Search found 426 matches

by Boydie
Mon Sep 30, 2019 9:47 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 978
Views: 77135

Re: MMFS Development and Support

That’s a much better (later?) version of the manual than mine. Mine doesn’t have page 32 onwards. Two thoughts strike me (although I’m not adept enough to implement either). 1) On a Solidisk 256, ZMMFS doesn’t have to look for a free SRAM slot. On startup, banks 8-15 are all empty (although non-exis...
by Boydie
Mon Sep 30, 2019 8:10 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 978
Views: 77135

Re: MMFS Development and Support

It *really* doesn’t like that! :( 48FA3CFC-3E32-4637-846A-C4047D8914BC.jpeg This page of the manual may shed a bit more light as to how the system “works”. 5AED350A-1722-45B7-8BAD-53D7A7EC2919.jpeg I get the feeling that the sideways ram banks don’t actually exist until the Manager loads an image in...
by Boydie
Mon Sep 30, 2019 7:51 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 978
Views: 77135

Re: MMFS Development and Support

Thanks. I’ll give that a try, and let you know how it goes.
by Boydie
Mon Sep 30, 2019 1:28 pm
Forum: acorn atom and acorn system series
Topic: Old poorly Atom
Replies: 7
Views: 630

Re: Old poorly Atom

It lives! It seems to have been a combination of: 1) Bad 6847 (no display) 2) Dodgy 8255 socket 3) Very dodgy keyboard contacts - over half the keys not working. When this includes the Break key, it takes a while before even a working machine can be persuaded to reset. All keys have now been cleaned...
by Boydie
Mon Sep 30, 2019 9:57 am
Forum: acorn atom and acorn system series
Topic: My new poorly Atom
Replies: 86
Views: 2448

Re: My new poorly Atom

I had the same problem last night with my Issue 4 - at least 50% of the keys weren’t working. After liberal IPA squirts, followed by protracted wiggling and hammering of each key, they all work. Typically, it took up to 3 squirts and 30 seconds of jiggling per key, but it worked on all of them.
by Boydie
Sun Sep 29, 2019 7:38 pm
Forum: acorn atom and acorn system series
Topic: Old poorly Atom
Replies: 7
Views: 630

Re: Old poorly Atom

Not been able to test yet. However, there has been (hopefully) significant progress. I've found that if the board is lifted slightly in one corner then I'm sometimes rewarded with a prompt. Tapping around the 8255 also sometimes causes the garbage on the screen to change (admittedly to something tha...
by Boydie
Sat Sep 28, 2019 8:21 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 978
Views: 77135

Re: MMFS Development and Support

Thanks for the suggestions. Sadly, the ?&FE32 trick doesn't work. For the record, I gave up on trying to get ZMMFS to do anything (it just wouldn't) and focused on loading SWMMFS directly into a sideway ram bank instead. I guess the Solidisk's way of handling sram is just too obscure - Exile can't f...
by Boydie
Sat Sep 28, 2019 6:16 pm
Forum: acorn atom and acorn system series
Topic: Old poorly Atom
Replies: 7
Views: 630

Old poorly Atom

Having just got an AtoMMC, I've been having a play with my old atoms. The Issue 5 still lives, but the Issue 4 is a bit more poorly. At first it displayed nothing, but swapping the 6847 brought the display back, but unfortunately that display is garbage. I believe this means the machine is not compl...
by Boydie
Sat Sep 28, 2019 2:18 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 978
Views: 77135

Re: MMFS Development and Support

The easiest solution for me is probably to change one of my 16k roms on the board for a 32k with the sram-only version of mmfs on it as the “backup” and copy that across into sram when I need it. Okay, so that didn't work quite as well as I'd hoped. Copying the "backup" SWMMFS into bank F of SRAM w...
by Boydie
Fri Sep 27, 2019 10:00 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 978
Views: 77135

Re: MMFS Development and Support

Does that Solidisk board use the standard Acorn mechanism to select sideways RAM banks, i.e. the same as selecting a ROM? I had a Solidisk RAM board BITD and the selection of the read bank and write bank were split. It had some flying leads to connect to any four bit latch of your fancy. Their FDC ...
by Boydie
Fri Sep 27, 2019 1:58 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 978
Views: 77135

