Hello Mervyn,
There were typing errors in the second listing concerning the init data.
A . instead of a , and another one I don't remember now.
More important, it looks like you set the line spacing twice.
Anyhow, this is what works for my LC-20 Star 9-dot.
I can draw a box that looks like one and there is white space between lines
when printing characters.
init    db 01Bh, 40h            ;Esc@  ->reset printer
        db 01Bh,'S0'            ;EscS0 ->set Superscript
        db 01Bh,'3',0Dh,24h     ;Esc3 13 ->set 13/216" linespace
                                ; and string terminator
Now I'll try to get it to work on the Laser Printer.
Kind regards, Barry
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