HP 50g Graphing Buflen, Bytes, #n1 #m1 #n2 #m2 X1, y1 X2, y2, Access …µBUFLEN Input/Output, Mem

Input/Output:

		Level 2/Argument 1	Level 1/Argument 2	Level 1/Item 1
		{ #n1 #m1 }	{ #n2 #m2 }	→
		(x1, y1)	(x2, y2)	→
See also:	ARC, LINE, TLINE
BUFLEN	Command
Type:
Description:	Buffer Length Command: Returns the number of characters in the calculator’s serial input buffer
	and a single digit indicating whether an error occurred during data reception.

The digit returned is 1 if no framing, UART overrun, or inputbuffer overflow errors occurred during reception, or 0 if one of these errors did occur. (The input buffer holds up to 255 bytes.) When a framing or overrun error occurs, data reception ceases until the error is cleared (which BUFLEN does); therefore, n represents the data received before the error.

Use ERRM to see which error has occurred when BUFLEN returns 0 to level 1.

Access: …µBUFLEN

Input/Output:

Level 1/Argument 1	Level 2/Item 1	Level 1/Item 2
→	nchars	0/1

See also: CLOSEIO, OPENIO, SBRK, SRECV, STIME, XMIT

BYTES

Type: Command

Description: Byte Size Command: Returns the number of bytes and the checksum for the given object. If the argument is a builtin object, then the siz e is 2.5 bytes and the checksum is #0.

If the argument is a global name, then the size represents the name and its contents, while the checksum represents the contents only. The size of the name alone is (3.5 + n), where n is the number of characters in the name.

Access:	!°MEMORY BYTES			( °is the leftshift of the	Nkey).
Input/Output:
		Level 1/Argument 1		Level 2/Item 1	Level 1/Item 2
		obj	→	#nchecksum	xsize
	Objects that
Example:		decompile identically can have different byte sizes and checksums. For instance,
	{1}
	and
	1 'A' STO A {} +
	both produce lists containing the number 1. However, the first list contains the builtin object 1
	(for a size of 7.5 bytes), while the second list contains a RAM copy of 1 (for a size of 15.5 bytes).
See also:	MEM
B→R	Command
Type:

Description: Binary to Real Command: Converts a binary integer to its floatingpoint equivalent.

330 Full Command and Function Reference