┌─────────────────────────┐ 05H and 40H (BX=4) write data to PRN │ ASCII Control Codes │ │ ASCII Table │ 3301H notice Ctrl+Break during PRN output │ Epson/IBM Printer Codes │ │ I/O Redirection │ 4407H get output status (check for busy) └─────────────────────────┘ 440aH see if PRN is on a remote server 440cH 45H set retry iteration count 5e02H set network printer setup 5e03H query network printer setup INT 24H Critical Error (get control on printer error) INT 2fH 01xxH Print.Exe spooler services INT 17H BIOS printer services INT 05H Print screen INT 0dH and INT 0fH LPTn IRQ handlers ────────────────────────────────────────────────────────────────────────────── File Handles National Language Support (font downloading) Service Groups