Text Errata
Home Up Text Errata Overflow EBCDIC Using DEBUG LMC Negative Flag LMC Control Assembler
Updated:
2003-05-04 01:19

Text Errata

The text has some obvious errors.  As I find them, I'll list them here.  See the sidebar for information on the use of the LMC Skip instructions, and the status lights that they test.  (Negative results after a SUBTRACT are also explained therein.)

p.149
The location counter must be incremented after the fetch and before the instruction is executed.  (It must not be incremented after the instruction is executed!)
p.158
The program counter register holds the address of the next instruction to be executed (not the current instruction).
 

Web Author: Ian! D. Allen idallen@idallen.ca      Updated: 2003-05-04 01:19

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