Table 6-4 Monitor System Calls IFunction 1 System Code (dec) 1 Call ------------1------------ 11 Function Description Read in the keyboard status [ input: bl=ll; int 2~ ;dx has the same assignment as in con_in] output: al = ~ means no character; al I means character available] (Note: The "con-stat" and "con-in" calls should be prepared together. You should first call "con-stat" to check if there is a char- acter available then call a "con-inn to read this character. See ncon-in" above. 12 Reboots the system from the device requested and also restarts the monitor operation, while skipping over the power-up tests [ input:
bl=12; int 2~ ;bh = device number] [bh = ~ = default auto_boot] 1------------ 1 1 [ output: none] 1 13 boot_number Returns the boot-device number [ refer to the power-up test descriptions for device assignment] 1 1 1 1 ___ - 1 [ input: bl=13; int 2~ ] 6-14