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Index Words
Index words a r e locations in memory (0000, 0001, 0002, 0003) reserved for use a s counters o r
f o r the automatic modification of instructions in the I register when specified by the program.
Unlike GE-235 registers, the index words a r e integral p a r t s of memory and not separate physical
storage devices.
An optional feature adds 31 index groups of 4 locations each, giving a total of
128 index words.
N
Register
Console typewriter
paper tape reader
and punch
GE-235 REGISTER RELATIONSHIPS
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BLOCK DIAGRAM
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