1" paper tape buy ?

[Chuck Guzis]

On 26 Feb 2009 at 20:55, Dennis Boone wrote:

>  > > Probably didn't hurt that the PPU was a 12-bit machine...
> 
>  > Or the CPU word was 60 bits.
> 
> But the CPU had no I/O.  The PPUs transferred data out of CM into their
> local memory through the pyramid to write it, or vice versa for reads.

No, but it's generally a CPU program that initiates a punch job. So 
60-bits = 5 columns in column binary, which fits nicely.  I don't 
even remember the name of the CIO overlay that drives the 415.  Thing 
was noisy and prone to trouble so few people used it.  I do remember 
the nice warm feel of a deck of freshly-punched cards, though.

---Chuck