Search found 2237 matches

by Prime
Sun Apr 23, 2017 11:39 pm
Forum: hardware
Topic: Valiant turtle control module.
Replies: 1
Views: 12

Valiant turtle control module.

Hi all, I'm currently trying to repair the control module on a Valliant Turtle for use at the Cambrdige meetup. Just so I can check component values does anyone have one that works that they'd be prepared to open and check some resistor values for me. Yes I am aware of http://www.waitingforfriday.co...
by Prime
Fri Apr 21, 2017 7:13 pm
Forum: upcoming and recent events & exhibitions
Topic: Wakefield RISC OS show 22/4/17
Replies: 87
Views: 1872

Re: Wakefield RISC OS show 22/4/17

And I'm here and so is Daniel, just bumped into him checking in.

Cheers.

Phill.
by Prime
Fri Apr 21, 2017 5:46 pm
Forum: upcoming and recent events & exhibitions
Topic: Wakefield RISC OS show 22/4/17
Replies: 87
Views: 1872

Re: Wakefield RISC OS show 22/4/17

Sitting in Trowell services with Lesley drinking a bucket of costa coffee.

Hope to be there between 7 and 8.

Cheers.

Phill.
by Prime
Thu Apr 20, 2017 7:05 pm
Forum: upcoming and recent events & exhibitions
Topic: Wakefield RISC OS show 22/4/17
Replies: 87
Views: 1872

Re: Wakefield RISC OS show 22/4/17

I'm tempted to bring the latest DragonMMC board (and a Dragon) to show that off, but I did want to travel lighter, and have some of DaveM's stuff to return to him. Also as I'm also bringing Sinclair stuff to (hopefully) repair leenew's Spectrum, I don't want to bring any more non-Acorn stuff as it m...
by Prime
Thu Apr 20, 2017 2:46 pm
Forum: upcoming and recent events & exhibitions
Topic: Wakefield RISC OS show 22/4/17
Replies: 87
Views: 1872

Re: Wakefield RISC OS show 22/4/17

Does anyone coming to Wakefield have a UNI GoSDC that they can bring along, please? I'd like to compare it to the one I have that's 'playing-up' somewhat! Dave, Do you want to bring your Atom with you, I need to try and work out why it won't work in 1.7MHz mode and fit protection resistors to the t...
by Prime
Wed Apr 19, 2017 1:25 am
Forum: upcoming and recent events & exhibitions
Topic: Wakefield RISC OS show 22/4/17
Replies: 87
Views: 1872

Re: Wakefield RISC OS show 22/4/17

Would anybody who is attending the show happen to have any of the following spare parts they could bring along to help resurrect a dead speccy? These would be borrowed for an hour or so to help diagnose a fault. If they are available for sale I could purchase them on the day if it helps bring it ba...
by Prime
Sun Apr 16, 2017 3:06 pm
Forum: off-topic
Topic: screws.....
Replies: 4
Views: 149

screws.....

Hi all, Does anyone know where I can get some 3mm dia 7mm long self tapping screws ? All the usual sources B&Q, Screwfix seem to have screws that are either too long or too wide :( In case you where wondering these are the screws that the Dragon 32 / 64 use to hold the power and logic boards int...
by Prime
Wed Apr 12, 2017 9:02 am
Forum: upcoming and recent events & exhibitions
Topic: Wakefield RISC OS show 22/4/17
Replies: 87
Views: 1872

Re: Wakefield RISC OS show 22/4/17

Right I'll be there, Booked into the hotel on friday night so Lesley & I should be arriving sometime that evening depending on traffic. DaveM do you want me to bring the stuff from Bas, and your Olivetti, I could do with getting rid of it, I'll also build you an AtomSID if you want. Anything els...
by Prime
Wed Apr 12, 2017 8:50 am
Forum: hardware
Topic: Suspect ATMEL AT28C256 marked EEPROMs
Replies: 79
Views: 2138

Re: Suspect ATMEL AT28C256 marked EEPROMs

You know you can buy the genuine article from RS? http://uk.rs-online.com/web/p/eeprom-memory-chips/6963165/ < Ducks > :lol: Or Farnell, infact the money you "saved" on buying cheap knock-offs you've wasted in your time trying to get them to work. I've said it before and I'll say it again...
by Prime
Wed Apr 05, 2017 12:00 pm
Forum: hardware
Topic: MaxRAM - New Open Hardware BBC RAM/ROM Board
Replies: 67
Views: 1505

Re: New Open Hardware BBC RAM/ROM Board

Well I guess as you're choice of software is so superior to mine, I won't botheroffering to help again. And yes I'm a little pissed. Phill. What have I said? I have used Eagle in the past and use Kicad these days. Is it offensive to use open source software instead of proprietary software? Not at a...
by Prime
Wed Apr 05, 2017 12:09 am
Forum: hardware
Topic: MaxRAM - New Open Hardware BBC RAM/ROM Board
Replies: 67
Views: 1505

Re: New Open Hardware BBC RAM/ROM Board

Well I guess as you're choice of software is so superior to mine, I won't botheroffering to help again.

