Originally posted by: aronov@csd2.UUCP (Boris Aronov)
Date: Thu, 21-Feb-85 12:41:00 EST
Posted: Thu Feb 21 12:41:00 1985
Date-Received: Tue, 26-Feb-85 05:39:29 EST
Organization: New York University
I have a Microline 92 and use it with Cardco/G+. It prints OK all non-graphics (standard ASCII).
All PET graphics is printed in a weird way: the printhead scans
back and forth over the character to be printed a couple of times.
This repeats for EACH graphics character.
I suspect that G+ tries to emulate Commodore graphics including
the 8x8 dot format. For this it sometimes has to
print in two (or more) passes. It does a CR and a dot-addressed TAB before each pass.
Because of shortest-pass seeking of the printer the head only moves about 1/2" to each side.
(Note: Okidata M92 does NOT have 8-bit graphics, only 7-bit. Hence multiple passes. It also uses (I suspect)
enhanced/emphasized mode to get denser, more readable graphics characters.
Epson probably does multiple density graphics, hense multiple passes.)
Cure -- Unknown to me. I prefer (when programming myself & using packaged programs)
to declare that I have an ASCII printer and do everything in
(Obvious disadvantage -- I don't use the "G" in G+ -- it behaves
as a dumb interface)
P.S. Okidata (whatever is the number) color graphics printer
supposedly directly compatible with Commodore is said to print the same way.
( I cannot guarantee that, for it might just be doing a pass for each color ).