TM 5-6675-321-14
Key
C o n t r o l o r I n d i c a t or
Function
Number Manipulation
Exchange Register
Roll Down
CLEAR X
Interchanges contents of
X and Y-registers.
Rolls down contents of
automatic memory stack
f o r v i e w i n g i n X - r e g i s t er
without loss of data.
When pressed, contents of
X - r e g i s t e r i s s h i f t e d to
T-register, T-register
s h i f t s t o Z - r e g i s t e r , Z -
r e g i s t e r s h i f t s t o Y-
r e g i s t e r , a n d Y - r e g i s t er
advances to X-register
f o r v i e w i n g.
C l e a r s c o n t e n t s o f d i s -
p l a y e d X - r e g i s t e r.
6-8