And yes I'm a little pissed.

Phill.
by Prime
Tue Apr 04, 2017 6:16 pm
Forum: hardware
Topic: MaxRAM - New Open Hardware BBC RAM/ROM Board
Replies: 67
Views: 1505

Re: New Open Hardware BBC RAM/ROM Board

I built a couple of these for myself a little while back pretty useful. Not writable in the beeb but I'm sure that could be added fairly easily. MegaFlashRom+SRAM - MK4.zip Cheers. Phill. Sorry I do not have Eagle, can you post a picture and PDF of the circuit diagram? I could later, but you can do...
by Prime
Tue Apr 04, 2017 2:59 pm
Forum: hardware
Topic: MaxRAM - New Open Hardware BBC RAM/ROM Board
Replies: 67
Views: 1505

Re: New Open Hardware BBC RAM/ROM Board

I built a couple of these for myself a little while back pretty useful.

Not writable in the beeb but I'm sure that could be added fairly easily.

MegaFlashRom+SRAM - MK4.zip
MegaFlashROM+SRAM
(55.12 KiB) Downloaded 29 times


Cheers.

Phill.
by Prime
Mon Apr 03, 2017 1:46 pm
Forum: off-topic
Topic: Shipping boxes.
Replies: 1
Views: 119

Shipping boxes.

Hi all, Anyone know where I can get some boxes suitable for shipping board out, I have some at the moment but they are a little too big : 220 x 160 x 50 (mm), ideally I'd like something that's about 25-30mm thick and around A5 or A6 sided as this makes it easier to just put a lable on the box and ju...
by Prime
Wed Mar 29, 2017 3:58 pm
Forum: hardware
Topic: Announcement : Update on hardware produced by me.
Replies: 5
Views: 321

Re: Announcement : Update on hardware produced by me.

Hi all, Just to say as several of you have either pm'd or updated this thread I have made note of who wants what and will be contacting you in due time to let you know when boards are built / ready to dispatch. One think I do need to point out is that some of these boards will need you to modify you...
by Prime
Tue Mar 28, 2017 12:56 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 12
Views: 410

Re: https certificates?

I'd hope that no one used a password on here that they used on anything important (as it's just a forum). HTTPS did cost money but I'll have a look at what you've suggested there, it looks interesting! Self signed certificates would work if web browsers didn't try and scare you into thinking that i...
by Prime
Tue Mar 28, 2017 8:58 am
Forum: other vintage computer hardware, software and games
Topic: Programming Flash roms in situ.
Replies: 1
Views: 85

Programming Flash roms in situ.

Hi all, The DragonMMC board currently uses a AT28C256 EEprom to store the 6809 code, this is good as I have code that allows it to be field upgradable as you can write to it almost like a RAM. The code to reprogram this is working pretty well and has been tested without problems. However the 28C256 ...
by Prime
Mon Mar 27, 2017 8:26 pm
Forum: wanted
Topic: M5 CGL / Sord any cartridge to test a system
Replies: 2
Views: 86

Re: M5 CGL / Sord any cartridge to test a system

Send Sirmorris a message I believe he may be able to help you out......

Cheers.

Phill.
by Prime
Mon Mar 27, 2017 9:57 am
Forum: hardware
Topic: Announcement : Update on hardware produced by me.
Replies: 5
Views: 321

Announcement : Update on hardware produced by me.

Hi all, I thought as I keep getting enquiries I'd better update people. First the "bad" news, It is with regret that I must announce that the mk 5.x Atom Colour board is going to be shelved indefinitely. I cannot get it to work sufficiently well for me to be satisfied with it or have any d...
by Prime
Mon Mar 27, 2017 9:45 am
Forum: other vintage computer hardware, software and games
Topic: IBM PC XT
Replies: 20
Views: 501

Re: IBM PC XT

I've been buying a bit more stuff for this PC and also doing a bit more work on it too. Cleaned out the PSU (was full of 30 odd years of dust). PSU Cleaned.jpg Installed a new fan (after drilling out the old rivets), really quiet now compared to what it was like :D New Fan Installed.jpg I Have a co...
by Prime
Sun Mar 26, 2017 5:43 pm
Forum: off-topic
Topic: LOLPRICE
Replies: 2559
Views: 146711

Re: LOLPRICE

The Atom is harder to find than the ZX80, 100,000 ZX80s were made, how many Atoms? According to STH, over 20,000 units went out of the factory in both kits and pre-assembled form. Article link: https://www.stairwaytohell.com/articles/AU-AcornHistory.html Even at 20,000 machines that's no where near...
by Prime
Mon Mar 20, 2017 9:10 am
Forum: off-topic
Topic: Problems with Verilog bit array.....
Replies: 2
Views: 123

Problems with Verilog bit array.....

