7 Oct
1998
7 Oct
'98
12:55 p.m.
At 11:10 PM 10/7/98 +0100, Tony Duell wrote:
I have this option in my VT55. Alas the special chemical paper has long
since decayed, and I have never managed to get anything out of it, for
all it looks perfect electrically, the rollers turn, there is a suitable
high voltage on the electrodes, etc.
Hmm, this is bringing back memories. The VT55 also had a weird graphic
mode that gave two scan-lines of pixels that could be positioned
vertically, right? This was interesting for drawing line graphs.
I remember accessing these from BASIC on a PDP-11/03 in high
school. I think I tried to write a subroutine library that would
allow me to draw arbitrary lines on the screen by dithering
the pixels of lines that were located in the same columns.
- John