HP HP-67 - Page 234

230 Using the I-Register for Indirect Control
Primary Registers
(@ Address
I e
S —
Ro[ ] 23
Re[ ] 22
R[] ef
R 20
Secondary Registers
[@ Address
Rse 19
Rss 18
Rs7 17
RSS 16
Rss 15
Rss 14
Rs, 13
Rs. 12
R+ 11
Rso 10
(@ Address
S N
R[]
RRL_____]7
N N
R[5
R[4
R 3
R e
R+
ReL__—Jo
By using the calculator manually, you can easily see how (@ and
(@ are used in conjunction with the I-register to address the
different storage registers: