[Simh] Rainbow100

[Johnny Billquist]

On 2017-07-21 18:08, Timothe Litt wrote:
> The 240 got rid of the Intel uPs for both technical and political
> reasons.  The one T11 had to handle everything, including scan
> interrupts.  This probably explains why it seemed slow - but I didn't
> have to dig into the 240 internals to the same extent as the VT100.

Not really. The VT240 have both a T11 and an 8085. (Not to mention the 
8051 in the keyboard.) I can't really explain why it was so slow, but 
back at the time, people were talking about the interaction between the 
8085 and the T11, and a bad system design, as a reason.

> The 240 and subsequent terminals never went as far in providing the
> ability to add options as the VT100 did.

True. The original VT100 certainly was interesting in that aspect.

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol