Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread drlegendre .
le current >> rating and low ESR. >> >> >> Thanks Ron >> >> >> >> -Original Message- >> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Brent >> Hilpert >> Sent: Sunday, February 7, 2016 4:14 PM >> To: Gener

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread drlegendre .
ery good ripple current > rating and low ESR. > > > Thanks Ron > > > > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Brent > Hilpert > Sent: Sunday, February 7, 2016 4:14 PM > To: General Discussion: On-Topic and Off-Topic

RE: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread Robo58
Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board On 2016-Feb-07, at 6:17 AM, Robo58 wrote: > c). I hand assembled some code to exercise the 6850. I know it has a > software reset and then you set attributes. I tried my buddies echo > prog

RE: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread Kip Koon
ex.php/Kip_Koon > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of drlegendre . > Sent: Sunday, February 07, 2016 6:18 PM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Help with getting an original Altai running

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread drlegendre .
---Original Message- > > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of > drlegendre . > > Sent: Sunday, February 07, 2016 5:39 PM > > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: Re: Help with getting an original Altai running: 8

RE: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread Kip Koon
rg] On Behalf Of drlegendre . > Sent: Sunday, February 07, 2016 5:39 PM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Help with getting an original Altai running: 8080A clock > circuitry and MITS88 2-SIO board > > I'll not pretend to be any sort of Alta

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread drlegendre .
Good point.. and if you have the later PSU with the 95,000uF 12V cap, pay close attention to that guy. FYI, power supplies in the Altair typically work like this: In the chassis, there are two regulated +18 / -18V supplies of 1A each, and an unregulated ~8V supply capable of substantial current. O

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread Eric Smith
On Sun, Feb 7, 2016 at 3:23 PM, Kip Koon wrote: > I also have an original Altair 8800 that has not been powered up since I was > in my late teens or early twenties. I'm 56 now and I was wondering if > anyone has put together a document for successfully restoring Altair > computers specifically an

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread drlegendre .
I'll not pretend to be any sort of Altair expert, but I did manage a fairly involved rebuild / restoration of one, about a year back. Here's a link to the set of documents I collected in the process: https://nerp.net/~legendre/altair/ My machine is restored to what you might call a "freshly built

RE: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread Kip Koon
Hi Guys, I also have an original Altair 8800 that has not been powered up since I was in my late teens or early twenties. I'm 56 now and I was wondering if anyone has put together a document for successfully restoring Altair computers specifically and retro style computers in general. Any help i

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread Brent Hilpert
On 2016-Feb-07, at 6:17 AM, Robo58 wrote: > c). I hand assembled some code to exercise the 6850. I know it has a > software reset and then you set attributes. I tried my buddies echo > program. It looks for a received character and then echo's it. I'm using a > laptop and PuTTy along with an R

Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

2016-02-07 Thread Robo58
Hi Folks, I'm looking for some insights in getting an original Altair running again. My buddy asked for my help getting his Altair running again. He went through and replaced all the electrolytic caps, cleaned up everything and then tried to get the MITS 88 2-SIO board to run a simple echo progr