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Explain the working of two pass assembler with an example Draw the flowchart of two pass assembler also?
Wiki User
∙ 12y ago
Pass One: Read the source code and build the symbol table. Pass Two: Read the source code again and generate the object code. Both passes do pretty much the same things; parsing, tokenizing, processing expressions, etc. The difference is that in pass one you do not know "a priori" what the type, offset, and size of objects are that you have not yet encountered, so you must do the assembly in two passes. You can assemble in one pass if you constrain the coder to define symbols before they are referenced.
Wiki User
∙ 14y ago
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