Some folks told me what they claimed couple years ago that flash feature
is not supported in 80-column for all Apple II family. I had to restore
what I remember a long time ago. If they try to type "FLASH" in 80-column,
it will show only inverse. I think that they talked about Apple II+. If
not, then they are WRONG.
Apple II+ does not implement 80-column feature unless controller card is
used such as Videx or third party. It never had any feature like flash
supported. Apple //e, Apple //c, and Apple IIgs do support flash feature in
80-column because they have primary and alternative fonts.
The fact is that you type "PR#3", it always turns on alternative font by
default. It is why flash becomes inverse. The only way is to switch from
alternative to primary font by turning off alternative switch. It would be
$C00E or 49166.
Type: "C00E:00 <RETURN>" in assembly prompt or "POKE 49166,0 <RETURN>" in
Applesoft BASIC prompt.
After doing this, you will see flash feature in 80-column.
Bryan Parkoff