Search found 16 matches

by Pasty
Fri Sep 08, 2017 9:08 am
Forum: emulators
Topic: Using a real HDD with Arculator
Replies: 5
Views: 1636

Re: Using a real HDD with Arculator

Hi I have got Windows 10 and not Linux or Raspbery pi unfortunately. I was just wondering if a disc image using something like Paragon might be equivalent to an hdf file?
by Pasty
Thu Sep 07, 2017 3:20 pm
Forum: emulators
Topic: Using a real HDD with Arculator
Replies: 5
Views: 1636

Using a real HDD with Arculator

I have 2 archimedes with battery damage so I would like to use an emulator and use the files I have on the various HDD on those machines. Could I use a backup program to take an image of a HDD and then save this as an HDF file ? If not does anyone know how to achieve this?
by Pasty
Mon Sep 04, 2017 3:38 pm
Forum: for sale / freebies
Topic: Acorn Desktop C complete
Replies: 1
Views: 795

Acorn Desktop C complete

I have the Acorn Desktop C complete including the 4 discs - Installation Disc, Reference Disc, Boot Disc and Work Disc. 2 manuals, 4 reference cards. I am open to offers. See attached photo.
by Pasty
Mon Sep 04, 2017 8:00 am
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

Many thanks to all who have tried to help and for a time progress was made and I got to the desktop with a seemingly working CMOS. However having checked IDE tracks which all seemed OK and replaced the mobo in the case I have no POST and no video output. Very strange ! I have checked over several th...
by Pasty
Wed Aug 30, 2017 12:21 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

I have tried tracing the IDE tracks with a multimeter. They all seem to check out OK except that my board is a little different - It does not have the chip just above the ROM5 socket and in this area I have 8 Roms (I think that is what they are) so I cannot check that last connection. I have put the...
by Pasty
Tue Aug 29, 2017 2:50 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

I have tried your suggestion to clean the kbd and that has done the trick - I now go to desktop (photo attached). PROGRESS! But my floppy will not work it just says drive empty when I put a disk in and fire it up ( It worked a week ago when I ocassionaly managed to get to the desktop). I also have a...
by Pasty
Tue Aug 29, 2017 1:01 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

OK I have the new chip ( I ordered 8583P which seems about twice the size of the original but I managed to solder it in by bending the legs somewhat. Pins 6 and 7 got soldered together but I think pin 7 has no connection so left it). When I power on + DEL it goes to the supervisor prompt but I can c...
by Pasty
Fri Aug 25, 2017 3:39 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

OK I have ordered the chip and will report back when I have done it. Thanks to everybody for everything so far.
by Pasty
Fri Aug 25, 2017 2:42 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

Yes pin 5 of 8583 connects to pin 44 on IC8 and pin 6 of 8583 connects to pin 45 of IC8.
by Pasty
Fri Aug 25, 2017 12:17 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

OK I have put the scope on pin 2 and got a sine wave with a bump on it at a frequency of approx 30kHz so I guess the X5 is OK? There is also a clock signal but the freq is too high to measure. I can get another 8583 if that is the next move and I pressume the best way to fit it is to cut the existin...
by Pasty
Fri Aug 25, 2017 9:21 am
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

Ok I have cleaned up the board with white vinegar, rinsed it off and dried it in the sun and gently with a heat gun. I have checked the continuity of all the tracks that looked bad and all seem OK. I have mounted the mobo back in the case and switched on - no video output. I left it for about 10 min...
by Pasty
Fri Aug 25, 2017 7:24 am
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

Thanks for those very helpful replies. I will do the clean up and then test the tracks for continuity where possible but I am not sure about the best method to make repairs. I could try soldering fine wire to bridge damaged sections but the tracks are very fine! Any ideas on the best approach? The f...
by Pasty
Thu Aug 24, 2017 3:42 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

Hi I have attached photos of the area. I can see some corrosion on the tracks - the camera is better than my eyesight. Del + power on does not go to desktop.
by Pasty
Thu Aug 24, 2017 3:07 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

Hi again

I do have a multimeter but I don't know which pins to test on the 8583? I have got it to start at the supervisor and looked at the status and modules ( see attached images). I have seen that No Boot is set but doing *configure boot makes no difference? Does this help the investigation?
by Pasty
Thu Aug 24, 2017 12:37 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Re: Resurrecting A5000

Hi again The machine did initialise and get to the desktop with the mouse working but the kbd did not work ( This happened before I changed the battery but not always ). I now find that it behaves erratically. Sometimes I have no video output but the kbd lights up and sometimes when I power on it ju...
by Pasty
Wed Aug 23, 2017 3:02 pm
Forum: hardware
Topic: Resurrecting A5000
Replies: 41
Views: 3690

Resurrecting A5000

Hi I am trying to resurrect an old A5000. I did manage to get it to initialise and get to the desktop but the kbd did not work although the mouse did. I have replaced the cmos battery with a separate AAA rechargeable to be on the safe side but there was very little if any damage around it. I am now ...