Search found 2360 matches

by Prime
Sat Jan 13, 2018 3:43 pm
Forum: hardware
Topic: Floppy drive ready line.....
Replies: 2
Views: 109

Floppy drive ready line.....

Hi all, We know that the 8271 needs a ready signal from the floppy drive, on the Acorn machines this is faked up with some counters and latches. However on my System clone I am trying to use a drive that actually supplies the ready signal (it is a 3.5", but has been modified to supply ready). T...
by Prime
Sat Jan 13, 2018 3:35 pm
Forum: upcoming and recent events & exhibitions
Topic: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*
Replies: 71
Views: 2888

Re: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*

BeebMaster wrote:
Prime wrote:Well planning on bringing :

Beeb master

Hey! I'm bringing me!

LOL :)

And seeing as you live in Manchester anyway......

Cheers.

Phill.
by Prime
Fri Jan 12, 2018 3:27 pm
Forum: upcoming and recent events & exhibitions
Topic: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*
Replies: 71
Views: 2888

Re: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*

Well planning on bringing : Normal solder / desolder stuff. Shuttle PC with SCSI card and tape drive. System Clone, with switchable video card and hopefully debugged floppy controller. Beeb master + data centre as it's handy for writing disks with. Prolly a Dragon to show off multicart to Arcadian. ...
by Prime
Mon Jan 08, 2018 10:56 pm
Forum: general
Topic: QIC tape and drive (from ABUG North booking info topic)
Replies: 17
Views: 150

Re: QIC tape and drive (from ABUG North booking info topic)

Right update, After digging out drives and tapes I eventually found a combination of SCSI card and shuttle that works with the 60MB drive, and was able to read some tapes I had. So then I swapped 150MB drive into system inserted tape and tried to read it, and it ground to a halt rather rapidly, rubb...
by Prime
Sun Jan 07, 2018 5:08 pm
Forum: general
Topic: QIC tape and drive (from ABUG North booking info topic)
Replies: 17
Views: 150

Re: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*

QIC-150 drives should be able to _read_ DC600A tapes; I'm pretty sure I did that in the early 90s. Indeed, turns out the only ones I can find are DC300XLP but the 60mb drive I have can write them, according to the manual for the Archive 150mb drive it can read them too so shouldbe able to test. Esp...
by Prime
Sun Jan 07, 2018 3:01 am
Forum: general
Topic: QIC tape and drive (from ABUG North booking info topic)
Replies: 17
Views: 150

Re: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*

I *may* have a qic-150 drive, I certainly have one of the 60mb ones of the same physical cartridge size. If I can find it and it is SCSI I could bring it to the meetup. Now does anyone know where I could get a cheapish pcie scsi card, as all the ones I have are pci or isa :) Update: I do have an Arc...
by Prime
Fri Dec 22, 2017 12:17 am
Forum: hardware
Topic: Sugestion for ICE T65/Z80/6809 firmware.
Replies: 1
Views: 192

Sugestion for ICE T65/Z80/6809 firmware.

Hi, Would it be possible to implement (or is it implemented and I've just not spotted it) a quiet form of the logging when tracing that doesn't print the big string of numbers on the right hand side, just the exec address and instruction. This would make doing long debug traces much quicker as it wo...
by Prime
Fri Dec 22, 2017 12:12 am
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 619
Views: 34098

Re: ICE T65/Z80/6809

bprosman wrote:Got my 2nd EEPizza board in and it came with a straight single header row like the 1st one.

For the JTAG? Yeah mine arrived the other day and is like that too. May welldesolder and replace with right angle ones.

Cheers.

Phill.
by Prime
Mon Dec 18, 2017 9:27 am
Forum: off-topic
Topic: crystal oscilator modules......
Replies: 4
Views: 171

Re: crystal oscilator modules......

And it's working now, worked out the problem was the CPLD not capturing writes properly and the 68008 not waiting long enough for the SPI transaction to complete before reading back the result :(

All works now and with the 50MHz osillator is much faster than the bit bangged setup :)

Cheers.

Phill.
by Prime
Fri Dec 15, 2017 9:58 am
Forum: off-topic
Topic: crystal oscilator modules......
Replies: 4
Views: 171

crystal oscilator modules......

Hi all, I've recently re-visited a project I had been working on a couple of years ago, which was a clone of the Trump Card floppy / RAM interface for the Sinclair QL. Also on my board I had implemented a clone / re-spin of the QL-SD interface. The Floppy / ram part is working as it should however t...
by Prime
Thu Dec 14, 2017 7:46 pm
Forum: hardware
Topic: ICE T Spartan 6 and adapter board.
Replies: 3
Views: 179

ICE T Spartan 6 and adapter board.

