Int 2F/AX=7F0Ch

AX = 7F0Ch
DX = new state (00h echo off, 01h echo on)

Return:
AX = status
0000h successful

See Also: AX=7F00h"PRINDIR" - AX=7F0Ah - AX=7F0Bh - AX=7F

Category: Printer Enhancements - Int 2Fh - P