Search found 7393 matches

by 1024MAK
Fri Jun 22, 2018 9:47 pm
Forum: off-topic
Topic: Using BBC BASIC to teach programming concepts in 2017
Replies: 31
Views: 1256

Re: Using BBC BASIC to teach programming concepts in 2017

So although there are many times good points in this thread, I have a few thoughts to add. Everything in a computer can be broken down to simple logical steps. Humans don't normally realise it, but our own decision making process is also a series of small steps. It's just that like everything else w...
by 1024MAK
Fri Jun 22, 2018 6:51 pm
Forum: hardware
Topic: BBC Master 6522 VIA
Replies: 4
Views: 106

Re: BBC Master 6522 VIA

See also this thread Testing the Beebs User Port :wink:

Mark
by 1024MAK
Fri Jun 22, 2018 1:27 pm
Forum: hardware
Topic: BBC Master 6522 VIA
Replies: 4
Views: 106

Re: BBC Master 6522 VIA

Use a turned pin socket :wink:

Mark
by 1024MAK
Fri Jun 22, 2018 12:22 pm
Forum: hardware
Topic: A5000 repair and the origins of ctrl-g
Replies: 24
Views: 1560

Re: A5000 repair and the origins of ctrl-g

Thanks =D>

Mark
by 1024MAK
Fri Jun 22, 2018 12:07 pm
Forum: hardware
Topic: Newbie PSU recap questions
Replies: 9
Views: 160

Re: Newbie PSU recap questions

I presume you mean the coloured "paint" that has been applied over the top of the machine screw and on the sides of it. I normally use a thin flat bladed screwdriver to chip it away. Then once most of it is off, it's normally possible to get a Philips (size PH2) bit / screwdriver ( not a pozi drive ...
by 1024MAK
Thu Jun 21, 2018 5:02 pm
Forum: general
Topic: Today I received.....
Replies: 4658
Views: 312717

Re: Today I received.....

Water is a solvent. IPA is a solvent. Different "dirt" dissolves in different solvents... See this Wikipedia article.
So probably you need both! Start with the distilled water and unscented ordinary soap, wash with distilled water, then after dry, clean with IPA :wink:

Mark
by 1024MAK
Thu Jun 21, 2018 4:48 pm
Forum: hardware
Topic: Soldering and Hotair station options
Replies: 38
Views: 1570

Re: Soldering and Hotair station options

I prefer chisel tips. On my soldering irons, I use a small one for use on SMD and small through hole pads (1mm). A medium size for general work (2.3mm 3mm), and a 4mm or 5mm where there is a lot of copper or metal that needs heating up. The larger tip is good for soldering/desoldering things like th...
by 1024MAK
Thu Jun 21, 2018 12:29 pm
Forum: hardware
Topic: Acorn Master and Electron cartridge breakout
Replies: 44
Views: 1119

Re: Acorn Master and Electron cartridge breakout

Elminster wrote:
Thu Jun 21, 2018 11:09 am
Shame was looking forward to the jumping electrons
Cue me banging the table while watching an Elk jump along it :lol:

Mark
by 1024MAK
Thu Jun 21, 2018 11:02 am
Forum: hardware
Topic: Acorn Master and Electron cartridge breakout
Replies: 44
Views: 1119

Re: Acorn Master and Electron cartridge breakout

Mine has arrived - has been built and is now waiting for connectors from RS . . . Cable will have to be in two pieces, but not an issue! Do you have extra excited protons and electrons (not Acorn) that are going to jump between the two bits of cable? I think he means that he is going to use two bit...
by 1024MAK
Wed Jun 20, 2018 9:23 pm
Forum: general
Topic: Today I received.....
Replies: 4658
Views: 312717

Re: Today I received.....

Oh yeah, those STFM mouse / joystick connectors under the keyboard. What a poor design. From what I can see they used to be where the disc drive ended up being put when they started fitting them internally. Shame they didn’t put a but more effort into finding a better home for them. The original At...
by 1024MAK
Wed Jun 20, 2018 5:14 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4252

Re: https certificates?

Yep, nobody on an iOS device would be able to see the flash versions, even if the https thing was resolved. Um, that's not true. I actually composed that post on an Apple iPad mini2 running Safari on iOS 10. Only the second embedded video does not work (expected as it's link is http not https). Scr...
by 1024MAK
Wed Jun 20, 2018 2:39 pm
Forum: general
Topic: Today I received.....
Replies: 4658
Views: 312717

Re: Today I received.....

An Atari 520STFM! Also the mouse, leads and some games. Is there anything I need to check before switching this on? No sources of magic smoke etc.? Magic smoke, not normally, no. Typical faults are:- Faulty PSU on/off switch, non-functional or crackles when operated (either clean the contacts or re...
by 1024MAK
Wed Jun 20, 2018 2:26 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4252

Re: https certificates? - ‪Embedding YouTube videos‬

So there is no form that works for everyone :(

Mark
by 1024MAK
Wed Jun 20, 2018 1:36 am
Forum: hardware
Topic: Newbie PSU recap questions
Replies: 9
Views: 160

Re: Newbie PSU recap questions

For use on retro / old electronics, or for building your own projects that are not for commercial sale, use 0.7mm /22 swg 60/40 tin/lead solder with cored rosin-activated flux. If you are in the U.K. this solder from Rapid is good stuff. Multicore is a brand name that is also trusted. Tip temperatur...
by 1024MAK
Wed Jun 20, 2018 1:14 am
Forum: stardot.org.uk
Topic: Post Edits
Replies: 33
Views: 770

