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Hi all since I have been asked about these : Here's the Eagle design files for the following : 6502 clone board, Video board combination of the 40 and 80 column boards, switchable between the two. Backplane board. Floppy / Econet board, 8271 based, Econet is implemented by a Master / Arch Econet mod...

I think there may be a bug with 1.20 where it is not loading the symbols correctly.

Please standby for a fix.....

Cheers.

Phill.

jms2 wrote: ↑

Mon Jan 21, 2019 8:58 pm

What am I missing?

Can you show us the contents of your LABELS.TXT please?

Cheers.

Phill.

And home....

Thanks to Robert for organising the meetup in such a good venue (again), and thanks to all that came and made it an enjoyable and productive meetup.

Cheers.

Phill.

Right just setting out see you all in a couple of hours....

Phill.

Right (hopefully) everything is packed up and waiting to be loaded into car tomorrow.

Hoping to leave Coventry at around mid-day so hopefully be there between 2-3pm depending on traffic etc.

Cheers.

Phill.

oss003 wrote: ↑

Wed Jan 16, 2019 8:47 pm

Nice job Phill, looks great....
Did you also test colours in textmode and in colourset2?
?#B002=8

Yep I believe your Manic Miner screen uses them and displays OK but will check.

Cheers.

Phill.

Right I think I've got the colours working correctly now :
And Mono mode looks good too.....
Cheers.

Phill.

I use SIL pins and a stack of sockets... effective and not entirely ugly :lol: Exactly what I do for my boards using these : https://www.rapidonline.com/truconnect-20-way-turned-pin-sil-header-22-1704 Bonus is they are 20 pin so 2 of them and a 40 pin socket for the CPU / 6847 (on the Atom) etc. Ch...

PCB design is almost complete, and I will be looking to place an order for a prototype PCB in the very near future. One off costs are quite high, but come down considerably if I order in bulk. Might be worth considdering https://www.allpcb.com they are quite reasonable for runs of 5 boards, it woul...

was the Mk 5.1 board the only version with this Issue at the "Cowboy shoot out" game? Hi Wim, It was the only version it was reported on, I think you have one of the late 4.x series (which became the 5.x), so yours may have the problem :) I think your board is the one that has an LS chip on the out...

OK, I'll try that. I've been trying to follow the details of the v5.4 board to understand how it improves on previous versions, but I must admit the details eluded me! In a nutshell, is the main benefit improved ease of manufacture, or does it do other things such as give more faithful colours? I'm...

Phill, I know you were never able to reproduce the screen rolling instability problem with version 5.1, but is there reason to believe that the new version 5.4 might perform better in that regard? Well, I was able to reproduce the problem with "Cowboy shoot out", this board doesn't seem to have it....

Gotta say I'm impressed with all-pcb, ordered these Monday 7th Jan, arrived Friday 11th Jan, including the journey from China! Anyway here's the Mk 5.4 board seems to be working so far (this is the second one built), which Kees has kindly aggreed to test for me. P1000104.JPG I'm not currently using ...

The PSU probably does need recapping, they often have Rifas in like beeb PSUs, I seem to remember doing one for someone last time I was at camberly. I'll bring my box of RIFAs..... Can't remember if the IIe has it's chips socketed, but if so might be worth re-seating them. Though I suspect from the ...

Will also bring my Wellon programmer, will try to (remember to) pack my Stag eraser (can do about 7 at a time).

Anything else anyone wants me to bring?

Cheers.

Phill.

I'll hopefully have the boards by the meetup, I ordered 5 today from ALL-PCB. With any luck I should have at least one built :) I've also recieved some of the slightly bigger 74HCT1G66s from Mouser these : https://www.mouser.co.uk/ProductDetail/595-SN74LVC1G66DBVR Whilst they are still small they at...

Right, next stage is complete, prototyping new board, on self etched board :- P1000087.JPG Seems to be working fine now, though it's taken a few days for me to track down a bug that was caused by A0 being connected properly to the 6847 but not (reliably) to the Atom Bus :( leading to odd results whe...

I have one of those that I believe Kees gave me at one of the Acorn meetups in the Las in Manchester, so was a few years ago :) Never had it working tho, will have to try it at some point. It should be possible to have the AtoMMC and the Big Benny on the same PL8 cable, AtoMMC now only uses 4 I/O lo...

I've had problems sometimes building things in my Dropbox folder, basically dropbox is doing things in the background that fubars the foreground process.

Cheers.

Phill.

If you have braces/language syntax for that and indentation as a second way of expressing the same thing you can then check they match! Which is presisely why I tend to use : if (blah == 1) { DoSomething(); DoSomethingElse(); } Rather than : if (blah == 1) { DoSomething(); DoSomethingElse(); } Beca...

I love the dead-bug mounting of the 74LVC1G66 - it really is rather a pig to solder. Not really a dead bug mounting, I made some little adapter boards, though I did use the wrong footprint for the damn chip....gonna order some more of the bigger footprint ones to try, as Mouser carry them. Are you ...

So I was initially just working on a section of breadboard, but decided that wasn't a very long term solution....... So Now I have this on a little pice of stripboard plugged into the MK5.1 where the Colour VR would normally be, having first removed the Colour & Mono pots & resistors. Things to note...

Aha! Found the problem, I was feeding the Y signal into the pad that the emitter for TR2 would be connected to, however I had failed to notice / disconnect R6 a 470R also connected to that pin. So I guess that was pulling Y down, and stopping the other circuitry work :) Mind I've also now got a 74LV...

Phill, Question is the clamp signal meant to be active (high, therefore switching the 74LVC1G66 / 4016 on), during the back porch? Yes, the clamp signal should be active high during the back porch, and active for as long as possible. (i.e. it should go high just after that start of the back porch, ...

Hi all,

I've just updated the executable to be 32bit, and made the project to default to windows / i386, as it doesn't really need 64 bit

I also added the ability to use -a to specify an Atom / System disk, so that you don't have to manually specify the qualifier all the time.

Cheers.

Phill.

I can't get this to work :( Replicating the Input to the Y comparitor C1, R1, R8, R9, RV1, C7. Also replicated the clamp circuit R6, R7, C4, I don't have any of the LVC gates but I did have a 4016, which according to it's datasheet is good down to 3V so I used that. Anyway I can't get any meaningful...

Right I've patched the mk5.1 board to take input from PL4 pin 9, and changed the CPLD so it only takes input from one comparitor. I've also changed the resistors so that the adjust produces sensible output and I get text fine :) I've also updated the CPLD code to generate the back portch clamp signa...

OK DFSdisk updated now to delete files.

I've also included the exe in the github archive so you don't have to self compile (on windows at least).

Cheers.

Phill.

Hi guys, does anyone know if there's a command line tool to add/delete files to an Atom diskimage? Atomdisk is 40 tracks, 10 sectors/track, 256 bytes/sector. For What platform? Windows / Linux / Mac / RiscOS / Atom ???? If you can compile freepascal, you could try my DFSDisk : Source available here...