Hi all, Just a couple of days ago received my Spartan 6 board and have just gone to mate it with Jason's adapter board and noticed that the silkscreen on Jasons board doesn't match (it's the mirror image of) the layout of my spartan board. So before plugging it in and killing the FPGA (or worse the ...
by Prime
Fri Dec 08, 2017 2:13 pm
Forum: acorn atom
Topic: Is there still any interest for Atom2k15 boards
Replies: 17
Views: 1226

Re: Is there still any interest for Atom2k15 boards

That could solve the Godil problem. But where to get the XC9536XL and XC9572XL CPLD's? The 44pin PLCC are not available any more except from Ebay ... but are these reliable? You could of course re-engineer (I'm assuming you still have the design files which IIRC where for kicad) the boards for the ...
by Prime
Thu Dec 07, 2017 9:33 am
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 619
Views: 34098

Re: ICE T65/Z80/6809

[Oops, I see now I missed an existing reply!] And then, hacking off the 2x50 sockets and then soldering the 40pin header is another option. Desoldering them intact could be tricky, but attacking them with sidecutters and then removing the 100 pins one by one should be easier. It would of course be ...
by Prime
Thu Dec 07, 2017 7:29 am
Forum: acorn atom
Topic: ICE T65/Z80/6809
Replies: 619
Views: 34098

Re: ICE T65/Z80/6809

I'd initially thought about making an adapter board bu eventually opted to remove the female headers and replace with top mounted male ones + dil40 on bottom. Though it was a reasonable amount of work :( and took ages to clear the solder out of the holes to fit the new top mounted pins. Cheers. Phill.
by Prime
Thu Dec 07, 2017 12:21 am
Forum: hardware
Topic: Unusual mask ROM in Master 128
Replies: 8
Views: 294

Re: Unusual mask ROM in Master 128

It says "MOS 3.20 with incorrect CS". I'm curious what the 'incorrect CS' might refer to. EDIT: Thinking about it, I'm wondering if CS is chip select. Yes, it's Chip Select. It incorrectly had a CS line (active high) instead of a ~CS line (active low), so came on a mini-PCB with an invert...
by Prime
Tue Dec 05, 2017 12:30 pm
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 1508

Re: Which soldering iron?

I *THINK* I'm beginning to get it, though I do think that the T18-C3 is a little too wide for my liking, I'm going to try ordering a C2 and C1, as they are only a few quid. I do think I'm more suited to using the flux pen however, I was finding the liquid stuff irritating and made me cough loads, al...
by Prime
Fri Dec 01, 2017 3:27 pm
Forum: general
Topic: Is it just me?
Replies: 7
Views: 230

Is it just me?

Or does this look a little like the A4 laptop?

https://www.ebay.co.uk/itm/walkstation- ... 2771697734

cheers.

Phill.
by Prime
Fri Dec 01, 2017 9:10 am
Forum: acorn atom
Topic: I've got an Acorn Atom... Woot Woot :) (changed title (again) :)
Replies: 23
Views: 836

Re: I've got an Acorn Atom... Woot Woot :) (changed title (again) :)

No that doesn't work because the AtoMMC rom and DISATOM are both #Axxx versions. You could install an #Exxx AtoMMC rom instead of a #Axxx version and place the AtoMMC rom on top. But if he did that wouldn't it preclude the use of SDDOS which IIRC is an $E000 ROM? I do have some RAMROM boards left, ...
by Prime
Thu Nov 30, 2017 9:25 pm
Forum: upcoming and recent events & exhibitions
Topic: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*
Replies: 71
Views: 2888

Re: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*

No need to drive, it's walk/bus-able. (no, it's not one we went to from replay) About a 20 minute walk: https://www.google.co.uk/maps/dir/The+Castlefield+Hotel,+Liverpool+Road,+Manchester/Zouk+Tea+Bar+%26+Grill,+5,+The+Quadrangle,+Chester+Street,+Manchester+M1+5QS/ Ahhh not far from the Lass, did w...
by Prime
Thu Nov 30, 2017 4:15 pm
Forum: upcoming and recent events & exhibitions
Topic: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*
Replies: 71
Views: 2888

Re: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*

If we're going for a curry in Manchester, Zouk is really the only sane choice... (friends from the Indian subcontinent suggest it is even better than some of the best restaurants there...) :) Is that the place we went to from one of the Replay events I seem to remember parking being 'fun' Cheers. P...
by Prime
Thu Nov 30, 2017 11:00 am
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 1508

Re: Which soldering iron?

