A
Al Klein
I have two parallel printers installed, only one will print the BIOS,
a very old Epson LX300.
Int5 (the PrtSc key before Windows grabs it) prints to LPT1.
Most printers nowadays do not accept DOS Printer Codes, including new
parallel printers.
The only "commands" issued by Int5 are carriage return and line feed.
A printer that won't accept them is called "broken".