Search found 56 matches

by mark71
Sun Nov 22, 2020 7:25 pm
Forum: for sale / freebies
Topic: For sale: Acorn Electron WiFi cartridges
Replies: 46
Views: 2732

Re: For sale: Acorn Electron WiFi cartridges

[quote=mr-macrisc post_id=297361 time=1606062597 user_id=11310] Do we know if anyone on here can print a case for these boards? Happy to pay as have no way to make a case myself. Thanks [/quote] Working on it, started on the back part, a few gotchas on the way so far but enjoying the design, using F...
by mark71
Mon Oct 19, 2020 3:59 pm
Forum: for sale / freebies
Topic: Yarrb2 boards
Replies: 3
Views: 293

Re: Yarrb2 boards

Hi Roland

Put me down for one.

Thanks Mark
by mark71
Tue Oct 06, 2020 9:04 pm
Forum: 32-bit acorn hardware
Topic: Getting an Acorn A3010 online
Replies: 7
Views: 503

Re: Getting an Acorn A3010 online

From my recent experiments in getting 32bit Acorn kit online is the level of expectation in what you are trying achieve. I got my A5000 online using a Wifi modem, from Simultant was the company, found it on ebay, pretends to be a modem as such and uses a Hayes command set, so basically you can telne...
by mark71
Mon Sep 21, 2020 7:24 am
Forum: 32-bit acorn hardware
Topic: A5000 using Wifi Dongle
Replies: 3
Views: 349

Re: A5000 using Wifi Dongle

thecellartroll wrote:
Sat Sep 19, 2020 8:51 pm
Is it serial to WiFi?
It is a Serial to WiFi, from Simultant works ok.
by mark71
Thu Sep 17, 2020 11:58 am
Forum: 32-bit acorn hardware
Topic: A5000 using Wifi Dongle
Replies: 3
Views: 349

A5000 using Wifi Dongle

Hi All Just something as an experiment on getting the A5000 on wifi, of sorts, Bought a Wifi Dongle on Ebay, connected it up and it worked!, see picture below. Connected to a few BBS's, using Hearsay2, one thing could only get the max baud rate to 19200, can the A5000 do higher 115200?. Next steps s...
by mark71
Thu Sep 10, 2020 10:08 pm
Forum: for sale / freebies
Topic: For sale: Acorn Electron WiFi cartridges
Replies: 46
Views: 2732

Re: For sale: Acorn Electron WiFi cartridges

Hi Roland

I would like one as well, saw the talk, if you have any left.

Thanks

Mark
by mark71
Thu Sep 10, 2020 8:47 pm
Forum: 32-bit acorn hardware
Topic: RiscPC/Archimedes Monitor recommendations?
Replies: 8
Views: 863

Re: RiscPC/Archimedes Monitor recommendations?

Holding a numeric keypad key during power-up changes the monitor type to that value - a quick and easy way to get an Arc to deal with a monitor when you can't see what's going on. I expect you'll want monitor type 0, 3 or 4. https://www.riscosopen.org/wiki/documentation/show/Monitor%20Types Hi Ian ...
by mark71
Mon Sep 07, 2020 6:59 am
Forum: 32-bit acorn hardware
Topic: RiscPC/Archimedes Monitor recommendations?
Replies: 8
Views: 863

Re: RiscPC/Archimedes Monitor recommendations?

Thanks for the tip, bought a BL702A from Amazon for 94.99, works a treat on the A420/1 and the RiscPC, 1280x1024 for the the latter really nice picture too. Mark Brilliant - thanks for reporting back! Great little monitors those. Hi Daniel A quick question about this monitor, a good monitor, works ...
by mark71
Fri Sep 04, 2020 6:41 am
Forum: for sale / freebies
Topic: For sale: RGBtoHDMI boards
Replies: 104
Views: 5263

Re: For sale: RGBtoHDMI boards

Hi Ian

Can you put me down for:-

2 x RGBtoHDMI kit
1 x Analog board kit

Thanks

Mark
by mark71
Sun Aug 23, 2020 10:14 pm
Forum: 8-bit acorn hardware
Topic: Acorn Electron Project Expansions Sound Cartridge
Replies: 7
Views: 415

Re: Acorn Electron Project Expansions Sound Cartridge

I can buzz out the missing links if people are interested, I would like to learn KiCad but the day job limits my time. The Sound Expansion v3 cartridge maps the ROM to bank 13, using the OE2 line. Could you let me know which bank(s) the v2 ROM is mapped to? Same as V3 13, screen shot using the plus...
by mark71
Tue Aug 18, 2020 8:39 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

Re: My first Atom....

