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GadgetUK164
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Hey!

Post by GadgetUK164 » Sun Jun 24, 2018 3:51 pm

Hey! My name is Chris, based in the Northwest of the UK! My first beeb, although I used the BBC a lot at school and college when I was younger. Fixed a few PSU and RAM faults when I was in the trade many years ago, but they were pretty robust machines and other than RAM, PSU and the occasional VIA, I never had much exposure to repairing them. I have a YouTube channel (in my signature), with a couple of recent BBC repair videos there. Whenever I start to look at a new system on my channel I tend to join the communties around that system and the BBC is no exception - lovely machine, kicking myself I didn't get one sooner! I am not an electronics expert, that is not my current career and hasn't been for a good 25 years, but never the less I do a lot of repairs and mods and enjoy tinkering with old hardware.
Retro Gaming Mods & Repairs - My YouTube Channel - https://www.youtube.com/GadgetUK164

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CMcDougall
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Re: Hey!

Post by CMcDougall » Sun Jun 24, 2018 3:57 pm

welcome Chris :)
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danielj
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Re: Hey!

Post by danielj » Sun Jun 24, 2018 4:13 pm

Hullo there Chris :)

cmorley
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Re: Hey!

Post by cmorley » Sun Jun 24, 2018 4:23 pm

Splendid machine & splendid community :)

Welcome!

Chris

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davidb
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Re: Hey!

Post by davidb » Sun Jun 24, 2018 5:12 pm

Welcome! :D

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oss003
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Re: Hey!

Post by oss003 » Sun Jun 24, 2018 5:24 pm

Welcome Chris and enjoy the forum .....

Greetings
Kees

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Multiwizard
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Re: Hey!

Post by Multiwizard » Sun Jun 24, 2018 5:32 pm

Hi Chris,

welcome to this great Forum... :D


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

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Re: Hey!

Post by daveejhitchins » Sun Jun 24, 2018 7:51 pm

Welcome to the Forum, Chris . . . Enjoy . . .

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, 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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tricky
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Re: Hey!

Post by tricky » Sun Jun 24, 2018 8:26 pm

Welcome,
I've just watched your three videos back-to-back as I couldn't stop watching.

I don't think retro software/stardot/"Tricky" have had such a prominent place in someone else's video before.

AstroBlaster supports the speech chip, but it requires a bank of sideways RAM.
DIYing 32KB in a sideways ROM slot should be a five minute job for you and you could tidy up your EPROM mod at the same time. I usually put mine in a socket, but I'm coming around to the idea of bending the pins up instead.

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flaxcottage
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Re: Hey!

Post by flaxcottage » Sun Jun 24, 2018 8:28 pm

Welcome, Chris. :D
- John
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cmorley
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Re: Hey!

Post by cmorley » Sun Jun 24, 2018 10:14 pm

tricky wrote:
Sun Jun 24, 2018 8:26 pm
AstroBlaster supports the speech chip, but it requires a bank of sideways RAM.
DIYing 32KB in a sideways ROM slot should be a five minute job for you and you could tidy up your EPROM mod at the same time. I usually put mine in a socket, but I'm coming around to the idea of bending the pins up instead.
But if you're bored of soldering there are some lovely plug and play SWRAM solutions :) - ones that accept 32KB EPROMs on the top too... EEPROM modules... what else have I got in stock :wink:

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tricky
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Re: Hey!

Post by tricky » Mon Jun 25, 2018 6:09 am

Those are excellent and I have recommended them to quite a few people, it just looks like he loves to solder his beeb ;)

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GadgetUK164
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Re: Hey!

Post by GadgetUK164 » Mon Jun 25, 2018 6:09 pm

Thanks everyone =D
tricky wrote:
Sun Jun 24, 2018 8:26 pm
AstroBlaster supports the speech chip, but it requires a bank of sideways RAM.
DIYing 32KB in a sideways ROM slot should be a five minute job for you and you could tidy up your EPROM mod at the same time. I usually put mine in a socket, but I'm coming around to the idea of bending the pins up instead.
Thanks =D I've got AstroBlaster all ready to go for the next video already =D I was just waiting for speech chip (which arrived today and does NOT work lol - pretty much what I expected from China, well - either that's faulty or the special ROM that goes with it). I will order a kit from eBay at the end of the week, and I was going to go for a ROM / RAM board too =D Thanks for the tip there on doing a DIY RAM upgrade! I realise it pretty straight forward but thought the modern sideways board would solve a lot of problems (less power used etc, and it means I can take that EPROM mod out). Glad you enjoyed the vids - I often make mistakes in my vids, there are a number there in those beeb vids as I kept referring to the VTI chips by the wrong code (vt2023 instead of vc2023 etc). So take some of what I say with a pinch of salt lol =D
cmorley wrote:
Sun Jun 24, 2018 10:14 pm
But if you're bored of soldering there are some lovely plug and play SWRAM solutions :) - ones that accept 32KB EPROMs on the top too... EEPROM modules... what else have I got in stock :wink:
Hehe, yes - I was looking at the ones that take EPROMs to start with - I liked the idea of having 14 or so chip sockets, but then decided perhaps one of the ones that has flash onboard plus sideways RAM might be better regards power and stuff. Having said that, I've just checked eBay and there are none left lol. I might have to go with a more traditional board with lots of ROM sockets!
Retro Gaming Mods & Repairs - My YouTube Channel - https://www.youtube.com/GadgetUK164

cmorley
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Re: Hey!

