Table 6-4 Monitor System Calls Function System Code (dec) Call Function Description ~l co~in Read in an ascii character from the keyboard console (Note: This routine waits until a character is typed on the keyboard) input: bl-~l; int 2~ ] [dx = ~ = Z8~'S channel ~; dx 1 = Z8~,s channell; dx 2 = Z8~'S channel 2; dx 3 = Z8~'S channel 3; dx = Off = Diag Console (8274)] [ output: al=ascii character ] Write one character to the console ~2 co~out [input: al=ascii character; bl-B2; dx has the same assignment as con_in, int 2~] [ output: none ] ~3 Write a character string to the console [ input:
ds:ax = character array pointer ending with a "B"] [bl-B3; int 2B; dx has the same assignment as con_in] output: none] 6-13