 2018 3:56 pm
Forum: off-topic
Topic: LOLPRICE
Replies: 2793
Views: 222194

Re: LOLPRICE

Interestingly, he seems to have several versions of the same items for sale, some of which are vaguely sensibly priced and some are extortionate.

The extortionate ones all seem to have a “P” prefix in the item name. Wonder if this stands for what he’s taking?
by Boydie
Mon May 28, 2018 3:45 pm
Forum: software
Topic: Nested archives in SparkFS
Replies: 4
Views: 241

Re: Nested archives in SparkFS

I’ve done a bit more experimenting. I use !sparkfs v 1.42. Compressing as zip (ie /zip) in fact allows me to nest archives (either zip or arc) within each other and all wirks fine. Don’t know why I’ve struggled before). Conpressing everything to a spark file (ie /arc) will allow zip files within it ...
by Boydie
Thu May 24, 2018 9:13 pm
Forum: software
Topic: Nested archives in SparkFS
Replies: 4
Views: 241

Nested archives in SparkFS

I’m trying to move my software archive between machines (some HostFS, some ADFS). Previous attempts have led to corrupted file attributes for random files. The most bulletproof way to avoid this I’ve found is to compress them as a spark file and transfer that. The only drawback is that some of the a...
by Boydie
Thu May 03, 2018 4:42 pm
Forum: hardware
Topic: EPROM programmer
Replies: 18
Views: 908

Re: EPROM programmer

These cheap eraser units are okay. But just be aware of the limitations:- The timers are clockwork, so don't expect good accuracy Some units don't prevent the UV light from escaping, so if light does leak out, don't look at the light!!! Either fit a proper UK 13A plug (with a 3A fuse), or use a pro...
by Boydie
Thu May 03, 2018 1:52 pm
Forum: hardware
Topic: BBC model b turns off
Replies: 6
Views: 286

Re: BBC model b turns off

Have you checked the voltages on the auxiliary power connector, ie does it produce 12V? I’ve had a PSU where Q4 died. Despite appearances and labelling, it isn’t a transistor but some sort of comparator to regulate the 5V line. The symptom was that the 5V line was dead but 12V was fine. For the reco...
by Boydie
Sun Apr 22, 2018 9:18 pm
Forum: off-topic
Topic: LOL DESCRIPTION
Replies: 606
Views: 61135

Re: LOL DESCRIPTION

Did even Watford ever sell dual disc drives, in which the two drives were so blatantly mismatched?
by Boydie
Fri Apr 20, 2018 7:45 am
Forum: for sale / freebies
Topic: IDE podules - 8 and 16 bit versions
Replies: 40
Views: 2096

Re: IDE podules - 8 and 16 bit versions

A3000 version please
Can collect at Wakefield
by Boydie
Mon Apr 09, 2018 12:59 pm
Forum: other vintage computer hardware, software and games
Topic: C64 fault
Replies: 7
Views: 523

C64 fault

I recently obtained a breadbin C64. Initially, it did nothing. Opening it up showed that the large glass fuse had blown. One replacement later, it gives the BASIC header and number of bytes free. However, there’s no cursor and the keyboard’s dead. Swapping the two 6526 CIA chips changed the problem ...
by Boydie
Sun Apr 08, 2018 9:15 pm
Forum: off-topic
Topic: Windows 10 (and 8) and Laptops
Replies: 21
Views: 729

Re: Windows 10 (and 8) and Laptops

And if you opt for an NVME drive on the M.2 interface, the performance is positively obscene. The Samsung 960s come close to saturating 4 channels of PCIe 3.0.
by Boydie
Sat Apr 07, 2018 8:36 am
Forum: off-topic
Topic: Windows 10 (and 8) and Laptops
Replies: 21
Views: 729

Re: Windows 10 (and 8) and Laptops

Part of the problem is that both CPUs are pretty dire, with woeful Passmark scores. The P360 is low-end, but the 4355M is even lower. My old laptop is an 8 year old I5-430M (also HP), so hardly high-end or expensive, even at the time of manufacture. But even that CPU scores higher than those two. Wi...
by Boydie
Tue Mar 20, 2018 9:41 am
Forum: hardware
Topic: Trying to restore an ABC310
Replies: 2
Views: 300

Re: Trying to restore an ABC310

Good suggestion, but I doubt it’d be strong enough.
These things are sheet steel with pretty industrial hinges/clips. Unfortunately, they seem to be less than precision engineered, so take quite a lot of force to open/close and even more force (I worry about using a weak screwdriver) to clip shut.
by Boydie
Sat Mar 17, 2018 8:59 am
Forum: hardware
Topic: Trying to restore an ABC310
Replies: 2
Views: 300

Trying to restore an ABC310

One of my (alleged) Cambridge Workstations came from inside Acorn. During it’s life, it’s had its 32016 board removed, along with the hinged aluminium carrier that the copro board usually sits on. What makes me suspect that it wasn’t originally an ACW is that it also has the Acorn mouse board fitted...
by Boydie
Sat Mar 17, 2018 1:55 am
Forum: hardware
Topic: I've wondered this for thirty years...
Replies: 19
Views: 1029

Re: I've wondered this for thirty years...