Re: MMFS Development and Support

Moving the sram module to slots C/D solved the issue on the Integra B. Many thanks. Doesn’t explain why the Solidisk doesn’t work. Every slot on the Solidisk and the mainboard is populated, and the sram sits from slot 8 to slot F, so the first slot found should be sram. Instead, MMFS actually compla...
by Boydie
Fri Sep 27, 2019 1:02 pm
Forum: for sale / freebies
Topic: Offers for charity: Commodore Tractor Printer 4022
Replies: 0
Views: 431

Offers for charity: Commodore Tractor Printer 4022

I’m clearing out some of my unwanted stuff, and this came as part of a bundle. I don’t know whether it works as I have nothing to connect it to, but there is a psu hum when powered up, and the paper feed wheel develops a lot more resistance. In terms of condition, it’s quite yellowed and the corners...
by Boydie
Fri Sep 27, 2019 12:34 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 978
Views: 77135

Re: MMFS Development and Support

I've been trying to get U/ZMMFS (1.44, downloaded last night) working with sideways RAM boards. For some odd reason, the Bootstrap ROM completely ignores all SRAM banks on a Solidisk 256 board (8 banks available, 8-F), and also on my new Integra-B board (standard 4 banks 4-7, plus additional 32K in ...
by Boydie
Mon Sep 23, 2019 7:07 pm
Forum: wanted
Topic: Wanted: Atom key posts / ] key
Replies: 30
Views: 1628

Re: Wanted: Atom key posts / ] key

PM sent
by Boydie
Tue Sep 17, 2019 9:41 pm
Forum: off-topic
Topic: What has happened to Firefox add-ons?
Replies: 37
Views: 2388

Re: What has happened to Firefox add-ons?

What else can I do?? They're working on a patch for the legacy versions (like 56), but obviously it's not a priority. Mike Hoye (a Mozilla engineer I know) makes some appearances in this MeFi thread - https://www.metafilter.com/180725/A-Glitch-Is-Breaking-All-Firefox-Extensions#7695301 - explaining...
by Boydie
Tue Sep 17, 2019 5:17 pm
Forum: acorn atom and acorn system series
Topic: Adding memory to Atom
Replies: 1
Views: 346

Adding memory to Atom

My atoms currently have the full onboard memory. I’ve realised that they can take System expansion cards, and I have quite a few of these knocking about, particularly the 8K static ram/8K rom boards and a CU-DRAM card (https://stardot.org.uk/forums/viewtopic.php?f=32&t=17183 for pics). The 8k ram/ro...
by Boydie
Sat Sep 14, 2019 11:53 pm
Forum: off-topic
Topic: Experiences with 4G broadband
Replies: 16
Views: 764

Re: Experiences with 4G broadband

TP-Link offer a free DynamicDNS service with their routers. Ooh didn't see that. But then I wouldn't actually read the manual would I? [mutter mutter, been using computers since 1985 I don't have to read that mutter mutter] It has a manual? I discovered it by the usual technique of seeing what’s in...
by Boydie
Sat Sep 14, 2019 8:27 am
Forum: off-topic
Topic: Experiences with 4G broadband
Replies: 16
Views: 764

Re: Experiences with 4G broadband

TP-Link offer a free DynamicDNS service with their routers.
by Boydie
Fri Sep 13, 2019 11:14 am
Forum: off-topic
Topic: Experiences with 4G broadband
Replies: 16
Views: 764

Re: Experiences with 4G broadband

we're not in the middle of nowhere but thanks to BT's not-spot (we surrounded by fibre cabinets for miles, but they took our local cabinet away!) I get about 900kb ps max, and I think we're stuck at that level. would you mind sharing the model numbers of the modem/ aeriel bits you ended up with so ...
by Boydie
Thu Sep 12, 2019 6:33 pm
Forum: off-topic
Topic: Experiences with 4G broadband
Replies: 16
Views: 764

