HP HP-11C - Indirect Ry Operations

Section 9: The Index Register 135
Example ]
To Execute Keystrokes Display
(Clear display) 0.0000
Recall from R, (the value
stored earlier using
(sTo](1]). (ReUM 12,345.0000
(Clear display) [« 0.0000
Exchange X and | 0.0000
(using the value remain-
ing in [1]from above
examples) Y 12,345.0000
Indirect R| Operations
To Execute Example Displ
Keystrokes Ispiay
(Store 3 in R, as an
address, that is, nnnnn
~3) 3[s70)(1) 3.0000
Indirect storage and
recall of fiusing Rj
(indirectly addressed by
first storing 3in R,
above). 7(\) 2.6458
Bl 2.6458
[« 0.0000
Rel) ()] 2.6458
[« 0.0000
Exchange, indirect, the
0.0000 in the X-register
and the 2.6458 remain-
ing in R3. (The nnnnn
address 3 remainsin R 2.6458
AL=0 0.0000