You may have hit on the reason why it was designed but never launched as a beeb in 1983. The 1985 Beebug review of the 128k upgrade claimed that the connector was never intended for sideways ram. It was originally there to take a different type of main ram should there be supply issues with the usua...
by Boydie
Sat Mar 17, 2018 1:21 am
Forum: hardware
Topic: I've wondered this for thirty years...
Replies: 19
Views: 1029

Re: I've wondered this for thirty years...

Agreed. So the bigger question is why it wasn’t rolled out as the Model C in 1983/4, when it would have been a much bigger hit? As it was, the July launch reviews all asked the same question. And when the Master came out the following February, the people who’d bought a B+ were foaming at the mouth....
by Boydie
Fri Mar 16, 2018 11:12 pm
Forum: hardware
Topic: BBC B Micro Power Supply - okay if run unloaded?
Replies: 17
Views: 749

Re: BBC B Micro Power Supply - okay if run unloaded?

Not sure if this counts as sage advice or just an example of luck triumphing over stupidity... Whenever I re-cap a PSU, I always test it off load. The voltages are always what they should be, and nothing bad’s happened. Yet. Maybe the few seconds it takes to test isn’t long enough to make me see the...
by Boydie
Fri Mar 16, 2018 11:07 pm
Forum: hardware
Topic: I've wondered this for thirty years...
Replies: 19
Views: 1029

Re: I've wondered this for thirty years...

By the time the B+ came out (only six months before the Master), Acorn will have been well on the way to designing the Master. The prototype Masters were apparently originally called the Model C (I just missed out on one of the Model Cs from an ex-Acorn guy back in the mid-90s but did get lots of fu...
by Boydie
Fri Mar 09, 2018 1:59 am
Forum: general
Topic: Today I received.....
Replies: 4699
Views: 317146

Re: Today I received.....

Lardo Boffin wrote:
I believe they are the Z80 co processor utility discs so will be on line, probably here

http://mdfs.net/Mirror/Image/AcornCPM/
Certainly look like them. IIRC, don’t they create about 13 or so discs of actual software?
by Boydie
Mon Mar 05, 2018 7:47 pm
Forum: for sale / freebies
Topic: BeebSCSI full size + internal VFS adaptor boards
Replies: 106
Views: 5019

Re: BeebSCSI full size + internal VFS adaptor boards

My board has a row of pins.
by Boydie
Sun Mar 04, 2018 1:15 pm
Forum: for sale / freebies
Topic: BeebSCSI full size + internal VFS adaptor boards
Replies: 106
Views: 5019

Re: BeebSCSI full size + internal VFS adaptor boards

I’d be interested in one of each, please.
by Boydie
Sat Mar 03, 2018 10:27 pm
Forum: hardware
Topic: Good, modern, SCART TV
Replies: 28
Views: 1353

Re: Good, modern, SCART TV

I use an own-brand Tesco (Technika?) one. It’s about 3-4 years old, so not the latest but not obsolete either. 22”, 1080P, SCART, and 2xHDMI. Works great with my Master. And being Tesco own-brand, it’s cheap. IME, SCART just tends to work. I’ve also used a 12 year old 26” Samsung and 9 year old 20” ...
by Boydie
Fri Mar 02, 2018 7:55 pm
Forum: emulators
Topic: Strange hdf creation in VRPC
Replies: 0
Views: 486

Strange hdf creation in VRPC

I've been playing around with creating ide drive .hdf images in VirtualRPC for some time. I'd always assumed that 2Gb was the largest image I could create because that's all I'd been successful with in the past. Today, I tried again to create a 3Gb drive (6144 63 16 512). It worked fine, and formatt...
by Boydie
Thu Mar 01, 2018 9:40 am
Forum: off-topic
Topic: LOL DESCRIPTION
Replies: 606
Views: 61135

Re: LOL DESCRIPTION

Lardo Boffin wrote:
Ooh! Bitstik discs. They are rare.
Bet whoever buys/bought his Bitstick will be miffed. :lol:
by Boydie
Thu Mar 01, 2018 7:26 am
Forum: general
Topic: Maplin Electronics in administration
Replies: 110
Views: 5670

Re: Maplin Electronics in administration

My local store still stocked components, and was handy for just a few resistors/caps in a hurry. Trouble was, they no longer had an in-store catalogue and the website got progressively harder to use. Plus you had to find an assistant over 40 (preferably 50) if you wanted them to have a chance of fin...
by Boydie
Mon Feb 19, 2018 1:07 am
Forum: hardware
Topic: Can I use this to hook my Amiga to the CUB?
Replies: 8
Views: 402

Re: Can I use this to hook my Amiga to the CUB?

By default, Cub monitors take digital RGB, but can be modified to take analogue instead. ISTR it’s links ir switches inside that need to be adjusted. The Micro User published details on how to do it back in the mid-late 80s (either when the Arc came out or when Mike Cook did his chameleon board), bu...
by Boydie
Thu Feb 15, 2018 2:54 pm
Forum: hardware
Topic: Memory for 80286 second processor
Replies: 15
Views: 615

Re: Memory for 80286 second processor

It’s an original Intel chip, ceramic LCC. Apparently, they only made 4 MHz parts for a limited time, back in 1982.
So the board is probably a pretty early example; pictures of other ones have a 6 MHz part.