Search found 39 matches

by BradBrad
Tue Sep 26, 2017 1:18 am
Forum: hardware
Topic: A3010: Bodge wires
Replies: 4
Views: 412

Re: A3010: Bodge wires

Not sure. Just did an A3000 refurb which had pretty bad battery damage but I think it is a totally different layout to an A3010? Maybe you could get a clue where it came off by seeing if the wire left any solder/indent on what it used to be connected to, combined with following the lay of the wire? ...
by BradBrad
Sat Sep 23, 2017 9:56 pm
Forum: hardware
Topic: Gotek Working on A3000 :))
Replies: 13
Views: 906

Re: Gotek Working on A3000 :))

Nice! Are you using Flashfloppy or the £10 Hxc2001 firmware? I don't know if the closed-source Hxc firmware that I downloaded supports OLED but I ordered the board anyway :evil: . Good work!
by BradBrad
Fri Sep 22, 2017 10:13 pm
Forum: hardware
Topic: Gotek Working on A3000 :))
Replies: 13
Views: 906

Re: Gotek Working on A3000 :))

Very nice!
by BradBrad
Fri Sep 22, 2017 8:04 pm
Forum: hardware
Topic: Gotek Working on A3000 :))
Replies: 13
Views: 906

Gotek Working on A3000 :))

Finally got it going. :D Here are a few pointers for anyone else who may be interested: No mods needed to case [-X . Perfect fit. :D Just a little hand drill to 2.5 or 3mm in the holes is the Gotek case to fit the existing drive bolts. Gotek needs flashing with a usb to serial programmer in 3v3 mode...
by BradBrad
Fri Sep 22, 2017 7:20 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

markdryan wrote: your A3000 is configured as 'VSync' whereas mine is configured as 'Mode'.


Lol, I haven't dared touch any jumpers, that may help explain my scart picture being shoved to the right :lol:


Happy to help mate. I couldn't see any more jumpers but if you know of any others then I can have a look.
by BradBrad
Fri Sep 22, 2017 4:04 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

Here are pics of all the links I can see. In addition, the jumper on the ram board is set to 4mb. Good luck. I am still having a nightmare with the Gotek drive on the Arch but a £14, issue 2 Electron off EBay turned up yesterday and is going fine. Heatsink on the ULA and a retrobrite and it will be ...
by BradBrad
Fri Sep 22, 2017 1:42 am
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

Ok. I'll open her up tomorrow and take a few pics.
by BradBrad
Wed Sep 20, 2017 1:09 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

Let me know if you want pics of any jumpers and I will post them. I have to open it up in a day or so again as the Gotek floppy mod was de-railed for a bit due to ........ ..... ... a bad floppy cable :lol: The Gotek drive itself fits sweetly though and looks the business. No changes to the case nee...
by BradBrad
Wed Sep 20, 2017 1:03 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

There is a jumper on the ram board. 2 or 4MB. I left it at 4. Everything else on the mainboard was just left as it was. The machine did have a 2mb board in it before so maybe that helped. Anyway, I just posted the other board back so you should have it tomorrow or Friday. First Class, Signed for. Th...
by BradBrad
Wed Sep 20, 2017 12:58 pm
Forum: hardware
Topic: MOODY EBAY ROMS?
Replies: 3
Views: 299

Re: MOODY EBAY ROMS?

Thanks. The delete key is the one key I can't get working on my refurbished A3000 and I am trying to limit the number of times that I detach and re-attach the ribbon cables :roll: I used the r key on my other roms just fine. Why would these roms shut the computer down so suddenly? Is it trying to pr...
by BradBrad
Tue Sep 19, 2017 11:47 pm
Forum: hardware
Topic: MOODY EBAY ROMS?
Replies: 3
Views: 299

MOODY EBAY ROMS?

Hi All, Just a quick one. Bought these off Ebay for about £15. They were sold as 'new and unopened'. Not sure about that given the state of the pins (very dull with marks on :shock: ). Do they look genuine to those in the know? They were sold as RISCOS 3.11. When I tried them in my A3000, it got as ...
by BradBrad
Tue Sep 19, 2017 8:11 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

Cool. Yeah. I just found it. Will post tomorrow morning.
by BradBrad
Tue Sep 19, 2017 2:29 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

Good show Dave =D> =D> =D> The RAM arrived this morning and the first one opened posts as 4096K :) Going to let it run a bit... Please let me know where to send the second board back to. I have also swapped out the dodgy Conner drive for another (probably equally dodgy :lol: ) Conner drive which cam...
by BradBrad
Sun Sep 17, 2017 11:35 am
Forum: hardware
Topic: Open source firmware for Gotek floppy emulator released
Replies: 56
Views: 3131

Re: Open source firmware for Gotek floppy emulator released

Hi, Do you have that working on an Archimedes by any chance? Do you know if is it the same/better/worse than the hxc2001 firmware? Sorry for all the questions but I have 3 Goteks in total. One is flashed to hxc2001 (cost £10 online for the firmware) and is working well in an Atari 1024STF. The other...
by BradBrad
Sun Sep 17, 2017 12:16 am
Forum: hardware
Topic: Acorn A3000 Address exception on boot
Replies: 12
Views: 585

