1. DEBUG command and display mode 2. BREAK set/reset program breakpoints 3. ERROR FORTRAN error codes 4. LABEL label search 5. PROGRAM display program unit parameters 6. SEARCH card or program unit search 7. SYMBOL examine or modify symbol contents 8. TYPE display contents of text file 9. UNIT file connections % _COMMAND MODE_ _DISPLAY MODE_ SYMBOL display all program symbols ^J next card PROGRAM display all program units ^K previous card @symbol display the value of a symbol ^T page forward S)EARCH locate a card or program unit ^R page backward LABEL locate a label ^H current card UNIT report file connections ^^ start of program TYPE display a text file ^E end of program MAP display memory map ^S center display BREAK set breakpoint ^W rewrite display ? display help menu ^P toggle breakpoint CALC RPN calculator ^L next label match PROCEED proceed to breakpoint ^\ toggle subroutine skip F)INISH exit through FORTRAN ^G proceed to cursor Q)UIT exit through DEBUG ^X proceed to breakpoint % _BREAK_ The _BREAK_ command is used to set or clear a breakpoint at a specified card. Its operation is identical to the _Control P_ display mode command. Statements where breakpoints have been set have their card numbers displayed in reduced intensity. >_BREAK 122_ set (or clear) a breakpoint at card number _122_ % _ERROR CODES_ 0 Operator interrupt 79 SELECT CASE match error 213 Disk not validated 64 Insufficient memory 80 Argument list mismatch 214 Disk write protected 65 Numeric overflow 81 FORMAT descriptor error 215 Rename across device 66 Divide by zero 82 Subscript out of range 216 Directory not empty 67 Argument error 83 Illegal function call 218 Device not mounted 68 Stack underflow 85 Illegal substring 219 Seek error 69 Stack overflow 202 Object in use 220 Comment too big 71 Illegal record 203 Object exists 221 Disk full 72 Record overflow 205 Object not found 222 Delete protected 75 Subprogram not found 209 Action not known 223 Write protected 76 FORMAT syntax error 210 Invalid component name 224 Read protected 77 Not open for WRITE 211 Invalid lock 225 Not a DOS disk 78 Not open for READ 212 Object wrong type 226 No disk % _LABEL_ The _LABEL_ command locates a FORTRAN statement label in the source file. The search always starts at the beginning of the file. If the label is found, display mode is entered with the statement containing the label at the top of the display. The _Control L_ display mode command can then be used to locate subsequent occurances of the label in other program units. Using the _LABEL_ command without an argument displays all labels in the source file. % _PROGRAM_ The _PROGRAM_ command is used to display the symbolic names and parameters of the program units contained within the object file. The progam unit's symbolic name, type, number of dummy arguments, and local memory size are reported. In addition, the names and sizes of COMMON blocks and virtual arrays declared in the program unit are displayed. If the _PROGRAM_ command is given with an argument, then only the parameters of the specified program unit are displayed. % _SEARCH_ The _SEARCH_ command is used to locate a card number or program unit in the source file. The command may be abbreviated to _S_. If the specifed card or program unit is located, display mode is entered with the card at the top of the screen. Those _FORTRAN_ statements which do not generate object code will not be displayed since they form no part of the run file and cannot be located. If the search command is entered without an argument the effect is the same as typing an escape. >_S 122_ locate card number _122_ >_S LOOKUP_ locate program unit named _LOOKUP_ % _SYMBOL_ The _SYMBOL_ command is used to display the symbolic names and contents of all variables in the current program unit. The contents of program variables are examined or modified using the _@_ command followed by the symbolic name. Array elements are accessed by adding a subscript enclosed in parentheses. To place a value in a variable an equals sign followed by the value is appended to the name. >_@VAR_ display the contents of _VAR_ >_@VAR(n)_ display the contents of _n_th element of _VAR_ >_@VAR=X_ assign the value _X_ to _VAR_ >_@VAR(n)=X_ assign the value _X_ to the _n_th element of _VAR_ % _TYPE_ The _TYPE_ command is used to list the contents of a text file. Seventeen lines from the text file at a time and then prompt for a carriage return before continuing. Entering an escape forces a direct return to _DEBUG_ command mode leaving the last display intact. The _TYPE_ command allows specifying a range of lines from the text file to be displayed. This option is invoked by entering the starting line number, a dash, and the ending line number after the file specification: >_TYPE filename {start-end}_ % _UNIT_ Files connections are displayed using the _UNIT_ command. The unit number, file specification, access mode, status, record length (if the connection is for direct access), and any error conditions are displayed for all current connections. % _OPERATORS_ _FUNCTIONS_ ** y**x LOG natural log EXP e**x * y*x LOG10 common log ABS absolute value / y/x SQRT square root INT integer portion + y+x SIN sine ASIN arc sine - y-x COS cosine ACOS arc cosine N negate x TAN tangent ATAN arc tangent C clear registers SINH hyperbolic sine MOD remaindering Rn recall Rn to x COSH hyperbolic cosine PI Pi to x Sn store x in Rn TANH hyperbolic tangent E e to X Xn exchange x with Rn M toggle trig mode %