The best start is indeed minimum configuration. Then take out the IC's one by one and clean the IC legs and socket before putting it back. Next step is to check if the +5V is available on the IC's and eg pin 1 and 31 op PL6/7. Also switching the 2114's will help if one is broken. Is your Atom still...
by mark71
Tue Aug 18, 2020 8:37 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

Re: My first Atom....

Maybe you can get some inspiration from another topic with similar problems: https://stardot.org.uk/forums/viewtopic.php?f=44&t=18020&start=150 Especially focus on the power supply (do all the IC's get their 5V (+/- 5%) and the behaviour of the CPU. What equipment do you have for measuring signals?...
by mark71
Tue Aug 18, 2020 8:34 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

Re: My first Atom....

If you've the patience (?) perhaps replace all the white sockets! They seem to be of very poor quality! Dave H. Hi Dave The machine looks in a very clean original situation, no wires on the other side, i have a feeling that the CPU was from another machine but dated from 1980 i think, need to check...
by mark71
Mon Aug 17, 2020 9:33 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

Re: My first Atom....

Hi All Looking for some advice on bringing my Atom back to life, i had another go last night, took the Atom back to minimum spec, from looking at the forums here. Still now joy same pattern on screen, one thing i did notice if i touched the 8255 IC i would get some noise as if there was a bad connec...
by mark71
Mon Aug 17, 2020 9:19 pm
Forum: 8-bit acorn hardware
Topic: Acorn Electron Project Expansions Sound Cartridge
Replies: 7
Views: 415

Acorn Electron Project Expansions Sound Cartridge

Hi All I was asked today for some info on the Project Expansions Sound Cartridge for the Acorn Electron, as i have one from when i bought it new in the late 80's, for future posterity and for those who want to replicate this. Here are some pictures and information that i have. Attached are some imag...
by mark71
Sun Aug 09, 2020 10:30 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

Re: My first Atom....

marcusjambler wrote:
Sun Aug 09, 2020 10:23 pm
Press the Break key
I did, nothing happened, other than some noise sometimes, CTRL G tried that nothing, will investigate keyboard contacts.
by mark71
Sun Aug 09, 2020 9:42 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

Re: My first Atom....

Well, fitted the two links and put a new power socket in, powered the old girl up and no beep, but got a randon assortment of characters on the screen, see below, any ideas to look for?. Seems to be the exact randomness everytime it re-boots... Next steps pop out the IC's and de-ox the sockets and t...
by mark71
Sun Aug 09, 2020 9:34 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

Re: My first Atom....

Hi nice Atom... =D> Yes I do have a Seikosha GP-80M printer... :D But sadly I never did manage to get suitable/fitting paper for it... :( Greetings, Wim... :-) I've got one of those that I received as part of a job lot. It uses eight-inch fan-fold paper, as opposed to the more common ten-inch varie...
by mark71
Tue Aug 04, 2020 3:57 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

Re: My first Atom....

Recomendations for power supplys?, none came with it so look to fit LK6/7 and use a 5V Regulated one. Congrats on your new Atom! I couldn't find a power supply with the right connector for my Atom - so I replaced the connector and used one of these: https://www.ebay.co.uk/itm/5V-4A-AC-DC-Switching-...
by mark71
Mon Aug 03, 2020 9:37 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1376

My first Atom....

