Not exactly hexspeak, but the exception code used for FPC exceptions for the Windows Structured Exception Handling is
$E0465043. The
E in the first Byte is for “exception” and the remaining three are the ASCII values for
F,
P and
C And the exception class for POSIX exceptions would be
$0053415031435046 which is
#0'SAP1CPF' or, with the order corrected:
'FPC1PAS'#0.