1.\" Copyright (c) 1980, 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" %sccs.include.redist.roff% 5.\" 6.\" @(#)px.1 6.8 (Berkeley) 08/07/91 7.\" 8.Dd 9.Dt PX 1 10.Os BSD 3 11.Sh NAME 12.Nm \&px 13.Nd Pascal interpreter 14.Sh SYNOPSIS 15.Nm \&px 16.Op Ar obj Op Ar argument ... 17.Sh DESCRIPTION 18.Nm \&Px 19interprets the abstract machine code generated by 20.Xr pi 1 . 21The first argument is the file to be interpreted, and defaults 22to 23.Ar obj ; 24remaining arguments are available to the Pascal program using the 25built-ins 26.Ar argv 27and 28.Ar argc . 29.Nm \&Px 30is also invoked by 31.Nm pix 32when running `load and go'. 33.Pp 34If the program terminates abnormally an error message and a 35control flow backtrace are printed. 36The number of statements executed and total execution time 37are printed after normal termination. 38The 39.Cm p 40option of 41.Nm \&pi 42suppresses all of this except the message indicating the cause 43of abnormal termination. 44.Sh FILES 45.Bl -tag -width pmon.out -compact 46.It Pa obj 47default object file 48.It Pa pmon.out 49profile data file 50.El 51.Sh SEE ALSO 52.Xr pi 1 , 53.Xr pix 1 54.Rs 55.%T "Berkeley Pascal User's Manual" 56.Re 57.Sh DIAGNOSTICS 58Most run-time error messages are self-explanatory. 59Some of the more unusual ones are: 60.Bl -tag -width indent 61.It Reference to an inactive file 62A file other than 63.Ar input 64or 65.Ar output 66was used before a call to 67.Ar reset 68or 69.Ar rewrite . 70.It Statement count limit exceeded 71The limit of 500,000 executed statements 72(which prevents excessive looping or recursion) 73has been exceeded. 74.It Bad data found on integer read 75.It Bad data found on real read 76Usually, non-numeric input was found for a number. 77For reals, Pascal requires digits before and after the decimal 78point so that numbers like `.1' or `21.' evoke the second diagnostic. 79.It panic: Em Some message 80Indicates an internal inconsistency detected in 81.Nm \&px 82probably due to a Pascal system bug. 83.El 84.Sh HISTORY 85The 86.Nm \&Px 87comman appeared in 88.Bx 3.0 . 89.Sh BUGS 90Post-mortem traceback is not limited; 91infinite recursion leads to almost infinite traceback. 92