Load and go-One pass assembler | System Software - #11
In this video, Load and go, a variant of one pass assembler is discussed.
The challenge for one pass assembler is to deal with forward references.
Forward reference means a label appearing after the instruction in which the same label exist as an operand. To deal with forward references, a list of references is being created against the label in symbol table.
Advantages:
1. Avoids the overhead of scanning more than once and creating an object file
2. Loads the object code in memory for immediate execution