Search found 14 matches

by reedas
Mon May 25, 2020 11:54 pm
Forum: acorn atom and acorn system series
Topic: CapsLock revisited
Replies: 0
Views: 374

CapsLock revisited

I've added a Caps Lock LED to my Atom and thought I'd share my happiness, at last an LED on the outside. 20200525_212855.jpg 20200525_212838.jpg I used a16v8 in the now empty IC51 socket after I upgraded my memory with a YARRB. IC51 obviously has all the right signals as the caps lock mask is stored...
by reedas
Thu May 21, 2020 9:36 am
Forum: acorn atom and acorn system series
Topic: Replacement power jack for Atom
Replies: 6
Views: 753

Re: Replacement power jack for Atom

Risking the wrath of the Retro Gods (Please [-o< don't send the plague of @'s).

I've just noticed this Cypress dev kit on RS, Its expensive for a barrel connector replacement: £22, but it may be worth having a look at. :twisted:
by reedas
Thu May 14, 2020 4:46 pm
Forum: acorn atom and acorn system series
Topic: Atom GODIL VGA Adapter
Replies: 434
Views: 57981

Re: Atom GODIL VGA Adapter

This is colour test 1 final screen:
20200514_164301.jpg
Andrew :D :D
by reedas
Thu May 14, 2020 3:20 pm
Forum: acorn atom and acorn system series
Topic: Atom GODIL VGA Adapter
Replies: 434
Views: 57981

Re: Atom GODIL VGA Adapter

Hi Dave, Found the short: 20200514_151014.jpg Just got to make some changes to close the case and wait patiently for the gal to turn up for moving the sid register.s I just ordered some anyway as I had an idea about using one in the now empty IC51 socket to decode and latch the shift lock zero page ...
by reedas
Thu May 14, 2020 2:51 pm
Forum: acorn atom and acorn system series
Topic: Atom GODIL VGA Adapter
Replies: 434
Views: 57981

Re: Atom GODIL VGA Adapter

Thanks Dave, All looks good except for: 20200514_141340[1].jpg This looks like a decoding problem and may be an address line (A11?) stuck probably something to do with my brutalisation of the Godil in removing the IDC connectorss. It does draw the top bit before overwriting it. I'll go in and look f...
by reedas
Thu May 14, 2020 12:53 pm
Forum: acorn atom and acorn system series
Topic: Atom GODIL VGA Adapter
Replies: 434
Views: 57981

Re: Atom GODIL VGA Adapter

Hi Dave, Trying to install my Godil VGA 20200514_122645[1].jpg red led flashing at about 1Hz and green led steady on programmer. The board I am working with (from Trenz) has the xc3s500e fpga on it and I am getting programming failed from Impact for the 250e top.blt file in your github repository. T...
by reedas
Wed Apr 29, 2020 8:13 pm
Forum: acorn atom and acorn system series
Topic: Yarrb - redesigned
Replies: 288
Views: 18496

Re: Yarrb - redesigned

You can ask Sir Morris if he has AtoMMC boards available. I don't have any left. @SirMorris, Do you have an ATOMMC board left, I am trying to see if I can adapt your PIC code to run on a cypress psoc6 ARM dev board via the sk8 and using SDDOS/ATOMMC rom, cy8ckitproto.jpg but it would obviously be a...
by reedas
Tue Apr 28, 2020 2:22 pm
Forum: general
Topic: Today I built ...
Replies: 86
Views: 13335

Re: Today I built ...

(That's assuming your adapter maintains the original GODIL pinout) Yes it does, took it from the original schematic. Thanks ! I've just purchased one of the idc GODILs and a 40 pin smd dil adaptor. I thought I would remove the IDCs and solder on the dip but It probably would be less damaging to the...
by reedas
Sun Apr 26, 2020 7:50 pm
Forum: acorn atom and acorn system series
Topic: 3D print Acorn Atom case
Replies: 52
Views: 8763

Re: 3D print Acorn Atom case

Did anyone try printing the issue 4 Keycaps and has the design/dimensions as a model? I have a missing ;+ key and given their scarcity I'm thinking that I could get it printed on a fancy 3d printer at work (whenever they call us back in), but I don't want to risk too much damage pulling one of the g...
by reedas
Tue Apr 21, 2020 3:29 pm
Forum: acorn atom and acorn system series
Topic: Yarrb - redesigned
Replies: 288
Views: 18496

Re: Yarrb - redesigned

Hi Roland,

Do you have any of the YARRB2 boards left? If not are you planning to order more? Although my atom is up and running now the Timedata 32k board gets quite toasty and I feel the need to cool the system down a bit.

Also is it still possible to get the atommc/sddos boards?

Thanks in hope
by reedas
Sun Apr 19, 2020 2:09 pm
Forum: acorn atom and acorn system series
Topic: Thanks for the warm welcome and can you help
Replies: 5
Views: 585

Re: Thanks for the warm welcome and can you help

Turned out to be one of the ram chips maybe as swapping them gave me this... Ta Da
20200419_140534.jpg
:D :D
by reedas
Sun Apr 19, 2020 1:29 pm
Forum: acorn atom and acorn system series
Topic: Thanks for the warm welcome and can you help
Replies: 5
Views: 585

Re: Thanks for the warm welcome and can you help

Thanks for confirming. I have just given it a clean and reseated the chips then booted it up and ... TE DE 20200419_124548.jpg I have an almost working EGOVN ETOM. Data bit dd2/c2 looks to be unhappy. Seems quite stable though running for over an hour while I had my lunch no problems. I do need to s...
by reedas
Sat Apr 18, 2020 9:04 pm
Forum: acorn atom and acorn system series
Topic: Thanks for the warm welcome and can you help
Replies: 5
Views: 585

Thanks for the warm welcome and can you help

Thanks for the warm welcome https://stardot.org.uk/forums/viewtopic.php?f=13&t=19092 , I've been going through the circuit schematic and comparing it to my atom. I have accounted for most of my mods. Like most things you make changes over a period of time and some of the changes you made a while...
by reedas
Fri Apr 17, 2020 3:35 pm
Forum: introduce yourself
Topic: Hello From Cornwall
Replies: 7
Views: 677

Hello From Cornwall

HI, I've just dug my Atom out of the loft and am now in the process of trying to figure out what all the mods I inflicted on it actually do so that I can start to think about getting it working again. I have lots of tapes to convert. The Atom was one of the first lot from Acorn and was a self built ...

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