Register parameters
RST 20H, DEFW $27
IN:
A = character to be written
OUT:
Fc = 0 always (error handler is never provoked)
Registers changed after return:
A.BCDEHL/IXIY same
.F....../.... different
Notes
OS_Out may also be used to write screen driver codes by writing them in a series of OS_Out sequences, eg. 1, '2', '+', 'B' to switch on bold typeface.
Related calls
GN_Nln, send newline (CR/LF) to standard output
GN_Soe, write string at extended address to standard output
GN_Sop, write string to standard output, local memory
OS_Bout, write null-terminated string block at (B)HL to standard output
OS_Pout, write embedded null-terminated string at caller (PC) to standard output