Re: Acorn A3000 Address exception on boot

If it helps, I made a cheap scart cable from info here:

viewtopic.php?t=3750

It works well but I probably have to change a jumper or something as the whole picture is shifted to the right a bit on my lcd tv when compared to composite video out.
by BradBrad
Sat Sep 16, 2017 11:14 am
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

Hi Dave, I am very interested. How would I arrange? Paypal? Can't PM yet as too new :lol: I tried sending an email too. Thanks.
by BradBrad
Fri Sep 15, 2017 3:39 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Re: Acorn 3000 4mb Ram Expansion

Sorry, it is an ACORN A3000. The keyboard on my phone sucks :lol:
by BradBrad
Fri Sep 15, 2017 3:36 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 1854

Acorn 3000 4mb Ram Expansion

Hi All, My A3000 currently has a 2mb ram module in it. The machine posts as 2mb so not sure if there is on onboard ram in addition to the module or not :shock: Anyway, I am looking to upgrade it to 4mb (mostly so I can run ADFFS) I can't find anything on Ebay. Does anyone know if it would be easy / ...
by BradBrad
Fri Sep 15, 2017 8:01 am
Forum: hardware
Topic: BBC Model B takes up smoking
Replies: 39
Views: 1442

Re: BBC Model B takes up smoking

Hi. I made a video a while back showing how to replace the caps if you are feeling brave. The biggest faff is getting the PSU board out of the housing. The kits are widely available and usually include the 3 capacitors and a couple of cable ties. They are cheap. I am not sure if there are any bleede...
by BradBrad
Thu Sep 14, 2017 8:34 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Thanks. Think i'll give it a go anyway. It is much better now than when I received it but that isn't saying much :lol: Still very grubby. Filled the hole in the keyboard with a 3d printed part and put the 3d printed key on the new keyswitch. At least it is all in one piece now. Pics attached. If any...
by BradBrad
Thu Sep 14, 2017 1:18 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Thanks for all the help.

It was IC18. Replaced and working fine. Now just to replace the missing key...

I designed the best approximation as I could in sketchup anf 3d Printed it in black PLA. The switch from EBay just arrived too :D

Do you retrobrite these cases or just use bleach?
by BradBrad
Sat Sep 09, 2017 7:10 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Here are some 'scope waveforms from my BBC B. Mark Thanks Mark. I finally dug out my 'scope and my old 10x probe. I can see what looks like 500mv peak to trough at 1mhz on pin 7 of IC18 (I see that whether or not I issue the SOUND command) :lol: 20170909_190011.jpg I get complete garbage on pin 8 o...
by BradBrad
Fri Sep 08, 2017 3:29 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Of course, I'll have to build a joystick for it now too :shock:
by BradBrad
Fri Sep 08, 2017 3:28 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Quick update on the Archimedes. Bought a game on floppy (new and boxed :shock: ) Magic Pockets. Runs and plays fine (pic attached). Just have to figure out why the scart cable shifts everything on screen to the right a bit but the composite doesn't. Still waiting for the IDE to SD card adapter. Wond...
by BradBrad
Thu Sep 07, 2017 11:53 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Cool guys. Thanks. Will try the suggested tests and see what I can find.... :D
by BradBrad
Thu Sep 07, 2017 7:48 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Indeed, negative from a capacitor or anywhere else near where you're measuring a signal. Failing that from anything else on ground - big metal bits etc... An oscilloscope is measuring relative to your ground connection. d. Thanks Daniel. I don't have an isolation transformer. Is that still OK? Sorr...
by BradBrad
Thu Sep 07, 2017 3:28 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

If you have a 'scope, now is the time to learn how to use it to fault find :wink: Mark Wow, that is detailed! Thanks for taking the time with that. :D So far, I have always restriced myself to using the 'scope on things that have no earth pin connection. So ground the scope to a nearby negative on ...
by BradBrad
Thu Sep 07, 2017 12:01 am
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

What test equipment do you have? Mark Cheers Mark, I reflowed that chip, reflowed the pins that connect to the speaker cable, tested with another speaker and tested the speaker cable. No difference. :? I have a DMM, an old 20MHz Hameg scope (which I am a novice with), a variable bench power supply ...
by BradBrad
Mon Sep 04, 2017 11:56 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Thanks Mark. Yup the speaker is connected and -5v present. I even swapped out and socketed IC17 (LM324) as I read it can cause issues. Turning the little yellow pot near the audio circuitry definitely does something. I can hear all the whirring noises on the circuit itself and turn the volume of tha...
by BradBrad
Mon Sep 04, 2017 6:29 pm
Forum: introduce yourself
Topic: Archie Noob. Completed Restoration and could use some help
Replies: 48
Views: 1864

Re: Archie Noob. Completed Restoration and could use some help

Thanks but going to wait fot the SD to IDE to arrive from China. :cry: Going round in circles and don't want to sacrifice any more Amiga discs (or my sanity lol). Going to turn my attention back to this now. Got it from the Centre for Computing HIstory if you can believe that. What a state! :lol: Ha...

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