INT 2F - PRINDIR v9.0 - SET BYTE COUNTER DISPLAY AX = 7F09h DH = new state (00h off, 01h on) Return: AX = status 0000h successful SeeAlso: AX=7F00h"PRINDIR",AX=7F07h"PRINDIR",AX=7F08h,AX=7F0Ah,AX=7F0Ch