Oric Atmos mod 63(b)

If you want to ask questions about how the machine works, peculiar details, the differences between models, here it is !
How to program the oric hardware (VIA, FDC, ...) is also welcome.
User avatar
HigashiJun
Flying Officer
Posts: 205
Joined: Tue Dec 10, 2019 9:29 am
Location: Tokyo (Japan)

Oric Atmos mod 63(b)

Post by HigashiJun »

Just a question for specialists:

Is it worth doing this mod on ATMOS if there is no boot problem ?

Thanks in advance for your comments.
HigashiJun
User avatar
HigashiJun
Flying Officer
Posts: 205
Joined: Tue Dec 10, 2019 9:29 am
Location: Tokyo (Japan)

Re: Oric Atmos mod 63(b)

Post by HigashiJun »

Ok, I made this 63(b) mod and I cannot see any improvement in the boot process...

My ATMOS boots as before. The only issue is the boot screen itself: without this mod, I had a clean boot pattern and once the mod performed, I have garbage on my screen. :(

I will check more but I guess I will desolder all these unnecessary resistors sooner or later.
HigashiJun
User avatar
iss
Wing Commander
Posts: 1641
Joined: Sat Apr 03, 2010 5:43 pm
Location: Bulgaria
Contact:

Re: Oric Atmos mod 63(b)

Post by iss »

HigashiJun wrote: Sat Oct 24, 2020 8:31 amIs it worth doing this mod on ATMOS if there is no boot problem ?
In short: It's not worth it. :)
This 63(b) mod maybe will help if there are real problems with boot. With working Oric it can make things worst.
User avatar
HigashiJun
Flying Officer
Posts: 205
Joined: Tue Dec 10, 2019 9:29 am
Location: Tokyo (Japan)

Re: Oric Atmos mod 63(b)

Post by HigashiJun »

iss wrote: Sat Nov 21, 2020 10:51 am
HigashiJun wrote: Sat Oct 24, 2020 8:31 amIs it worth doing this mod on ATMOS if there is no boot problem ?
In short: It's not worth it. :)
This 63(b) mod maybe will help if there are real problems with boot. With working Oric it can make things worst.
:D :D :D

I only hope this will be useful for other forum members...

Cheers.
HigashiJun
User avatar
Symoon
Archivist
Posts: 2307
Joined: Sat Jan 14, 2006 12:44 am
Location: Paris, France

Re: Oric Atmos mod 63(b)

Post by Symoon »

Well I don't know what this mod is (don't bother explaining, I guess it's in the service manual, I just didn't bother checking as I have no knowledge in electronics), but yes it's been useful for me!
=> Now I understand why my very first Oric-1 has a nice boot pattern (checkerboard, sort of), and why others have garbage: I guess Oric applied this mod to more recent machines. I've been wondering why since I dicovered the garbage boot screen ;)
Post Reply