Search found 689 matches

by JonC
Wed Jan 09, 2019 5:19 pm
Forum: hardware
Topic: A3000-to-A5000 ROM adapter
Replies: 28
Views: 1373

Re: A3000-to-A5000 ROM adapter

RobC wrote:
Wed Jan 09, 2019 4:27 pm
This is great =D> =D> :D

I have several spare A5000 8MB upgrades and I'd love to fit one to my A3000.
Umm, wouldn't that require an extra MEMC1a? or did I miss something.
by JonC
Tue Jan 08, 2019 12:37 pm
Forum: off-topic
Topic: Xilinx lawyers
Replies: 15
Views: 545

Re: Xilinx lawyers

Finally, it's worth noting that 'fair use' is defined both for trademarks and for copyright, but differently. The case in point is a trademark issue. There's also a difference between Trademarks (tm) and Registered Trademarks (R) Typically to use either you normally have to obtain written permissio...
by JonC
Mon Jan 07, 2019 1:03 pm
Forum: hardware
Topic: "Arcflash" A3000/A3xx/A4xx/A5xx/A5000 in-system programmable ROM -- any interest?
Replies: 80
Views: 2650

Re: A3000 in-system programmable ROM -- any interest?

Another option would be to see if I can allow the host machine to switch banks, so it can access the whole 16MB (maybe with a fixed 1-2MB and a paging area above that). I don’t think the fast serial port option I was talking about will work, but paging might. If you've got 16Mb to play with, that p...
by JonC
Sat Jan 05, 2019 1:47 pm
Forum: hardware
Topic: AP6 curious behaviour
Replies: 25
Views: 1087

Re: AP6 curious behaviour

If you wanted to add hard drive support you'd have to pick something to remove so that it would fit. The ADFS ROM is full Full FULL!!!! Or maybe split it accross two ROMs? (I think I read this somewhere, probably in this forum). Having both an AP5&6 gives me plenty of SWROM\RAM sockets. Doesn't the...
by JonC
Wed Jan 02, 2019 6:45 pm
Forum: hardware
Topic: Baildon Electronics IDE Interfaces - Replication
Replies: 157
Views: 15729

Re: Baildon Electronics IDE Interfaces - Replication

AndyMc1280 looks to have the latest f/w. Maybe drop him a PM if Dave can't locate;
viewtopic.php?f=16&t=15205&hilit=V6C&start=60#p217574
by JonC
Sun Dec 16, 2018 6:24 pm
Forum: hardware
Topic: A3010 default jumper settings
Replies: 1
Views: 126

Re: A3010 default jumper settings

You could try reversing step 4 on this upgrade tutorial;
http://www.8bit-homecomputermuseum.at/r ... grade.html

Edit: There's also this on Chris' Acorns;
http://chrisacorns.computinghistory.org ... grades.pdf
by JonC
Fri Dec 14, 2018 1:11 pm
Forum: hardware
Topic: New A3000 4MB memory
Replies: 71
Views: 3401

Re: New A3000 4MB memory

Not had chance to test mine yet, but looks good! :D
by JonC
Tue Nov 27, 2018 9:14 pm
Forum: hardware
Topic: Need help with BBC just picked up please
Replies: 169
Views: 3750

Re: Need help with BBC just picked up please

Hi all Its finally beaten I have tried to repair any damage IMG_20181127_202016.jpg also a couple of the pads on the otherside won't solder anymore I have spent a lot of time on it and it is now beyond my limited knowledge so if anyone would like to take this project on for themselves pm me with an...
by JonC
Wed Nov 21, 2018 3:58 pm
Forum: off-topic
Topic: Cleaning PCBs
Replies: 24
Views: 1455

Re: Cleaning PCBs

daveejhitchins wrote:
Wed Nov 21, 2018 3:41 pm
1024MAK wrote:
Wed Nov 21, 2018 3:01 pm
Trickle, flood, storm surge...??? :lol:
snip.. well . . .

Dave H :D
Deep subject those. :roll: :lol:
by JonC
Tue Nov 20, 2018 9:26 pm
Forum: off-topic
Topic: Cleaning PCBs
Replies: 24
Views: 1455

Re: Cleaning PCBs

I see your point, but plates and most cutlery don't have annoying little crevices for stuff to get stuck in, just saying! :shock: :lol:
by JonC
Tue Nov 20, 2018 8:22 pm
Forum: off-topic
Topic: Cleaning PCBs
Replies: 24
Views: 1455

Re: Cleaning PCBs

I have to ask, don't you get food residue stuck under the components if it's been through a Dishwasher? :lol:
It just seems vaguely unhygenic for some reason! :wink:
by JonC
Mon Nov 19, 2018 7:53 pm
Forum: hardware
Topic: Replacement fan for A310
Replies: 5
Views: 251

Re: Replacement fan for A310

To be honest, unless you're fitting something that chucks out a bit of heat (like a mechanical HDD), there's probably not much point as long as the box is well ventilated.
by JonC
Sun Nov 18, 2018 6:55 pm
Forum: hardware
Topic: "Arcflash" A3000/A3xx/A4xx/A5xx/A5000 in-system programmable ROM -- any interest?
Replies: 80
Views: 2650

Re: A3000 in-system programmable ROM -- any interest?

I'll update my numbers seeing as everyone's getting their orders in! :lol:

1 x A3000
1 x A3020
2 x A5000 (1's an Alpha)
1 x A440
2 x A310
1 x RISCPC

So when's the factory opening? :wink:
by JonC
Sat Nov 17, 2018 11:35 am
Forum: hardware
Topic: "Arcflash" A3000/A3xx/A4xx/A5xx/A5000 in-system programmable ROM -- any interest?
Replies: 80
Views: 2650

Re: A3000 in-system programmable ROM -- any interest?

