31 Dec
2005
31 Dec
'05
5:48 p.m.
On 12/31/2005 at 4:25 PM woodelf wrote:
Well the Cyber people called it Deadstart. Other people
called it
ColdStart.
The thing you have to remember about the Cyber deadstart is that the DS
panel was it as far as switches and blinkenlights went on the Cyber. Push
the button under the display and those switches were loaded into PP0. No
way to read them after that; no other switches or lights that would tell
you a darned thing about any of the PP's or the CPU. Definitely the
antithesis of the IBM S/360 operator's panel. If you were modifying the
boot process or trying to figure out why your new deadstart tape didn't
work, it took a 'scope and a bunch of head-scratching. Those 12 words
were barely enough to read in one tape record.
Cheers,
Chuck