Search found 44 matches

by CJE-4D
Wed Jul 25, 2018 1:59 pm
Forum: hardware
Topic: PAL, MCU, EPROM, Flash programmer recommendations please?
Replies: 7
Views: 245

Re: PAL, MCU, EPROM, Flash programmer recommendations please?

Thanks for the replies. I've found the TL866 with a set of adaptors available from the UK for only £2 more than the Chinese listing Gerald found. https://www.ebay.co.uk/itm/TL866II-Plus-USB-Universal-Programmer-EFPROM-FLASH-8051-AVR-MCU-GAL-PIC-Kit/362327119196?epid=8019725463&hash=item545c61155c:g:...
by CJE-4D
Wed Jul 25, 2018 9:38 am
Forum: hardware
Topic: PAL, MCU, EPROM, Flash programmer recommendations please?
Replies: 7
Views: 245

PAL, MCU, EPROM, Flash programmer recommendations please?

For some Acorn & RISC OS projects I'm looking for a programmer, recommendations please? I'd like to get one that will do: 22v10 PLD 24 pin DIP SST39SF020 Flash RAM 32 pin PDIP ATTINY45 8 Pin Microcontroller 2764/27128 etc EPROMs I've found:https://www.ebay.co.uk/itm/TL866A-Universal-USB-MiniPro-EPRO...
by CJE-4D
Thu Mar 01, 2018 2:19 pm
Forum: hardware
Topic: Using an FPA10 @ 33MHz
Replies: 3
Views: 482

Re: Using an FPA10 @ 33MHz

Thanks for the suggestion and info. I've had more information from the previous owner that they are not sure if they ever actually used it! So I think 25MHz use is appropriate.
by CJE-4D
Wed Feb 28, 2018 4:35 pm
Forum: hardware
Topic: Using an FPA10 @ 33MHz
Replies: 3
Views: 482

Using an FPA10 @ 33MHz

I've an FPA10 that has come out of a 33MHz A5000. AIUI the FPA10 is rated for 26MHz use and the FPA 11 at 33MHz. I presume the A5000 will have been running it at 33MHz. Any suggestions for software to test the FPA10?
IIRC !Sick will confirm its presence.
by CJE-4D
Tue Nov 21, 2017 5:17 pm
Forum: hardware
Topic: RiscPC lost network access
Replies: 34
Views: 1703

Re: RiscPC lost network access

David, what IDE devices do you have?
We've seen your sort of problem when the IDE drive was Compact Flash or an IDE-SD adaptor.
by CJE-4D
Thu Nov 16, 2017 1:38 pm
Forum: hardware
Topic: RiscPC lost network access
Replies: 34
Views: 1703

Re: RiscPC lost network access

RISC OS defaults to a mask of 255.0.0.0
If the masks on other parts of the network (often 255.255.255.0) are different then Broadcasts of Shares will appear but data transfers won't work.
Chris
by CJE-4D
Tue Sep 26, 2017 7:50 pm
Forum: hardware
Topic: Acorn 3000 4mb Ram Expansion
Replies: 46
Views: 2702

Re: Acorn 3000 4mb Ram Expansion

paulv wrote:ISTR there are some 4MB RAM expansions for the A3000 that require a small flying lead...

Paul
Flying leads are used by 3MB upgrades they probably have 24 chips. 4MB upgrades never had a flying lead.
No motherboard jumpers to change for any RAM expansion (1, 3 or 4MB) that I know of.
by CJE-4D
Tue Aug 15, 2017 4:00 pm
Forum: hardware
Topic: SmallyMouse2 - Universal USB to Quadrature mouse converter
Replies: 62
Views: 5520

Re: SmallyMouse2 - Universal USB to Quadrature mouse converter

IanS wrote:Do you know who is doing the manufacturing for CJE?
Castle!

No not that Castle, but Castle Technologies in Stranraer!

n.b. we now have good stock of the assembled and programmed boards but only a few cases at present, we are having to wait until mid September for more case:-(

Chris
by CJE-4D
Wed Jul 12, 2017 2:56 pm
Forum: hardware
Topic: Fitting an external keyboard to A3010/A3020
Replies: 4
Views: 662

Re: Fitting an external keyboard to A3010/A3020

Great work.

Trying to keep things all inside the box for A3010/A3020's with duff keyboard controllers. I wonder if there is a way to connect a standard A3x00 keyboard up to the Archimedes type input.

