Search found 268 matches

by mmu_man
Fri Apr 09, 2021 7:45 pm
Forum: Hardware hacks and extensions
Topic: Philips D6260 K7 deck bulk repair
Replies: 22
Views: 3304

Re: Philips D6260 K7 deck bulk repair

There's one on eBay in Germany

I don't think DBuG has tested his already?
by mmu_man
Thu Mar 11, 2021 9:47 pm
Forum: General Discussion
Topic: Téléstrat frustration
Replies: 18
Views: 1413

Re: Téléstrat frustration

Actually if I trust the schematics the -12V comes from the PSU *after* the first 1000.
And yes, these old power supplies can be nasty.
by mmu_man
Sat Mar 06, 2021 3:25 pm
Forum: Hardware hacks and extensions
Topic: Erebus.
Replies: 6
Views: 1428

Re: Erebus.

Although, in the case of peripherals using the same IO they will end up having trouble on the data bus anyway, but yeah…
by mmu_man
Sat Mar 06, 2021 2:16 pm
Forum: Hardware hacks and extensions
Topic: Erebus.
Replies: 6
Views: 1428

Re: Erebus.

We should to use open collector/drain or Tri-state outputs on /MAP, /ROMDIS, /IRQ, /I/O_CTRL and /RESET lines. Open-collector and tri-state are not the same. Open-collector basically creates an AND gate with all participating outputs, so any one setting it to 0 will get a 0 on the line. Tri-state i...
by mmu_man
Sat Mar 06, 2021 1:49 pm
Forum: Technical questions
Topic: ULA versions
Replies: 15
Views: 4411

Re: ULA versions

My ORIC-1 has a:
HCS 10017 | CDI-7C | 8316

My own Atmos:
HCS 10017 | CDI/8F | 8409

For the other two Atmos, one was never open and the other one:
HCS 10017 | CDI/8F | 8405
by mmu_man
Tue Mar 02, 2021 5:46 pm
Forum: Hardware hacks and extensions
Topic: Protek joystick interface diagram ?
Replies: 30
Views: 6223

Re: Protek joystick interface diagram ?

Ok, checking on RS-online, the lowest threshold voltage available for shottky diodes seems to be 240mV. Depending on the internal transistor voltage drop it might work.
by mmu_man
Sat Feb 27, 2021 1:07 am
Forum: Hardware hacks and extensions
Topic: Protek joystick interface diagram ?
Replies: 30
Views: 6223

Re: Protek joystick interface diagram ?

<big voice> Are you telling me when I'm not around people design electronics without caring about open collector lines ? </big voice> Joking, you can't know everything, these kind of things are usually taught during several years at engineering school… Putting diodes should work, as long as the inte...
by mmu_man
Sat Feb 27, 2021 12:18 am
Forum: Hardware hacks and extensions
Topic: Oric extender - a basis for DIY projects and experiments
Replies: 35
Views: 5057

Re: Oric extender - a basis for DIY projects and experiments

There's an attempt at Seilebost's site (scroll down) http://passionoric.free.fr/eng/oric.htm It's already a nice effort, but yeah something more up to date would be cool with all the new hardware around :) I sent a mail asking for permission to reuse but never got any reply. It's not like it's much...
by mmu_man
Sat Feb 27, 2021 12:04 am
Forum: Hardware hacks and extensions
Topic: ORIC SDCARD
Replies: 168
Views: 60374

Re: ORIC SDCARD

Truth be told, I had to base the depth of the case on an educated guess as I didn’t have the SD card module at hand at the time I was modeling the case. Hence, it’s protruding. Also, in hindsight, I did realize it would’ve made more sense to put the whole card the other way around with the connecto...
by mmu_man
Fri Feb 19, 2021 2:32 am
Forum: General Discussion
Topic: Jasmin 2 power supply
Replies: 4
Views: 558

Re: Jasmin 2 power supply

Doesn't it have a cut on the bottom for the EXP cable? Why is it getting out from drive2 hole? :-p
by mmu_man
Fri Feb 19, 2021 2:22 am
Forum: General Discussion
Topic: Jasmin 2 power supply
Replies: 4
Views: 558

Re: Jasmin 2 power supply

You can find schematics here . Note the power connector has pins drawn not in order. And also they labelled it +5 and +12 but it's wrong as well. The power brick itself claims to be 8V and 15V, although it's actually quite more when measured. This is because the regulators are inside the Jasmin, so ...
by mmu_man
Tue Feb 16, 2021 10:46 pm
Forum: Hardware hacks and extensions
Topic: ORIC SDCARD
Replies: 168
Views: 60374

Re: ORIC SDCARD

You know there are black versions of the HE10 :-)
by mmu_man
Tue Feb 16, 2021 10:38 pm
Forum: Hardware hacks and extensions
Topic: ORIC SDCARD
Replies: 168
Views: 60374

Re: ORIC SDCARD

I'm still not too fond of 3D printing for such cases but I must admit it looks way better than the Cumulus already!
But why put the SD slot at the bottom and not on the top part (at the red-black junction)?
On the other end I the blue SD part protruding from the Cumulus doesn't look that nice either…
by mmu_man
Sun Jan 31, 2021 8:30 pm
Forum: General Discussion
Topic: Season greetings!
Replies: 40
Views: 12200

Re: Season greetings!

With 3 hours and 30min left I and my machines can still wish you a Happy New Year!

ORIC_NewYear2021_DSCN1029.jpg

More on Twitter or Mastodon.
by mmu_man
Thu Jan 21, 2021 2:20 am
Forum: Hardware hacks and extensions
Topic: Philips D6260 K7 deck bulk repair
Replies: 22
Views: 3304

Re: Philips D6260 K7 deck bulk repair

Just saw one in GB on eBay if anyone is interested.