in fact no, just the regulator removed and +5v injected directly from a 5v regulated power supply... then need to socket the 4116 but several looks bad (a lot of oxydes) On 07/09/2016 18:06, Mike Stein wrote: > Sounds OK but seems like a lot of trouble and mods; why? > > m > > ----- Original Message ----- > From: "Didier Derny" <didier@aida.org> > To: <cbm-hackers@musoftware.de> > Sent: Wednesday, September 07, 2016 7:29 AM > Subject: use of +12 and -5 on commodore 8032 > > >> Hi >> >> any idea if +12v and -5v are used for anything else than the 4116 ? >> >> the idea: >> all original regulator removed (easy to put back in place) (+5 +12 -5 >> disconnected from the original power supply) >> +5v regulated directly injected on the motherboard >> +12V connected to +5v regulated (strap between the 2 regulator output ) >> 4164 installed in place of 4116 >> >> the 4164 would get 5v by the 12v track (now 5v with the modification) >> pin 1 -5v not connected (-5v removed) >> pin 8 +5v (+5v coming by 12v track) >> pin 9 A7 (forced to 5v by 5v track) >> >> seems similar on some modification made on atari >> >> may any potential side effect on some other part of the system... >> I dont see any real use of the +12v and -5v except for the 4116 >> but I might have missed something >> >> for the +9v unregulated I never found any used except for the tape >> but I'll probably never use a commodore tape... >> >> the main idea is to avoid any permanent modification on the board... >> -- >> didier >> >> Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2016-09-07 19:00:20
Archive generated by hypermail 2.2.0.