Jeremy Fitzhardinge wrote:
>The TMS34010 is *slow*. It only has a 16 bit memory data bus, which has
>a max transfer of about 6MB/s at 40MHz. This is because it is a very
>CISCy chip, with a not particularly fast memory interface (partly because
>all addressess are bit addresses, and the hardware is more complex).
>The 34020 is 32bit and probably much faster, but I think it is an
>unnecessary complication. It would make the video inaccessable from
>the cpu (unless you want shared memory, ugh), making it much harder
>to program. Neil almost certainly has his own views on this :-).
>Neither chip would require another rom on the board.
I've been using a TMS34010-based X-terminal. I must agree that it is not
very fast, but it is not as slow as e.g. cheap NCD-terminals (I have no
idea what's inside those). The TMS-based one is kind of middle of the road.
A Sun SLC running X is faster, HP X-terms (pa-based I think) are much much