Hi Jan, i actually don't know for sure which component is preventing it to complete the boot. It was warking fine while accidentally I flipped off the NiCd battery switch. Now if I turn it on nothing appear on the display, I can just regulate the contrast... I tried to blindly write a basic loop to make it beep but it doesn't work. My hope was to have a working unit to use as a reference. I discussed this repair couple of time here in the list and several people provided so many useful informations. Non i know better my M10 but I havent identifyed yet the culprit.
Checking some signals with the oscilloscope it looks like it is looping after a fix time without completing the boot. Francesco Messineo (another user of this list) wrote me in this days to offer some help and he suspect I damaged the RAM. Thank you again Francesco. I bought a desoldering iron and I hope in the next few days I'll find the time to try removing all RAM modules and fit one at a time in the first socket (hoping one module is still alive). Before I'll do this I was wondering if someone have a custom ROM that will test the RAM or other hardware peripherals providing some kind of feedback on a GPIO or something like that. Mauro BTW Francesco has a Youtube channel related to retro computer that worth mention: https://www.youtube.com/iz8dwf Sent from my iPad On 03/dic/2018, at 19:06, Jan Vanden Bossche <jan80...@yahoo.com> wrote: > Mauro, > > What do you need to repair your M-10? > > Greetings from the TyRannoSaurus > Jan-80 > > > From: Mauro Pintus <mau...@tiscali.it> > To: m...@bitchin100.com > Sent: Saturday, 1 December 2018, 16:12 > Subject: Re: [M100] Olivetti M-10's for a new home > > Thank you Jeff, really appreciated. > Now I keep my finger crossed :) > > Have a nice day > > Mauro > > > > On Dec 1, 2018, at 3:59 PM, Jeffrey Birt wrote: > >> Mauro, >> >> You have a need for them, so you should have them if the original person >> does not speak up. Fixing your machine is a better use. I have no specific >> need, just thought it would be neat to have a machine with AZERTY keyboard. >> >> Jeff_Birt >> >> From: M100 <m100-boun...@lists.bitchin100.com> On Behalf Of Mauro Pintus >> Sent: Saturday, December 1, 2018 7:50 AM >> To: m...@bitchin100.com >> Subject: Re: [M100] Olivetti M-10's for a new home >> >> I was soo exited I didn't see the other answer from Jeffrey, I'm sorry... >> Hope we can find an agreement, I'm really interested but I don't want bother >> anyone. >> >> Mauro >> >> >> >> On > > >