Hi all, Posting this here too as I know some of you also use Verilog and may have some useful input, also since the 6809 bus is similar to the 6502 bus that helps too.... I'm making an addon for an old 6809 based computer, one of the components of this machine (Tandy CoCo) has an IC that is programm...
by Prime
Fri Mar 17, 2017 4:10 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG EAST MIDLANDS (Winter Warmer) 17-19 November 2017 (Leicestershire)
Replies: 28
Views: 573

Re: ABUG EAST MIDLANDS (Winter Warmer) 17-19 November 2017 (Leicestershire)

lazarusr wrote:
IanS wrote:How do you plan to enfore this rule?

Anyone who spends a whole day in one room only will have their Acorn kit confiscated for one hour and replaced with a ZX81. :lol: :lol: :lol:

I would imagine that for some of us that might not be a problem.......

Cheers.

Phill.
by Prime
Wed Mar 15, 2017 4:05 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG EAST MIDLANDS (Winter Warmer) 17-19 November 2017 (Leicestershire)
Replies: 28
Views: 573

Re: ABUG EAST MIDLANDS (Winter Warmer) 17-19 November 2017 (Leicestershire)

Would be silly to miss this one as it's just up the road from me, so put me down :)

Cheers.

Phill.
by Prime
Tue Mar 14, 2017 9:32 am
Forum: hardware
Topic: Master RAM board new version.
Replies: 92
Views: 5522

Re: Master RAM board new version.

Hi Phil, I tried to contact with you via FB, but with no success :( Maybe you still have MRB for sale? My Elk need it :) Hey Sebastian, I did see a couple of friend requests pop up but not had a chance to answer them, I did build a couple of MRBs at the weekend I just need to test them and make up ...
by Prime
Tue Mar 14, 2017 9:28 am
Forum: hardware
Topic: 6809 experiments
Replies: 9
Views: 402

Re: 6809 experiments

An Atom might be a good start to write your own mos. The Atom is a simple machine and it's also very well documented. In fact, back in the 80's some people were actualy replacing the 6502 by a 6809 but they never published their software. Please keep us informed about your projects. It also has a 6...
by Prime
Fri Mar 03, 2017 3:24 pm
Forum: general
Topic: Death-dapters - Why you really don't want them...
Replies: 42
Views: 1740

Re: Death-dapters - Why you really don't want them...

lazarusr wrote:To be fair, double insulated probably does mean safe. The real question is: does double insulated mean double insulated?

In that video it wasn't safe for the fish as he said they all died :(

Cheers.

Phill.
by Prime
Thu Feb 23, 2017 4:11 pm
Forum: upcoming and recent events & exhibitions
Topic: May 12th-14th 2017 Cambridge ABUG (FULL) & Acorn World event at CCfCH
Replies: 56
Views: 2384

Re: May 12th-14th 2017 Cambridge ABUG & Acorn World event at CCfCH

I'll also be turning up on Friday night, wouldn't want to miss piza or whatever :)

Cheers.

Phill.
by Prime
Thu Feb 23, 2017 9:28 am
Forum: upcoming and recent events & exhibitions
Topic: Proposal: ABUG London and International
Replies: 40
Views: 961

Re: Proposal: ABUG London and International

I think either Heathrow or Basingstoke would be doable for me coming from Coventry so happy with either. Attendence would of course depend on not being on holiday (end of June) or at another event :) Due mostly to not having mastered the art of being in two places at one time......Normal August and ...
by Prime
Thu Feb 16, 2017 3:39 pm
Forum: other vintage computer hardware, software and games
Topic: Soldering advice....
Replies: 7
Views: 281

Re: Soldering advice....

How about... https://www.recom-power.com/pdf/Innoline/R-78Exx-1.0.pdf ? Not sure if this helps, but here over on Sinclair ZX World here I posted some pictures of how I mounted a Recom regulator. On ZX Spectrums, they can be mounted upright as intended by the manufacturer. Other manufacturer types a...

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