Search found 219 matches

by simonm
Sat Jan 12, 2019 2:42 pm
Forum: hardware
Topic: Free ICs to Good Home.
Replies: 24
Views: 959

Re: Free ICs to Good Home.

IMG_20190112_143639.jpg
Arrived today! I have sound chips to play with! Thanks so much, I owe you a beer sir!
by simonm
Mon Dec 17, 2018 2:57 pm
Forum: hardware
Topic: Free ICs to Good Home.
Replies: 24
Views: 959

Re: Free ICs to Good Home.

Ooh yes please. I've emailed you for re-homing a spare SN76489 and YM2149 sound chip!
\:D/
by simonm
Mon Dec 03, 2018 12:47 am
Forum: programming
Topic: Split screen modes
Replies: 2
Views: 180

Re: Split screen modes

There's a post here talking about that very thing:
viewtopic.php?p=149157#p149157
by simonm
Wed Nov 28, 2018 12:06 am
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3536

Re: Repairing a dead A310 power supply

IanS wrote:
Tue Nov 27, 2018 10:12 pm
I'd offer to look in my (unexploded) A310 PSU for the C2 value, but it looks suffiently different to yours, that it may not be helpful.
Thanks Ian. Crumbs, very different looking psu's! I wonder if my other A310 will be the same psu now!
by simonm
Wed Nov 28, 2018 12:04 am
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3536

Re: Repairing a dead A310 power supply

For C1, 0.01uF is a 10nF. Both the same value, just using a different SI multiplier. For C2, if it physically fits, a 100nF (or 0.1uF) type will be fine. They are interference suppression capacitors, so the value is not critical. Both C1 and C2 must be X2 rated (for safety) as they are connected ac...
by simonm
Tue Nov 27, 2018 9:11 pm
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3536

Re: Repairing a dead A310 power supply

Seems the caps on this board are very similar but not quite to the ones in Retroclinic's BBC cap repair kits.

C1 = X2 0.01uF (RC's are 10nF X2 RIFA)
C9 = 25V 470uF (RC's are 35V 220uF)
C2 = ??? (the popped one has burned so no idea what it is apart from some type of RIFA) (RC's are 100nF X2 RIFA)
by simonm
Tue Nov 27, 2018 8:25 pm
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3536

Re: Repairing a dead A310 power supply

Ok. I decided to get gnarly with it. It pops out if you encourage it upwards with a screwdriver.
Right so now I can see the PCB. There are loads of caps! But which ones will be borked or nearly borked?
IMG_20181127_202012.jpg
IMG_20181127_202021.jpg
Here's the silver popped one
IMG_20181127_202107.jpg
Yep deffo explodinated
by simonm
Tue Nov 27, 2018 8:03 pm
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3536

Re: Repairing a dead A310 power supply

Thanks for help so far.
Does anyone know how I get the black grommet loosened? I can't get the PCB out unless I can remove it.
IMG_20181127_200049.jpg
by simonm
Mon Nov 19, 2018 6:59 pm
Forum: hardware
Topic: Replacement fan for A310
Replies: 5
Views: 245

Re: Replacement fan for A310

Interested in this too for exact same reason - new fan and filter for A310. I was eyeing up this one:
Look at this on eBay http://www.ebay.co.uk/itm/123215347110

But then you said 50mm ... #-o !
by simonm
Mon Nov 19, 2018 12:49 am
Forum: archive submissions
Topic: Manic Miner / JSW1 / JSW2 Combi
Replies: 8
Views: 392

Re: Manic Miner / JSW1 / JSW2 Combi

Bit of a tangent, but speaking of jet set Willy, this site has been busy creating tilemaps of it for pc...

https://simonowen.com/spectrum/tilemap/
by simonm
Tue Oct 16, 2018 6:59 pm
Forum: software: other
Topic: Swift python files missing - help!?
Replies: 7
Views: 310

Re: Swift python files missing - help!?

Out of interest, what features/functionality does swift have that you particularly wanted to use?
by simonm
Sun Sep 23, 2018 6:16 pm
Forum: hardware
Topic: Question About Graphics Modes
Replies: 36
Views: 1041

Re: Question About Graphics Modes

Probably because 8 colours is 3-bits per pixel and in an 8-bit, byte based machine that's a pain to work with - much easier to blob pixels into bit quantities of 1, 2 or 4 that pack neatly into 8-bit bytes.

EDIT: As Gerald said also. Posted at same time!
by simonm
Sun Sep 23, 2018 6:10 pm
Forum: software: new games
Topic: New game for the BBC Master : Planet Nubium
Replies: 27
Views: 3028

Re: New game for the BBC Master : Planet Nubium

This is really good! Love the graphics, and it's nice to play a game that's not teeth grindingly hard for a change!! :D I only played the first five levels so far, but felt it was quite easy overall (but maybe the later levels get harder, I havent seen them yet) Couple of suggestions if you fancy: G...
by simonm
Sat Sep 22, 2018 10:51 pm
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3536

Re: Repairing a dead A310 power supply

Ok, so I had some time to disassemble a bit more of the beast. The PSU in situ 2018-09-22 23.02.41.jpg The ganky motherboard 2018-09-22 23.06.58.jpg This was rattling around inside the PSU - looks like what's left of a capacitor 2018-09-22 23.17.18.jpg The PSU - so my question is, how is this PCB di...
by simonm
Thu Sep 20, 2018 7:54 am
Forum: hardware
Topic: A5000 but no display..."Out of Range"
Replies: 13
Views: 568

Re: A5000 but no display..."Out of Range"

