In article <20040801025044.10926.00002773@mb-m02.aol.com>,
mjmahon@aol.com (Michael J. Mahon) wrote:
(Unoptimized
screen I/O that switched to the 6502 on each character compounded
the sluggishness.)
I always thought that was just something inherent in Z-80 computers. I
worked at a place for a while that used Dec Rainbow 100's
<http://www.cedmagic.com/history/dec-rainbow.html> and the screen when
running under the Z-80 mode was incredibly slow. It was like using the
VT-100 part of it at about ~4800bps. The company had these computers
and all they used was the Z-80 side of them, even though they had some
MS-DOS software sitting around that was loads faster. That would do
near instantaneous screen updates.
Greg B.