HP 50g Graphing manual Errors, Format of the error list, Error messages Message Description

Directives change the way MASD interprets your source. Theses directives begin with a ! and will be explained later.

Errors

If MASD detects one or more syntax error, it will push a list describing all errors on the stack. The ER command can help you make sense of that list, point you on the errors and let you correct them.

MASD will report a maximum of 16 errors before stopping compilation.

The ER command takes 2 objects as arguments: The original source code (level 2)

The error list generated by MASD (level 1)

Normally, you should compile using a process similar to: IFERR ASM THEN ER END (this is what the ASM2 command does, by the way). Most people will just type the ASM command followed, if error, by the ER command.

Format of the error list

It’s a list of at most 16 sublists. Each sublist contains 3 systembinary and 1 globalname. The fir st system binary is an error message number. The second is an extra system binary used to indicate how ‘too long’ a jump is. The third one is the position in the source where the error is. The global name is either a NULLNAME if the error was in the main source or the filename of the buggy source.

Error messages

	Message	Description
	Invalid File	The file is not a valid source or macro. (must end with a @)
	Too many	You can not do this operation as you are limited to a certain
		amount of them (for example, you can not have more than 64
		simultaneous skips)
	Unknown Instruction	Unknown instruction
	Invalid Field	Incorrect field
	Val betw 015 expected	An integer between 0 and 15 is expected
	Val betw 116 expected	An integer between 1 and 16 is expected
	Val betw 18 expected	An integer between 1 and 8 is expected
	Label Expected	A label is expected
	Hexa Expected	An hexadecimal number is expected
	Decimal Expected	An decimal number is expected
	Can't find	This object can not be located
	Label already defined	This name is already in use
	{ expected	A { character was expected
	} expected	A } character was expected (this can happen if you do not
		close all the open skips for example)
	( expected	A ( character was expected
	[ or ] expected	A [ or ] character was expected
	Forbidden	This can not be done
	Bad Expression	This expression is invalid
	Jump too long	This jump is above the limit of the instruction (use a different
		type of jump)
	Insuffisant Memory	There is not enough memory to compile
	Matrix Error	You can not do this thing here because you are creating a
		matrix object
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