Very interested in 1 or more of these please! :)
by JonC
Thu Nov 15, 2018 12:59 pm
Forum: general
Topic: How much of this is just rose-tinted specs?
Replies: 21
Views: 739

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

This pretty much sums current technology in society for me;
https://cdn.geckoandfly.com/wp-content/ ... idiots.jpg

30 Years ago we ran computers, now they run us.
by JonC
Thu Nov 15, 2018 12:52 pm
Forum: hardware
Topic: Big Box Archimedes Battery holders
Replies: 8
Views: 951

Re: Big Box Archimedes Battery holders

My A310 has battery leakage and I'll need to replace the holder. I'm OK with soldering, but I'm wondering about the push rivets, as I'm not familiar with those. What exact type do I need? Or could I instead replace with a screw? I just used 3M style Velcro. It's not actually Velcro but hold much be...
by JonC
Mon Oct 08, 2018 12:33 pm
Forum: stardot.org.uk
Topic: Bounties
Replies: 20
Views: 1049

Re: Bounties

I don't know how we would make it work, but I'd be happy to invest some newer Econet/Ethernet/RiscOS hardware. Same here. Maybe a central donations pot (or the ABug pot) would be the right way to go? Set up a 'Donate' paypal account, and then we could have votes on how those funds are spent. Even g...
by JonC
Sun Oct 07, 2018 12:21 pm
Forum: stardot.org.uk
Topic: Bounties
Replies: 20
Views: 1049

Re: Bounties

If the prevailing sentiment is that this isn't wanted/needed, that's fine. Just think a trick is being missed here and there may be some missed opportunities.

edited for typos
by JonC
Sat Oct 06, 2018 7:53 pm
Forum: stardot.org.uk
Topic: Bounties
Replies: 20
Views: 1049

Re: Bounties

The idea I had was to promote the most wanted things by listing them and letting people bid on them. That way if people really want them, the 'reward' price will go up and up. If money is a motivator for someone, then they claim it. At the end of the day if time is a commodity you don't have (I know...
by JonC
Sat Oct 06, 2018 3:21 pm
Forum: stardot.org.uk
Topic: Bounties
Replies: 20
Views: 1049

Bounties

Not sure if this has been discussed before here, so if so my apologies. There are a lot of greate developments going on at the moment by a few people, and to support them (as I do not have the skillsets myself), I think it could help productivity to be able to contribute a bit of cash for their effo...
by JonC
Sat Oct 06, 2018 11:38 am
Forum: hardware
Topic: New hardware suggestion - Pi econet server
Replies: 51
Views: 2144

Re: New hardware suggestion - Pi econet server

If it's a question of funds, I'm more than happy to contribute to something like this which helps everyone. But if it's skills as others have said, I'm out of my depth there.
by JonC
Wed Oct 03, 2018 4:30 pm
Forum: general
Topic: Today I received.....
Replies: 5017
Views: 364207

Re: Today I received.....

.... Econet and IDE goodies from IanS.

Thankyou kindly!
by JonC
Tue Oct 02, 2018 5:25 pm
Forum: off-topic
Topic: Desktop protection for electronics work
Replies: 13
Views: 777

Re: Desktop protection for electronics work

I've just ordered one of these . Interesting description> The pad may have dust or other appearance minor defect.It does not affect the function. Please make sure that you don't care that.Thank you. I shall report back. Seems a bit small for a lot of Acorn mainboards (especially the Archies), maybe...
by JonC
Sun Sep 30, 2018 1:23 pm
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2728
Views: 239749

Re: Worth Taking a Look At

Econet in 'several' boxes: aka old skool econet! ;
https://www.ebay.co.uk/itm/An-Acorn-Eco ... Swbehbp-qP
by JonC
Sat Sep 29, 2018 6:12 pm
Forum: for sale / freebies
Topic: For Sale: Econet bits
Replies: 11
Views: 879

Re: For Sale: Econet bits

Hi

Could I have a podule and 5 x T peices please?

Cheers!
by JonC
Sat Sep 29, 2018 6:00 pm
Forum: for sale / freebies
Topic: For Sale: IDE Podules again
Replies: 22
Views: 1049

Re: For Sale: IDE Podules again

8 bit IDE with DOM if poss please! (V3)

Cheers!
by JonC
Fri Sep 28, 2018 8:15 pm
Forum: hardware
Topic: Cumana SCI
Replies: 3
Views: 210

Re: Cumana SCI

I think the way the terminators work is that you leave them in place if you're not using the external connector and then terminate the end of the internal chain. I don't think you can toggle termination in software with these as you can with some podules (e.g. Powertec). The terminators will act as...
by JonC
Wed Sep 26, 2018 7:41 pm
Forum: hardware
Topic: Fixed: A3000 black screen on power on
Replies: 18
Views: 546

Re: A3000 black screen on power on

Do any of the keyboard lights work? Caps Lock etc? Do they flash on power up?

If not, it suggests there's an issue with the connection somewhere along the way. Maybe double check the traces from the connectors as they are pretty close to the horrible green gunk! :)
by JonC
Wed Sep 26, 2018 7:00 pm
Forum: hardware
Topic: Fixed: A3000 black screen on power on
Replies: 18
Views: 546

Re: A3000 black screen on power on

Might be worth trying to clean the keyboard connector first, probably just dirty?
by JonC
Mon Sep 24, 2018 11:37 am
Forum: hardware
Topic: Fixed: A3000 black screen on power on
Replies: 18
Views: 546

Re: A3000 black screen on power on

Try plugging in the floppy drive. :D

The drive will flash diagnostic fault codes via LED which may help you track down issues.