Hi All Just acquired an Atom to add to the other Acorn kit and wonder what you could tell me about it and what to check before seeing if it works. Case looks in good nick, needs a good wash not too much yellowing, came in the orginal Poly, with the manuals and some other pamplets anyone have a Acorn...
by mark71
Fri Jul 10, 2020 7:14 am
Forum: 32-bit acorn hardware
Topic: RISCPC Power Supply Refurbish - 4 Kits Available
Replies: 54
Views: 2633

Re: RISCPC Power Supply Refurbish

I'll also provide kits of parts for anyone wanting to refurbish their own supply. Reply here if you're interested and I'll order parts accordingly. Hi Dave Sign me up for 4 kits. This brings up an interesting thing, whilst having Youtube videos of retro computers playing whilst working.... the like...
by mark71
Thu Jul 09, 2020 12:25 pm
Forum: 8-bit acorn hardware
Topic: Acorn Electron problem flashing picture and lines
Replies: 26
Views: 1132

Re: Acorm Electron problem flashing picture and lines

traindriver69 wrote:
Thu Jul 09, 2020 10:18 am
Hi
problem is I get the same through the video connection with a phono lead.
Have you tried a RGB to Scart lead?
by mark71
Thu Jun 18, 2020 7:45 pm
Forum: 32-bit acorn hardware
Topic: Replacing A5000 CMOS chip
Replies: 6
Views: 710

Re: Replacing A5000 CMOS chip

Hi All

Working on a veroboard RTC CMOS replacement, based off of the website on retro-kit.co.uk, I have a question as want to replace the diode from the +5v D15 on the Circuit diagrams any recommendations for a non SMC equivalent?, IN4148?

Mark
by mark71
Thu Jun 04, 2020 9:32 pm
Forum: past all-day virtual ABugs
Topic: All-day 'Virtual' Acorn session #4, Saturday 6th June 2020, 9am - 10pm - NOW FULL
Replies: 119
Views: 7889

Re: All-day 'Virtual' Acorn session #4, Saturday 6th June 2020, 9am - 10pm

Hi All

If there are any spaces left, put me down for all of the day, I’ll be in and out depending on my two children.

Mark
by mark71
Tue Jun 02, 2020 5:47 am
Forum: 32-bit acorn hardware
Topic: RiscPC/Archimedes Monitor recommendations?
Replies: 8
Views: 863

Re: RiscPC/Archimedes Monitor recommendations?

danielj wrote:
Sun May 24, 2020 10:22 am
BenQ BL912 or BL702 both have VGA connectors and also can display the 15kHz modes without needing an adaptor.

d.

Thanks for the tip, bought a BL702A from Amazon for 94.99, works a treat on the A420/1 and the RiscPC, 1280x1024 for the the latter really nice picture too.

Mark
by mark71
Sun May 24, 2020 9:47 pm
Forum: 8-bit acorn hardware
Topic: Dead Elk, any ideas?.
Replies: 44
Views: 2235

Re: Dead Elk, any ideas?.

:^o Hi I get the same screen as the one that you've posted, but it's only when I put my Slogger Pegasus into my Plus 1. I was wondering what issue pcb you have in yours, an Issue A by any chance? All Issue 4 PCB. I did try a good working ULA in it and no joy, thinking it could be the 6502 in both c...
by mark71
Sun May 24, 2020 10:07 am
Forum: 8-bit acorn hardware
Topic: Dead Elk, any ideas?.
Replies: 44
Views: 2235

Re: Dead Elk, any ideas?.

Hi All On further investigation with a different monitor/tv am getting the above pink colour distortion, also when switching off am now hearing the cassette motor relay click, so guessing that as others concluded the ULA is dead. IMG_6010.jpg Also with another Elk just aquired via ebay a similar thi...
by mark71
Sun May 24, 2020 9:55 am
Forum: 32-bit acorn hardware
Topic: RiscPC/Archimedes Monitor recommendations?
Replies: 8
Views: 863

RiscPC/Archimedes Monitor recommendations?

Hi All A quick question but most likely a complex answer, what are your recommendations for sourcing a LCD replacement montiors that will work with RiscPC's?, having a AFK18 monitor that still works but am looking for something a bit more modern and not so bulky to use on my venerable 32bit Acorn ki...
by mark71
Mon May 04, 2020 9:19 pm
Forum: 8-bit acorn hardware
Topic: Dead Elk, any ideas?.
Replies: 44
Views: 2235

Re: Dead Elk, any ideas?.

did it get struck with lighting?? or did you pull anything out the Plus1 two cart slots while it was using them, or drop it off the side of a table??? had lots of elks in different states / faults, always got some screen garbage , then fixed them. have you tried both RGB & AV out to TV :? Well thin...

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