Search found 35 matches

by NightBird
Wed Dec 11, 2019 7:47 pm
Forum: Technical questions
Topic: Atmos/Microdisk - ghost in the machine!?!?!?
Replies: 28
Views: 16692

Re: Atmos/Microdisk - ghost in the machine!?!?!?

Hi

Remember you have also this mod to improve Phi2, in compatibility with ROM/EPROMs: please read CEO-MAG no 288, april 2014, pp. 8-13.

Enjoy! :D
by NightBird
Mon Dec 09, 2019 10:35 pm
Forum: Technical questions
Topic: Atmos ROM
Replies: 33
Views: 39677

Re: Atmos ROM

Hi

For ROM/EPROM + Microdisc compatibility and Phi2 improvement, please also read CEO-MAG no 288, april 2014, pp. 8-13. :D
by NightBird
Tue Jul 24, 2018 5:47 am
Forum: General Discussion
Topic: California Devices Inc and the HCS10017
Replies: 31
Views: 28988

Re: California Devices Inc and the HCS10017

Wow! Bravo!
by NightBird
Mon Jul 23, 2018 9:10 pm
Forum: General Discussion
Topic: California Devices Inc and the HCS10017
Replies: 31
Views: 28988

Re: California Devices Inc and the HCS10017

Dbug wrote: Thu Jul 19, 2018 6:51 pm A decap of the ULA would be awesome, specially if we can reverse the logic accurately.
Who know, maybe we would discover some traces of some features they were planning to add but did not have time to :)
Do you know Deus Ex Silicium?
www.dexsilicium.com
by NightBird
Mon Apr 30, 2018 10:35 am
Forum: Technical questions
Topic: Merging video output?
Replies: 86
Views: 85851

Re: Merging video output?

An example: trying to merged RGB outputs to one input: - Red level #1: 100% of the signal. - Red level #2: 0% of the signal. - Red level #3: 0% of the signal. - Red level #4: 0% of the signal. Desired output for Red is 25% of the level? Is there a simply analog electronic schema to connect these inp...
by NightBird
Sun Apr 29, 2018 6:29 pm
Forum: Technical questions
Topic: Merging video output?
Replies: 86
Views: 85851

Re: Merging video output?

Hi,
Still thinking about hardware mods...
How did you merged the RGB signals?
Do you have a schematic?
by NightBird
Sun Dec 10, 2017 9:09 pm
Forum: Technical questions
Topic: Merging video output?
Replies: 86
Views: 85851

Re: Merging video output?

Please find below an idea to test... with a NAND gate and an input to Vcc to replace a NOT gate --> Only needs 2 packages DIL14. The 3 last gates delays (3x10ns) the clk, to try to have a better synchro. between the clks (perhaps it is better with less or more gates...). I do not know if it works, n...
by NightBird
Thu Dec 07, 2017 7:55 pm
Forum: Technical questions
Topic: Merging video output?
Replies: 86
Views: 85851

Re: Merging video output?

8) This is the kind of simple circuit I thought, to avoid something complicated like a complete PID controller. I will study the practical application on real Orics. But in your opinion is it possible to simplify again? (eg if you remove the LS04 between the 86 and the NAND, and replace the NAND by ...
by NightBird
Sat Dec 02, 2017 8:55 am
Forum: Technical questions
Topic: Merging video output?
Replies: 86
Views: 85851

Re: Merging video output?

@iss: nice work! - Thierry suggest to keep a common 12mhz clock, and just to throttle the secondary ULA until it get synced to the first one On my side I am looking for a simple schematic to do that; Below some links to clarify what I am looking for (in the electronic world): French: https://fr.wiki...
by NightBird
Sat Nov 25, 2017 8:55 am
Forum: Technical questions
Topic: Merging video output?
Replies: 86
Views: 85851

Re: Merging video output?

_05_p249_99ns_PhiOut.jpg
_06_p333_32ns_PhiOut.jpg
_PhiOut_ULA.jpg
Thierry
by NightBird
Sat Nov 25, 2017 8:54 am
Forum: Technical questions
Topic: Merging video output?
Replies: 86
Views: 85851

Re: Merging video output?

_02_m83_33ns_PhiOut.jpg
_03_p00_PhiOut.jpg
_04_p83_33ns_PhiOut.jpg
by NightBird
Sat Nov 25, 2017 8:51 am
Forum: Technical questions
Topic: Merging video output?
Replies: 86
Views: 85851

Re: Merging video output?

Yep, I missed that offsets are multiple of 83.3ns. Mike Brown's solutions is cool and I hope it will work. ... but having 2 equal ULA's is good idea too ;). EDIT: Dbug, which signals are actually on the scope? (I thought it's 12MHz, but the shape reminds the famous F2) Good question! Yes this is th...
by NightBird
Tue Sep 05, 2017 8:16 pm
Forum: Tape and floppy disk converters
Topic: FloppyBuilder evolution
Replies: 89
Views: 119981

Re: FloppyBuilder evolution

Dbug wrote: Tue Sep 05, 2017 7:13 am ... you need to use the right firmware, else the display stops working :)
My Cumulus (PCB ID #43) has a black dot on the PCB above the 3 buttons, so a S1D15G10 display.

If there is a new update of the firmware, I can try it too!
by NightBird
Mon Sep 04, 2017 11:42 pm
Forum: Tape and floppy disk converters
Topic: FloppyBuilder evolution
Replies: 89
Views: 119981

Re: FloppyBuilder evolution

But I'd try to produce a version of the game which simply bypasses the bug, because not everyone is going to update their firmware... And, besides, who would do it? :wink: The Cumulus firmware update seems easy to do? www.youtube.com/watch?v=WoVpMwnYQIY Is there a link for dowloading the latest upd...
by NightBird
Wed Jul 12, 2017 7:49 pm
Forum: Technical questions
Topic: How to install a 3" floppy drive on a modern pc?
Replies: 15
Views: 25228

Re: How to install a 3" floppy drive on a modern pc?

I have a HxC (drive A) and real drives (B, C) to generate real floppy discs (3 or 3,5 inches)
On PC (Win7), convert .dsk to .hfe, then copy hfe to SD card.
On real Oric boot on hfe then backup...