Discussion in 'SIG: 8-Bit Hardware' started by Andy Barr, Aug 16, 2020.
How's things going with Andy's Microdrive to Gotek conversion?
Have finally got a bit of time off this week to take Bev out for some days exploring the nearby country houses/stately homes to celebrate her birthday on Wednesday.
I've also finally got my Acer laptop rebuilt with a non-persistent-screaming-for-a licence-number copy of Windoze 7 running on a solid state h/d - much whizzier and the 1st time I;ve used one so that's another bonus.
Meanwhile, the plasterboards and insulation are going up/in this week and the sparky has rewired our kitchen so at long last things are beginning to look the part here...still, a good way to go yet though as we still need: kitchen windows, kitchen underfloor heating and tiles, new electric consumer unit, extension skylight, middle room outer wall and windows pulling down and new french doors fitted and finally...new staircase up to the loft - which I'm dreading as that's where my refuge is under that staircase so when that area gets nuked - that's my inner mancave gone and we've got sweet F.A. space to put any of the computers, peripherals, software, books, mags and heaps of other junk anywhere else so where I'm to temporarily store it remains to be solved!
Anyway, whatever, worse things happen and thanks very much for continuing to try and solve the 3" drive dilemma, fellas.
Last time I spoke to Richie, I believe my faulty Oric-1 was working and was being soak-tested - I'm sure Rich has made a real sweet job of that - and the microdisc was being "fitted up" to take a temporary GOTEK solution but with the option to revert back to a working 3" drive should a reasonably priced compatible replacement drive appear as I would lurve to see the old gal back to her working original condition and state - but am inclined to think that is probably a long shot so long live Gotek for now.
Anyhow, I'm very very grateful to you both and will make sure that both you chaps are properly recompensed for all the effort you've put in to this project and continue to put in.
I'm sure I can come up with some retro goodies for Richie in the long run in either the Dragon, Beeb/Elk and or Oric departments and what I can do for you, Graham, is one day get you a decent priced Atmos. As Richie points out, right now the blatant overpricing going on on Feebay etc amounts to daylight robbery. I wouldn't pay more than £90-100 for an unboxed working Atmos and for a boxed model in great nick, I believe £150 to be the absolute max - and then I'd expect a decent selection of software, books and mags (being a Yarkshireman, you wouldn't expect anything less of me!)
Any road, onwards and upwards. There's no rush whatsoever and I'm presently exploring the other drive options I have here for the Oric so standby 1-2 new posts on ORIC OPTIONS...
Once more, many thanks Rich & Graham for all your help, energy, expertise and enthusiasm to the Oric cause!
It’s not going to work sadly, the bracket for the Gotek is too small and it doesn’t look good behind the Microdisc cover plate, too many gaps.
I think the way to use a Gotek going forward would be to set the Jumper on the 3” to drive 2 and connect the Gotek externally as drive 1. I am going to try this today so I can test if it can format or read a disk. It might be out of alignment.
I don’t have the kit to fabricate a bespoke fascia for a Gotek to fit internally so my options are a bit limited on that front.
The Oric-1 is fixed and works well. It’s a very early production run model ( probably less than 2000 ) although it’s serial number is missing. It’s a issue 2 PCB with two 8K EPROMs as the ROM. Which means no ROMDIS pin ( only the mask ROM had this ) so no external upgrade will work as they cannot disable the internal ROM. Only very early Oric’s have this setup. Most are issue 3 boards with a 16K V1.0 mask ROM. I haven’t been able to work on it as much as I’d like as I have had several falls and have been incapacitated for several days.
Lovely to hear from you and thank you for the update.
Fascinating to hear of where that particular Oric fits in, historically, in the production run timeline: a ruddy early beast, eh?
Right now retro retrograde microdisc fittings can take 3rd/4th/5th place backseat priority as health and you and yours are 1st.
No worries, many thanks for all you've done so far and just take darn good care mate and go steady on those feet.
Falls are bloody nasty shocks to our systems (I take much more care now on our staircase) and can really knock us back so please go uber careful on those pins, Richie.
Cheers once more, guys.
Just a little footnote I read tonight (I think you mentioned this briefly once before, Rich - maybe you'd been talking to Steve Marshall on the subject?)
Anyway, here's an English translation from an article which appeared on Microdisc problems in the Jan-Feb edition of Theoric back in 1986:
"Since December, we have been receiving a lot of correspondence from Oric users who after having chosen to buy a MICRODISC to complete their equipment, they were forced to realize that it did not work with their ATMOS. Returning to the dealer ... who took care not to specify that the MICRODISC manufactured by EUREKA only works correctly with the new ATMOS. The solution?
Disburse good people! We propose the exchange of the ATMOS card against 533FF which places the MICRODISC at 3000FF. Obviously, if you have an ATMOS "made in Normandy" this does not concern you.
In conclusion, before buying arrive at your favourite dealer with the ATMOS under your arm, it will save you a lot of trouble later. A little test in the store will help you choose."
I think the top and bottom of this is that there are indeed cases whereby certain "motherboard issues" inherent in some Atmoses will cause problems as they are not always compatible with "timings" etc on the Microdisc board - in other words, one Atmos might work fine with a given Microdisc drive...but yours/someone else's just might not so TRY BEFORE YOU BUY!
Sheesh...in other words, it's Russian Roulette dependent on when/where your Atmos was manufactured.
That's an annoying issue, makes buying an utter lottery, I presume there's no check and fix?
Exactly, Paul - their advice was literally try before you buy.
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