Re: CDC 6600/Cyber 73 Memories - WAS: Harris H800 Computer

2016-04-23 Thread Camiel Vanderhoeven
Now that we're on the subject of 6600's and the like... I have a bit of a puzzle. I have some CDC 7600 modules; these consist of 8 thin PCB's, with metal shielding in between. On the back, there are 8 rows of 16 pins, and on the front there are 8 rows of 6 recessed pins, staggered (I believe for

Re: CDC 6600/Cyber 73 Memories - WAS: Harris H800 Computer

2016-04-21 Thread Paul Koning
> On Apr 21, 2016, at 7:33 PM, Chuck Guzis wrote: > > ... >> Neat. PLATO made extensive use of ECS, swapping per-terminal state >> and programs in and out of ECS for fast interactive service. ECS was >> also where most I/O buffers went, with PPUs doing disk and terminal >>

Re: CDC 6600/Cyber 73 Memories - WAS: Harris H800 Computer

2016-04-21 Thread Paul Koning
> On Apr 21, 2016, at 5:01 PM, Rich Alderson > wrote: > > From: Paul Koning > Sent: Thursday, April 21, 2016 11:48 AM > >> I don't think there are any Cyber 70 (CDC 6000 series) systems still >> running, but there's one in emulation, running PLATO. See

Re: CDC 6600/Cyber 73 Memories - WAS: Harris H800 Computer

2016-04-21 Thread Chuck Guzis
On 04/21/2016 01:36 PM, Paul Koning wrote: > >> On Apr 21, 2016, at 3:55 PM, Chuck Guzis wrote: >> >> ... Ten was a number that figured into various aspects. The clock >> was nomially 10 MHz; > > In serial numbers 1-7 only nominally -- the clock was a ring > oscillator,

RE: CDC 6600/Cyber 73 Memories - WAS: Harris H800 Computer

2016-04-21 Thread Rich Alderson
From: Paul Koning Sent: Thursday, April 21, 2016 11:48 AM > I don't think there are any Cyber 70 (CDC 6000 series) systems still > running, but there's one in emulation, running PLATO. See cyber1.org. > It even has emulated console tubes... I can't speak to Cyber 70 systems, but the 6500 at LCM

Re: CDC 6600/Cyber 73 Memories - WAS: Harris H800 Computer

2016-04-21 Thread Paul Koning
> On Apr 21, 2016, at 3:55 PM, Chuck Guzis wrote: > > ... > Ten was a number that figured into various aspects. The clock was > nomially 10 MHz; In serial numbers 1-7 only nominally -- the clock was a ring oscillator, tuned by tweaking wire lengths. Starting with serial

Re: CDC 6600/Cyber 73 Memories - WAS: Harris H800 Computer

2016-04-21 Thread Chuck Guzis
On 04/21/2016 11:04 AM, Rick Bensene wrote: > I think that you were remembering the console of one of the Control > Data 6000/Cyber-70 series computers that you may have seen somewhere. > This series of Control Data machines were famous for their consoles > with two large, round, green-phosphor

Re: CDC 6600/Cyber 73 Memories - WAS: Harris H800 Computer

2016-04-21 Thread Paul Koning
> On Apr 21, 2016, at 2:04 PM, Rick Bensene wrote: > > ... > The machine was an all-transistor design, based on the CDC 6600 > processor. It was liquid cooled, and had a large cooler unit that sat > with the machine that cooled the coolant (water) and circulated it > through