Experiences with 4G broadband

This may be of interest to anyone else living in the middle of nowhere. Where I live, the best broadband you can get is ADSL2+ with a real-world speed of 5Mbps. We're about 1.5km from the cabinet so FTTC is unrealistic, even if there were any plans to upgrade the cabinet. FTTP is mooted, but keeps g...
by Boydie
Thu Sep 12, 2019 5:49 pm
Forum: wanted
Topic: Wanted: Atom key posts / ] key
Replies: 30
Views: 1628

Re: Wanted: Atom key posts / ] key

Okay, all posted this afternoon - Large Letter 2nd Class (UK) or International Standard. Postage was £2.80 for the overseas, £1 for UK - just factor it into your donations. On the subject of which, the website is (please don't donate until you've received the items and are happy!): https://secure.ch...
by Boydie
Tue Sep 10, 2019 6:05 pm
Forum: other vintage computer hardware, software and games
Topic: Help needed with VIC20
Replies: 4
Views: 616

Re: Help needed with VIC20

Despite the apparent lack of stardot-level assistance out there for Commodore stuff, I managed to get this working. Turned out to be the Basic ROM. One desoldering of said ROM, fitting a new 24-pin socket, fitting a 2764 into an Ebay-sourced 2764-2364 adapter and Robert's your father's brother! :D O...
by Boydie
Mon Sep 09, 2019 7:43 pm
Forum: wanted
Topic: Wanted: Atom key posts / ] key
Replies: 30
Views: 1628

Re: Wanted: Atom key posts / ] key

Okay,

I’ve finally managed to come up with a (hopefully) secure way to package these.
I’ll aim to get them in the post in Thursday.
by Boydie
Sat Sep 07, 2019 8:23 am
Forum: acorn atom and acorn system series
Topic: AtomSID v1.8 PCB files.
Replies: 13
Views: 1183

Re: AtomSID v1.8 PCB files.

Please put me down for one.
by Boydie
Fri Sep 06, 2019 8:26 pm
Forum: wanted
Topic: Wanted: Atom key posts / ] key
Replies: 30
Views: 1628

Re: Wanted: Atom key posts / ] key

markdryan wrote:
Fri Sep 06, 2019 4:03 pm
> I can spare another 7 - same arrangement as for the others.

Would you happen to have one more spare? The post is broken on the 5 key of my Issue 4 atom.
Yes. Again, for donation to Christie of whatever it’s worth to you.
by Boydie
Fri Sep 06, 2019 8:20 pm
Forum: 8-bit acorn hardware
Topic: Noisy Mode 7 display
Replies: 42
Views: 2432

Re: Noisy Mode 7 display

The display is now perfect in all modes. Touching the crystal no longer has any effect. It’s just run the Elite title screen for several hours without problem, so it seems to be heat stable. After that, Imogen ran without crashing/screen issues. All this with the original ram re-installed. I think i...
by Boydie
Fri Sep 06, 2019 3:05 pm
Forum: wanted
Topic: Wanted: Atom key posts / ] key
Replies: 30
Views: 1628

Re: Wanted: Atom key posts / ] key

Marcus,

I can spare another 7 - same arrangement as for the others.
by Boydie
Fri Sep 06, 2019 3:02 pm
Forum: for sale / freebies
Topic: CC LaserDirect
Replies: 7
Views: 559

Re: CC LaserDirect

If you're sure you don't want it, I'll give it a good home. I'm in WN1 so collection is straightforward.
by Boydie
Fri Sep 06, 2019 12:19 pm
Forum: 8-bit acorn hardware
Topic: Noisy Mode 7 display
Replies: 42
Views: 2432

Re: Noisy Mode 7 display

After running out of things to test/replace, and joints to reflow, I changed IC43...
5E3C614D-9AA3-4967-96A8-519C7EBDFD72.jpeg
Hopefully that’s everything sorted! Now for many hours of testing.

Many thanks to all.
by Boydie
Fri Sep 06, 2019 10:54 am
Forum: 8-bit acorn hardware
Topic: Noisy Mode 7 display
Replies: 42
Views: 2432

Re: Noisy Mode 7 display

Thanks Mark

I’ll run through your instructions and feed back when I find the problem/get to the end...

IC43 pin 6:
EDAA064C-BC64-4112-976F-F5150E2881A2.jpeg

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