Radio Shack TRS-80 Model II Reference Manual page 191

Technical Information
ERROR
(function code 39)
This routine displays the message
ERROR
followed by the specified error
code. The message appears at the current cursor position.
Entry Conditions
B
=
Error Code
A
=
39
Exit Conditions
NZ = Error
A
=
Error Code
ERRMSG
Error Message (function code 52)
This routine returns an 80-byte descriptive error message to the specified
buffer area. (See list of Error Codes and Messages.)
Entry Conditions
B
=
Error Code corresponding to message
(HL) =
SO-byte buffer area in user area (above
X'27FF')
A =
52
Exit Conditions
NZ
=
Error
A
=
Error Code
227