Post by cmorley » Mon Jun 25, 2018 6:19 pm

GadgetUK164 wrote:
Mon Jun 25, 2018 6:09 pm
Hehe, yes - I was looking at the ones that take EPROMs to start with - I liked the idea of having 14 or so chip sockets, but then decided perhaps one of the ones that has flash onboard plus sideways RAM might be better regards power and stuff. Having said that, I've just checked eBay and there are none left lol. I might have to go with a more traditional board with lots of ROM sockets!
Mine is all in stock :) I do the little ones which fit in individual ROM sockets. Simple to fit, simple to use.
stardot link: viewtopic.php?f=8&t=13766

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dv8
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Re: Hey!

Post by dv8 » Mon Jun 25, 2018 10:03 pm

GadgetUK164 wrote:
Mon Jun 25, 2018 6:09 pm
I was just waiting for speech chip (which arrived today and does NOT work lol - pretty much what I expected from China, well - either that's faulty or the special ROM that goes with it).
Something to be aware of with the speech chip: the frequency may need to be adjusted using the trim pot to the left of IC98. If it's set wrong it can prevent the chip from working, or in extreme cases stop the Beeb from booting at all.

To check it, put a multimeter/scope on pin 3 of the TMS5220 and adjust the pot until the frequency is as close as possible to 160KHz.

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DutchAcorn
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Re: Hey!

Post by DutchAcorn » Tue Jun 26, 2018 5:17 am

Welcome to Stardot, Chris! Enjoy.. :D
Paul

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tricky
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Re: Hey!

Post by tricky » Tue Jun 26, 2018 6:14 am

I was going to say the same thing about the frequency. In most of my Beeb's that pot has had to be twiddled around a few times to get it working so that the frequency can be adjusted.
The detection code in AstroBlaster has failed me on one model b (with an exotic add-on) and one master, but has been fine on everything else. The master doesn't have speech sockets, so it was a false positive - I probably shouldn't check on a master!

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Re: Hey!

Post by 1024MAK » Tue Jun 26, 2018 9:16 am

Welcome on board Chris!

:D :D :D

Enjoy the forum :D

You can make your confession here :mrgreen:
Put yourself on the map by sticking a pin in it at this link :P
You can list your Acorn machines vitals here

Mark

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GadgetUK164
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Re: Hey!

Post by GadgetUK164 » Wed Jun 27, 2018 2:57 pm

1024MAK wrote:
Tue Jun 26, 2018 9:16 am
Welcome on board Chris!

:D :D :D

Enjoy the forum :D

You can make your confession here :mrgreen:
Put yourself on the map by sticking a pin in it at this link :P
You can list your Acorn machines vitals here

Mark
Thanks =D
Retro Gaming Mods & Repairs - My YouTube Channel - https://www.youtube.com/GadgetUK164

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GadgetUK164
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Re: Hey!

Post by GadgetUK164 » Sat Jun 30, 2018 11:56 am

cmorley wrote:
Mon Jun 25, 2018 6:19 pm
GadgetUK164 wrote:
Mon Jun 25, 2018 6:09 pm
Hehe, yes - I was looking at the ones that take EPROMs to start with - I liked the idea of having 14 or so chip sockets, but then decided perhaps one of the ones that has flash onboard plus sideways RAM might be better regards power and stuff. Having said that, I've just checked eBay and there are none left lol. I might have to go with a more traditional board with lots of ROM sockets!
Mine is all in stock :) I do the little ones which fit in individual ROM sockets. Simple to fit, simple to use.
stardot link: viewtopic.php?f=8&t=13766
What games actually utilise sideways RAM? I've been trying to get a 62256 working temporarily (planned to swap out with one of your 32K RAM / ROM boards next week. I am finding the samples in Astro Blaster work fine, but if I load Exile and allow it to use the sideways RAM it freezes on the game screen as it starts - is there a minimum amount that Exile needs? What other games use it?
Retro Gaming Mods & Repairs - My YouTube Channel - https://www.youtube.com/GadgetUK164

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GadgetUK164
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Re: Hey!

Post by GadgetUK164 » Sat Jun 30, 2018 1:06 pm

I've sorted it! Turns out that connecting the WE to pin 1 of IC14 was the issue. Connecting WE to pin 8 of IC77 solved it.
Retro Gaming Mods & Repairs - My YouTube Channel - https://www.youtube.com/GadgetUK164

cmorley
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Re: Hey!

Post by cmorley » Mon Jul 02, 2018 10:00 am

GadgetUK164 wrote:
Sat Jun 30, 2018 11:56 am
What other games use it?
There are a few threads on here about SWRAM games but I don't know if anyone has compiled a definitive list.

Some require a Master 128 which has 4 banks of SWRAM in slots 4,5,6,7.

But many will detect and run on a B.

There is Exile, a colour version of Elite, Tricky's games, Firetrack has an enhanced version, dunjunz, holed out. Some adventure games use it - I think hobbit can... there are plenty more.

Time for a difinitive SWRAM games thread with B & Mater compatibility parhaps?

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GadgetUK164
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Re: Hey!

Post by GadgetUK164 » Thu Jul 05, 2018 7:28 pm

cmorley wrote:
Mon Jul 02, 2018 10:00 am
GadgetUK164 wrote:
Sat Jun 30, 2018 11:56 am
What other games use it?
There are a few threads on here about SWRAM games but I don't know if anyone has compiled a definitive list.

Some require a Master 128 which has 4 banks of SWRAM in slots 4,5,6,7.

But many will detect and run on a B.

There is Exile, a colour version of Elite, Tricky's games, Firetrack has an enhanced version, dunjunz, holed out. Some adventure games use it - I think hobbit can... there are plenty more.

Time for a difinitive SWRAM games thread with B & Mater compatibility parhaps?
Thanks =D I wasn't aware of Firetrack, dunjunz or holed out =D
Retro Gaming Mods & Repairs - My YouTube Channel - https://www.youtube.com/GadgetUK164

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