I know of an as yet unpublished laptop keyboard (FFC connection) to USB interface...
by CJE-4D
Thu Sep 15, 2016 12:25 pm
Forum: off-topic
Topic: LOLPRICE
Replies: 2807
Views: 224366

Re: LOLPRICE

Unsurprisingly the "ACORN VINTAGE COMPUTER A3010" that sold for £2,550.00 has been relisted saying "RE LISTED DUE TO NON PAYMENT FRAUDULENT BIDDER." http://www.ebay.co.uk/itm/ACORN-VINTAGE ... 2248114757
by CJE-4D
Tue Sep 06, 2016 10:55 am
Forum: hardware
Topic: 5.25" Drive on RiscPC. Actilead wanted?
Replies: 3
Views: 357

Re: 5.25" Drive on RiscPC. Actilead wanted?

RobC wrote:I'm pretty sure I have an Actilead but unfortunately, part of the lead or connector has been cut off.

However, it may be possible to repair it if you're absolutely desperate.
We probably could repair it. so I would love it please.

I suspect you know the address!

Chris
by CJE-4D
Mon Sep 05, 2016 4:33 pm
Forum: hardware
Topic: 5.25" Drive on RiscPC. Actilead wanted?
Replies: 3
Views: 357

5.25" Drive on RiscPC. Actilead wanted?

We are trying to help someone who is replacing an A5000 with a RiscPC. He has a 5.25" drive connected to his A5000 and needs to continue to be able to read and write ADFS 5.25" discs. IIRC an Actilead was the preferred solution, does anyone have an Actilead they no longer need? (I expect to pay) Or ...
by CJE-4D
Mon Sep 05, 2016 11:50 am
Forum: hardware
Topic: Baildon Electronics IDE Interfaces - Replication
Replies: 123
Views: 11628

Re: Baildon Electronics IDE Interfaces - Replication

I have no idea what changes, if any, that APDL made to the IDE system. I gave Dave Holden a copy of the IDE source code, and permission to make changes to that source code for support purposes, and to apply his own branding for sales purposes. However, I did not give or sell him any rights in the c...
by CJE-4D
Sat Aug 27, 2016 11:40 am
Forum: off-topic
Topic: LOLPRICE
Replies: 2807
Views: 224366

Re: LOLPRICE

Looking at the feedback received by the seller and the photos (It does look in very good condition and does have some rare extras), it looks to me like a genuine sale and not money laundering. How genuine the buyers are we probably will never know! Chris Evans
by CJE-4D
Mon Jun 27, 2016 7:58 am
Forum: hardware
Topic: Atom, BBC BASIC Conversion and IC3
Replies: 3
Views: 405

Re: Atom, BBC BASIC Conversion and IC3

Thanks for the info Kees and Roland.
by CJE-4D
Sat Jun 25, 2016 3:39 pm
Forum: hardware
Topic: Atom, BBC BASIC Conversion and IC3
Replies: 3
Views: 405

Atom, BBC BASIC Conversion and IC3

How rare is the "Atom/BBC BASIC Conversion card 202,007 iss.1" daughter board?
I've just bought an atom with one fitted!
The daughter board is fully populated except for IC3. What can IC3 be used for?
My google searches have so far failed to find the answer.
by CJE-4D
Sat Jun 25, 2016 3:34 pm
Forum: hardware
Topic: Acorn keyboard test programs
Replies: 6
Views: 982

Re: Acorn keyboard test programs

No, but i think it just scanned the keyboard in assembler, so i could write it when i get 10 minutes (not today). In an ideal world a test program would require a number of presses, say two or three and report if they were very close together! I'm thinking of when a key is dodgy and when it does re...
by CJE-4D
Thu Jun 23, 2016 4:17 pm
Forum: hardware
Topic: Acorn keyboard test programs
Replies: 6
Views: 982

Re: Acorn keyboard test programs

tricky wrote:I wrote this in the 80s, there is a faster version somewhere, I'll have a look.
http://www.retrosoftware.co.uk/forum/vi ... =888#p6458
Did you ever find the later version?
by CJE-4D
Wed Jun 22, 2016 3:01 pm
Forum: hardware
Topic: FPA detection on RISC OS 2.01
Replies: 9
Views: 705

Re: FPA detection on RISC OS 2.01

Just to be sure; you did load the FPE400 module? See installation instructions . We do realise C programs etc will need the FPE module loaded but thought the test programs would have talked directly to the hardware. So we loaded FPE and the FPA works Hallelujah! We now realise that we hadn't needed...
by CJE-4D
Mon Jun 20, 2016 10:26 am
Forum: hardware
Topic: FPA detection on RISC OS 2.01
Replies: 9
Views: 705

Re: FPA detection on RISC OS 2.01

FPU ticked, but still no joy:-(

Thanks for the ideas.
by CJE-4D
Sat Jun 18, 2016 12:17 pm
Forum: hardware
Topic: FPA detection on RISC OS 2.01
Replies: 9
Views: 705

Re: FPA detection on RISC OS 2.01

Thanks Zarchos for the pointer. I found it in:http://www.stardot.org.uk/forums/viewto ... ilit=armsi.

