Hi, I'm Rod from Somerset

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Hi, I'm Rod from Somerset

Post by rodders » Thu Jun 25, 2020 5:32 pm

Recently decided to dust off the old Model B (upgraded A) machine and see if it still works. I'd recapped the power supply a few years ago the last time I got it out because it started to smoke shortly after booting up.
Gradually cleaning things up and building the system in stages, the Beeb boots up and the floppies are working, I've even put new belts in the tape drive but haven't tried that yet. Took the slightly leaky battery off the Watford 12 Rom board and soldered a new one that I had bought at the same time as the PSU caps but haven't fitted the board into the beeb yet because of the ROM polka that will be needed. I seem to remember it was a bit flaky anyway, probably due to overheating, so I've ordered a fan and some thermistors to see if I can get it under control. The 6502 second processor is still in its box so far.
In order to bring the beeb into the 21st century I have fitted a TurboMMC board which fires up great but I was disappointed to find that you need sideways RAM to copy floppies to it, so I can't do that until I have the Watford board sorted. Reading through the documentation - and this forum - it appears that the MMFS rom will allow copying of floppies without sideways RAM - is this true or does it suffer from the same problem when switching back and forth between it and DFS?
Just a word of caution - after removing the battery from the Watford board I decided to clean the area with IPA and the silk screen printing started to float off!!
Keep safe.
BBC Model B 32k issue 3, WE ROM/RAM board, Speech Processor, 6502 Second Processor

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Lardo Boffin
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Re: Hi, I'm Rod from Somerset

Post by Lardo Boffin » Thu Jun 25, 2020 6:03 pm

Hi Rod

Welcome to the forum!

If you need a modern alternative to the RAM / ROM board try some of these:

Atom, issue 5
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Acorn 6502 coproc
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc
USA Model B
BBC Master, Datacentre + HDD, pi co-proc, econet, NULA

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Re: Hi, I'm Rod from Somerset

Post by flaxcottage » Thu Jun 25, 2020 8:32 pm

Welcome, Rod. :D

I second the BooBip SWR/EEPROM/ROM boards. All my Beebs are decked out with them except one which has an ATPL board as I need to use several ROMs bigger than 16K, such as Inter-Chart and Spellmaster.
- John


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Re: Hi, I'm Rod from Somerset

Post by daveejhitchins » Thu Jun 25, 2020 8:38 pm

Welcome to the Forum, Rod . . . 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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Re: Hi, I'm Rod from Somerset

Post by davidb » Thu Jun 25, 2020 8:40 pm

Welcome! :D

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Re: Hi, I'm Rod from Somerset

Post by Multiwizard » Thu Jun 25, 2020 8:54 pm

Hi Rod,

welcome to this great Forum... :D

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

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Re: Hi, I'm Rod from Somerset

Post by tricky » Mon Jun 29, 2020 4:24 pm

Welcome, if you have working floppies, you might like to look at a GOTEK.
I think that the MMFS disc copy program might work, but I'm not sure - I wonder if beeb wiki has any MMC compatible disc copy utilities.
Watch out for mould on your floppies.

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Re: Hi, I'm Rod from Somerset

Post by Yrrah2 » Tue Jun 30, 2020 6:38 am

Welcome Rod!
Happy with my BBC Master

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