SuperBASIC Name Table

The Name Table consists of a set of eight bytes each in the following form.

The first word is a code giving the Type. This is followed by another word which is the offset from the start of the Name List to the associated name, or -1 if there is no associated name, which is the case for an expression and a substring. Finally there is a long word containing a value pointer which can be one of four things.

• Offset into the variables area (vv).
• Pointer to the maths stack (ms).
• SuperBASIC line number held in the high word (ln).
• Absolute address (ab).

When a machine code routine is called the parameters are put into the Name Table. In this case the Type code contains information about the parameters.

Bit 7 is set if the parameter is preceded by # (hash). Bits 4 to 6 contain the Separator type and bits 0 to 3 contain the Type of item.