Unfortunately the FPA is not detected in the R260 or a 25MHz A5000:-(
by CJE-4D
Sat Jun 18, 2016 11:39 am
Forum: hardware
Topic: FPA detection on RISC OS 2.01
Replies: 9
Views: 705

FPA detection on RISC OS 2.01

How can I confirm an FPA10 is working on a R260 with RISC OS 2.01? !Sick's help file notes that FPA low level detection has been disabled in V 1.28 (The latest?) [1] RISC OS 2 doesn't seem to have come with a BASIC64 Any suggestions? Moving the FPA10 into an A5000 will allow to to confirm detection ...
by CJE-4D
Thu May 26, 2016 9:18 am
Forum: hardware
Topic: ebay madness or am I missing something?
Replies: 2
Views: 350

ebay madness or am I missing something?

I know items can sell and sell well on ebay that seem to have little or no use but can anyone think of a use for:
http://www.ebay.co.uk/itm/ACORN-BBC-Box ... 1950002911
Two people bid it up so that the winner paid 16.51 GBP inc post
Madness or am I missing something?
by CJE-4D
Thu May 26, 2016 9:12 am
Forum: hardware
Topic: Can you still get BBC B, Atom etc kits to self build ?
Replies: 5
Views: 740

Re: Can you still get BBC B, Atom etc kits to self build ?

The Atom was available as a kit. But I've never heard of anyone reproducing the PCB after Acorn stopped production.
The closest the BBC being available as a kit, was to buy a Model A and upgrade to Model B spec with a kit from people such as ourselves "CJE Microcomputers" (as we were know then!)
by CJE-4D
Tue Mar 15, 2016 3:03 pm
Forum: stardot.org.uk
Topic: PM's
Replies: 14
Views: 2077

Re: PM's

Yes I understand about the 25 to start a PM conversation but to have to have that score to reply to one sent by someone else seems bizarre!
by CJE-4D
Tue Mar 15, 2016 1:24 pm
Forum: stardot.org.uk
Topic: PM's
Replies: 14
Views: 2077

Re: PM's

PM related I can't send PM's "Compose message We are sorry, but you are not authorised to use this feature. You may have just registered here and may need to participate more to be able to use this feature." Which I quite understand, but someone PM'd me and I can't see a way of replying. Surely the ...
by CJE-4D
Wed Jan 20, 2016 1:08 pm
Forum: hardware
Topic: Acorn keyboard test programs
Replies: 6
Views: 982

Acorn keyboard test programs

Anyone know of test programs for Acorn Keyboards? And where they can be downloaded from? I'm sure I should have been able to find them with forum search or google. I think I must be on the wrong wave length! I'm looking for the type were it shows the keyboard layout on screen and when you press a ke...
by CJE-4D
Wed Dec 23, 2015 11:34 am
Forum: hardware
Topic: Sourceing spare pins for Watford/ATPL ROM boards
Replies: 8
Views: 940

Re: Sourceing spare pins for Watford/ATPL ROM boards

I realised that the turned pin to pin strips are the same as we used in our A3010 4MB expansion board. After a bit of delving at the back of our Tardis we found we still had unused stock! So we bought some turned pin socket strips and now have repair kits in stock! http://www.cjemicros.co.uk/micros/...
by CJE-4D
Wed Oct 28, 2015 1:37 pm
Forum: hardware
Topic: Sourceing spare pins for Watford/ATPL ROM boards
Replies: 8
Views: 940

Re: Sourceing spare pins for Watford/ATPL ROM boards

Brilliant. That has saved us a lot of time, thanks very much.

Once we have stock I'll add them to our product list as a repair kit!
by CJE-4D
Tue Oct 27, 2015 5:31 pm
Forum: hardware
Topic: Sourceing spare pins for Watford/ATPL ROM boards
Replies: 8
Views: 940

Re: Sourceing spare pins for Watford/ATPL ROM boards

Thanks (That was extremely quick I was still editing the post to correct my mistakes) we should have done some lateral thinking. Is the 2mm shim for both APDL and Watford? I'll have a look again at Farnell's site in the morning, unless someone has the part number to hand for the strip (I think we'll...