Thanks for the tips folks!
by simonm
Wed Sep 19, 2018 3:14 pm
Forum: hardware
Topic: A5000 but no display..."Out of Range"
Replies: 13
Views: 568

Re: A5000 but no display..."Out of Range"

While the machine is stripped it could be a good idea to replace the PSU fan with a silent type. It will make using the computer much nicer. This will involve opening the PSU and soldering wires together though. This sounds interesting - could you advise a suitable replacement fan? Would that same ...
by simonm
Tue Sep 18, 2018 10:06 am
Forum: software & utilities for the pc, mac or unix
Topic: Request for help in organising/releasing source code
Replies: 92
Views: 3862

Re: Request for help in organising/releasing source code

Releasing the source as a zip may not be as sophisticated as putting it on GitHub, but it has achieved what I set out to. Absolutely, and a perfectly fine way to do it - entirely your prerogative how you want to distribute your own projects. That said, you might wish to consider putting some type o...
by simonm
Mon Sep 17, 2018 8:37 pm
Forum: projects
Topic: 160 x 128 mode
Replies: 21
Views: 756

Re: 160 x 128 mode

The bitshifters slack channel just lit up on the back of this revelation... :lol:
by simonm
Mon Sep 17, 2018 7:34 pm
Forum: projects
Topic: 160 x 128 mode
Replies: 21
Views: 756

Re: 160 x 128 mode

=D> oh my....
by simonm
Sun Sep 16, 2018 7:45 pm
Forum: archive submissions
Topic: Reet Petite -Jackie Wilson-digiMusic
Replies: 11
Views: 1756

Re: Reet Petite -Jackie Wilson-digiMusic

Haha! Nice one Rob, love it. :lol:
Out of interest, what method did you use to convert the audio?
by simonm
Sun Sep 16, 2018 5:47 pm
Forum: software & utilities for the pc, mac or unix
Topic: Request for help in organising/releasing source code
Replies: 92
Views: 3862

Re: Request for help in organising/releasing source code

Richard Russell wrote:
Sun Sep 16, 2018 4:12 pm
That would certainly be very helpful to me.
As promised then, hopefully it is of some use!
by simonm
Sun Sep 16, 2018 5:39 pm
Forum: development tools
Topic: Using GitHub - introduction & tutorial
Replies: 3
Views: 279

Using GitHub - introduction & tutorial

Hi all, Github/git has come up a few times in various discussions, and often in the context of folks who have some source code or a project they want to publish in the public domain, but are perhaps put off because at first inspection the world of git and Github can seem a bit overwhelming. I though...
by simonm
Sun Sep 16, 2018 4:05 pm
Forum: software & utilities for the pc, mac or unix
Topic: Request for help in organising/releasing source code
Replies: 92
Views: 3862

Re: Request for help in organising/releasing source code

What are the pros and cons of doing that rather than using my own GitHub account, for example? I always think of StarDot as being closely associated with Acorn, and 'my' BASICs (unlike Brandy for example) are absolutely not! :evil: An excellent question. There are no right or wrong ways to go about...
by simonm
Sun Sep 16, 2018 11:08 am
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3536

Re: Repairing a dead A310 power supply

Thanks, I think I'm going to journal what I do, in the event its helpful for future hardware beginners like me. I recommend that you open it up and carry out a visual inspection by eye (under a good light) looking for any physical trace of the cause of the smoke, such as soot marks, blackened, damag...
by simonm
Sun Sep 16, 2018 9:26 am
Forum: software & utilities for the pc, mac or unix
Topic: Request for help in organising/releasing source code
Replies: 92
Views: 3862

Re: Request for help in organising/releasing source code

If you think it appropriate Richard, your project could be easily added as-is to the stardot GitHub organisation alongside other open source community projects. Github is actually quite straight forward to use once you acquire a few bits of know how, and I'm continually impressed with how collaborat...
by simonm
Sat Sep 15, 2018 12:13 pm
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3536

Re: Repairing a dead A310 power supply

Resurrecting this thread in the hope some kind folks could help out a non-hardware-techie type like me with fixing an old A310 I bought on gumtree. The seller wanted to show me it working, but when he did, a bunch of smoke came out of the machine so he offered it for just a tenner - bargain! :D So, ...
by simonm
Thu Sep 13, 2018 10:35 am
Forum: projects
Topic: Happy Mrs Chicken!
Replies: 52
Views: 4268

Re: Happy Mrs Chicken!

Having worked on official Peppa Pig games, I can say that they do endeavour to protect their copyright but not that aggressively - there were at one point a whole slew of knockoff Android PP apps. Realistically, rights holders aren't going to eat the cost of enforcing against hobby projects like thi...
by simonm
Sun Aug 19, 2018 9:04 am
Forum: software
Topic: !Tracker music software
Replies: 22
Views: 829

Re: !Tracker music software

Pretty sure I have this. Not sure when I'll get a chance to download it though, but will try over next week.
by simonm
Mon Aug 13, 2018 11:28 am
Forum: software: new games
Topic: New version of Scramble for the beeb (going well)
Replies: 140
Views: 9525

Re: New version of Scramble for the beeb (going well)

Agree with Rich. This is crazy good for a beeb. Amazing work tricky. Would love to see a 'how it works' type blog if you ever feel so inclined.
by simonm
Tue Jul 24, 2018 8:55 am
Forum: hardware
Topic: John Kortink's BBC HDMI
Replies: 29
Views: 1682

John Kortink's BBC HDMI

Not sure if already posted on here, but I noticed that John Kortink has been building up a HDMI converter for the Beeb...
https://twitter.com/WindfallNL