<= R0 preserved
R1 = value before being overwritten
R2 corrupted
This call reads or set the printer ignore character. It may also be written with OS_Byte 6. To unset the ignore character (NoIgnore) you cannot use this call, you need to use OS_Byte 182. The default ignore character is stored in CMOS byte 14, the NoIgnore state in CMOS byte 15 and can be set with *Configure Ignore.
