New guy

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FelisSapien
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New guy

Post by FelisSapien » Sun Apr 15, 2018 6:44 pm

Hey gang,

Popping in to say hi... recently acquired a non-working BBC Micro Model B. A quick look suggests the major issue is with the power supply so I've ordered a cap kit. We'll see where that takes us. The unit otherwise looks clean enough but could do with a dose of retrobrite.

Really interested in this piece of history. Although BBC Micros were rolling into schools during my time there I pretty much missed out on using them completely. I spent more time in front of TRS-80s and the odd CBM PET. I didn't get particularly close to one outside of school either. I remember playing Chuckie Egg and Daredevil Dennis briefly but that was about it.

Once I've got my B up and running I'll look for a coding challenge. I've dabble with 6502 assembler on the 8-bit Atari's so that's probably my starting point.

Anyhoo, pleased to meet you all!

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CMcDougall
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Re: New guy

Post by CMcDougall » Sun Apr 15, 2018 6:50 pm

welcome Felis :)

if the X2 caps have blown, you can still use it without trouble, unless you are listening to analogue radio!
so, get it fired up & check all keys work, etc

Have Fun 8)
ImageImageImage

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Multiwizard
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Re: New guy

Post by Multiwizard » Sun Apr 15, 2018 6:51 pm

Hi,

welcome to this great Forum... :D


Greetings from my little Dutch Acorn Attic, Wim... :-)

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oss003
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Re: New guy

Post by oss003 » Sun Apr 15, 2018 6:57 pm

Welcome and enjoy the forum .....

Greetings
Kees

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Elminster
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Re: New guy

Post by Elminster » Sun Apr 15, 2018 7:45 pm

Welcome, many hours of coding and hardware tinkering to be had here.

Coeus
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Re: New guy

Post by Coeus » Sun Apr 15, 2018 8:14 pm

Welcome aboard. There is no doubt the BBC micro is a very significant piece of computing history and we like to keep them going. If yours turns out not to be as simple a problem as you think do post on the 8bit hardware forum here where there are plenty of knowledgeable people to help. And good luck with this as a hobby.

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davidb
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Re: New guy

Post by davidb » Sun Apr 15, 2018 9:23 pm

Welcome! :D

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tricky
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Re: New guy

Post by tricky » Sun Apr 15, 2018 10:30 pm

Welcome,
You might be interested in beebasm which can be found at our old site http://www.retrosoftware.co.uk/wiki/ind ... =Main_Page, along with some other useful stuff.
For assembler and low level knowledge, The Advanced User Guide is great.
We also love to share our knowledge.
If you want to try out some beeb software, have a look at our archive http://bbcmicro.co.uk

FelisSapien
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Re: New guy

Post by FelisSapien » Mon Apr 16, 2018 7:56 am

Thanks all. Very much looking forward to tinkering!

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daveejhitchins
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Re: New guy

Post by daveejhitchins » Mon Apr 16, 2018 12:30 pm

Welcome to the Forum, FelisSapien . . . Enjoy . . .

Good luck with your coding - We expect greatness :mrgreen:

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

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DutchAcorn
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Re: New guy

Post by DutchAcorn » Mon Apr 16, 2018 2:16 pm

Welcome! And good luck getting up and running! :D
Paul

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flaxcottage
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Re: New guy

Post by flaxcottage » Mon Apr 16, 2018 8:20 pm

Welcome, FelisSapien. :D
- John
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FelisSapien
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Re: New guy

Post by FelisSapien » Tue Apr 17, 2018 7:23 pm

Replacing the caps in the power supply did the trick. We have life!

Now to get my bearings... expect to see me popping up around the other areas of the board. Fairly early on I'm going to need to establish some method of loading/saving.

A quick question... is it normal for the internal speaker to quietly whine/whistle?

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Lardo Boffin
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Re: New guy

Post by Lardo Boffin » Tue Apr 17, 2018 7:27 pm

The beeb speaker often has background noise. I suspect one of the technical people on here can tell you how to sort it - I believe you need to solder a resistor somewhere.

For loading and saving I have just ordered two of these:-

viewtopic.php?f=8&t=12689&start=30
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Viglen twin 40/80 5.25" discs, Acorn 6502 coproc
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc
BBC Master, Datacentre + HDD, pi co-proc

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trixster
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Re: New guy

Post by trixster » Tue Apr 17, 2018 7:37 pm

Hello!
A3020 | A3000 | A420/1 | BBC B + 128K RAM/ROM + 20K Shadow + Pi0 + VideoNuLA
Master Turbo + DC + BeebSID | Atom | A4000 060 | A3000 060 | A1200 060 | A500
Atari Falcon 060 | Saturn | PS1 | SNES | CPC6128 | C64 | 3DO | MD | Jaguar

emeu1
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Re: New guy

Post by emeu1 » Thu Apr 19, 2018 6:46 pm

Hi,

also from me, welcome to this forum.

And as for retrobrighting, last weekend I 'retrobrighted' my Electron and now it looks almost like new.
I can therefor really recommend to retrobright your BBC.

Best regards,

Erik

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tricky
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Re: New guy

Post by tricky » Thu Apr 19, 2018 7:12 pm

One of my beebs was noisy, so I soldered a 10K ohm resistor across a jumper and connected it to the audio in on the 1MHz bus and the GND parallel.
I don't know if this is the correct solution, but it worked for me.
Now I have made up a D2A resistor ladder and connected it to the parallel printer port and the audio-in.
It seems to have a similar quieting effect, but now I can play sampled music ;)

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