Re: Post Edits

This is where the improved draft facility comes in helpful. As now it is a lot easier to save your draft post. Then go do something else. Then come back and proof read it with a clearer (hopefully) mind. Then post it. Still not going to get every typo etc. But at least it's an additional tool to hel...
by 1024MAK
Tue Jun 19, 2018 9:27 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4252

Re: https certificates? - ‪Embedding YouTube videos‬

‪Embedding YouTube videos‬ Yeah, I noticed a problem with you tube videos. Was on my list of things to investigate further, but had not got around to it... Now (after update) this works: https://www.youtube.com/watch?v=6HLX2weZfkA [flash=425,344]https://www.youtube.com/watch?v=6HLX2weZfkA[/flash] W...
by 1024MAK
Tue Jun 19, 2018 3:23 am
Forum: hardware
Topic: Acorn factory friday special B+
Replies: 16
Views: 444

Re: Acorn factory friday special B+

When Amstrad moved all manufacturing for the Spectrum to the Far East with Orion (who did the CPC, PCW and would be doing the soon to be launched PC's), Sugar threw the Timex factory the bone of assembling his DMP2000 printers. By the way, do you know who Amstrad used to assemble the U.K. made vers...
by 1024MAK
Mon Jun 18, 2018 10:14 pm
Forum: general
Topic: Today I received.....
Replies: 4658
Views: 312717

Re: Today I received.....

I presume the keyboard fits okay when EPROMs are installed all along the bottom row?

If so, nice design :D

And a nice find =D>

Mark
by 1024MAK
Mon Jun 18, 2018 10:06 pm
Forum: stardot.org.uk
Topic: Post Edits
Replies: 33
Views: 770

Re: Post Edits

Just so you are all aware, only moderators and administrators get the box where a reason can be entered when editing a post. So my recommendation is for members to add a line similar to this at the bottom of their post: Edited due to <reason> You can of course expand on this if you wish. However, if...
by 1024MAK
Mon Jun 18, 2018 10:02 pm
Forum: stardot.org.uk
Topic: Post editing
Replies: 59
Views: 696

Re: Post editing

OK - you can choose a theme, or style, in the UCP that only shows you the edit line when someone's entered a reason for their edit: new-board-style.png Just so you are all aware, only moderators and administrators get the box where a reason can be entered when editing a post. So my recommendation i...
by 1024MAK
Mon Jun 18, 2018 5:13 pm
Forum: stardot.org.uk
Topic: Post Edits
Replies: 33
Views: 770

Re: Post Edits

This forum isn't overrun with trolls The moderator and admin team do their best to keep the forums neat and tidy, so that when the occasional bit of trouble breaks out, it is cleaned up quickly. We are of course helped by members reporting any misbehaviour. So thank you to those members who have ta...
by 1024MAK
Mon Jun 18, 2018 4:54 pm
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 39
Views: 522

Re: (Yet another) Memory Question

Don't think so...

Mark
by 1024MAK
Mon Jun 18, 2018 11:44 am
Forum: hardware
Topic: Master PSU repair - not going well
Replies: 14
Views: 407

Re: Master PSU repair - not going well

I posted about using a light bulb in this post. It includes a diagram :D

Mark
by 1024MAK
Mon Jun 18, 2018 11:38 am
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 39
Views: 522

Re: (Yet another) Memory Question

When you say you checked that IC14 (74LS245 data transceiver), do you mean you tested the chip from the faulty machine in a known good machine AND tried a known good 74LS245 in the faulty machine?

Mark
by 1024MAK
Mon Jun 18, 2018 11:34 am
Forum: hardware
Topic: (Yet another) Memory Question
Replies: 39
Views: 522

Re: (Yet another) Memory Question

If you have, or have access to an EPROM programmer, you can program Tricky's test 'ROM', then remove all ROM chips (including the OS ROM) and put the test ROM in the OS ROM socket. This should then show a picture if most of the rest of the 'core' system is functional. Tricky's test ROM does not need...
by 1024MAK
Mon Jun 18, 2018 11:14 am
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2612
Views: 215629

Re: Worth Taking a Look At

I guess one persons junk is another’s treasure, certain people in my household think any computer with less than 32 bits is junk. :) Computers with less than 32 bits are a bit rare. A ZX80 has 1024 bits and that's just the RAM... :lol: Mark Don't you mean 8192 bits of RAM? Err, yeah :lol: Been thin...
by 1024MAK
Sun Jun 17, 2018 6:04 pm
Forum: stardot.org.uk
Topic: Post editing
Replies: 59
Views: 696

Re: Post editing

Click this link to take you to the poll...

Mark
by 1024MAK
Sun Jun 17, 2018 5:38 pm
Forum: hardware
Topic: load from disc 1
Replies: 28
Views: 516

Re: load from disc 1

Well done =D>

I'm glad you got the 3.5" drive working.

Mark
by 1024MAK
Sun Jun 17, 2018 4:39 pm
Forum: stardot.org.uk
Topic: Post editing
Replies: 59
Views: 696

Re: Post editing

On the 'Last edited by' footers, showing a count of edits will discourage me from fixing minor typos. I share the view that a short 'grace period' during which edits can be made invisibly should be allowed, if the forum software is capable of that. That might be a good compromise solution. But I ge...
by 1024MAK
Sun Jun 17, 2018 1:03 pm
Forum: stardot.org.uk
Topic: Post editing
Replies: 59
Views: 696

Re: Post editing

Elminster wrote:
Sun Jun 17, 2018 12:31 pm
Ditto. I can’t see it either. Didn’t we have this issue the other day? Forget what causes it now.
No, this is a different thing, this time it was due to a mistake made by me.

Mark