Too much solder perhaps? You need only the tiiiiiiiinyiest touch for a tqfp. A bit more for a sodip. And flux. Lots of it. The more toxic the better :lol: Moar colons. Probably too much solder, I did flux it both the pads and on top of the pins with a flux pen I'll try picking up some of the flux y...
by Prime
Thu Nov 30, 2017 10:30 am
Forum: upcoming and recent events & exhibitions
Topic: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*
Replies: 71
Views: 2888

Re: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*

Just a warning to others..... Just trying to book a hotel room on the website, and am getting a warning that the page that's asking for my details is NOT secure. It's http:// **NOT** https:// so I'm not going to enter credit card details / address on this page. will drop the hotel an email and ask t...
by Prime
Thu Nov 30, 2017 10:20 am
Forum: upcoming and recent events & exhibitions
Topic: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*
Replies: 71
Views: 2888

Re: ABug NORTH User Group meeting | 19-21 JAN 2018 | MANCHESTER *BOOKING INFO*

Hi Dave,

Paid, will be bringing Kit (hopefully I'll have the prototype Apple IISDe boards by then), but promise to bring some Acorn stuff this time....though I did have my Atom & Master at Leicester :) Will be there all weekend.

Cheers.

Phill.
by Prime
Thu Nov 30, 2017 7:35 am
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 1508

Re: Which soldering iron?

So, I just tried drag soldering some smallymouse TQFPs with my hakko and the C2 tip, something that I've not actually done in anger before - it worked like it does in the videos, I was mightily impressed. Not my experience alas I got myself a C3 bit as Charlie suggested but all I succeded in doing ...
by Prime
Thu Nov 30, 2017 7:30 am
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 1508

Re: Which soldering iron?

crj wrote:
jonb wrote:the Hakko's got a funky blue & yellow colour scheme that makes it look rather toy-like)

Also available in silver!


I actually like the blue and yellow, I think the silver one looks a little bland to be honest.

Cheers.

Phill.
by Prime
Wed Nov 29, 2017 1:09 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD
Replies: 17
Views: 725

Re: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD

Can you tentatively put me down for friday to sunday. However as this was the same weekend as the Dragon meetup last year, and I know they are planning another I will confirm once I know if / when that meetup is. I will of course suggest when they plan dates not to choose this weekend. Cheers. Phill.
by Prime
Tue Nov 28, 2017 4:45 pm
Forum: acorn atom
Topic: Acorn ATOM - PAL to NTSC
Replies: 6
Views: 219

Re: Acorn ATOM - PAL to NTSC

Yep 6847 is natively NTSC, so you should be good to go. Most of the computers that used it and output colour that where sold in PAL reigions hat to use various hacks to convert the signal, such as cutting the clock to the 6847 and using external logic to insert extra blank lines. The Atom just requi...
by Prime
Sun Nov 26, 2017 4:26 pm
Forum: for sale / freebies
Topic: New release: Retro Software's WHITE LIGHT by Sarah Walker for the BBC B/B+/Master & Master Compact
Replies: 23
Views: 1084

Re: New release: Retro Software's WHITE LIGHT by Sarah Walker for the BBC B/B+/Master & Master Compact

Arcadian wrote:Anyone else after a discounted White Light package before I start listing the rest on ebay later today?

I take it our convo on facebook counts as reserving a copy....

Cheers.

Phill.
by Prime
Sat Nov 25, 2017 8:47 am
Forum: upcoming and recent events & exhibitions
Topic: Gauging Interest: ABug Manchester Friday 19th - Sunday 21st January 2018
Replies: 48
Views: 1711

Re: ABug Manchester Friday 19th - Sunday 21st January 2018

Dave as I'm sure will happen did you ask them about using soldering irons etc?

Cheers.

Phill.
by Prime
Thu Nov 23, 2017 3:27 pm
Forum: off-topic
Topic: Which soldering iron?
Replies: 66
Views: 1508

Re: Which soldering iron?

Indeed I do. Just looking at the material data sheet for that, it's rosin free and looks unlikely to be utterly awful for you ;) Yep if I was reading it right it was 75%-85% Iso-propanol anyway....I have a 200ml bottle of that on my bench in any case. Basicly, don't drink it, don't bath your eyes i...

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