B I N A R Y S E L E C; R A D I A L S E L E C - Siemens 100-8D Technical Manual

Table of Contents

Advertisement

o f f e r s unique o p e r a t i n g f e a t u r e s .
the m a i n p r in t e d c i r c u i t b o a r d , f o r l o w - c o s t c u s t o m e r e n h a n c e m e n t .
W r i t e - P r o t e c t
T h e w r i t e - p r o t e c t f e a t u r e p r o v i d e s a w r i t e - i n h i b i t fu n ct io n w he n a w r i t e - p r o t e c t
flopp y d i s k c a r t r i d g e i s u s e d .
w r i t e - p r o t e c t s l o t is p r e s e n t .
en ab led .
B i n a r y S e l e c t
T h e B i n a r y S e l e c t o p t io n p e r m i t s an y o n e o f up to eig ht d i s k d r i v e s to be s e l e c t e d .
With the o p t io n i n s t a l l e d , S E L E C T l i n e s a r e not d e d i c a t e d but a r e u s e d to c o n t a i n a
b i n a r y s e l e c t co d e.
w h i l e the S E L E C T 1, S E L E C T 2, and S E L E C T 3 l i n e s c o n t a i n a b i n a r y co d e b e t w e e n
0 and 7.
W hen the S E L E C T 0 l i n e is lo w ( t r u e ) , a d e c o d e r in the B i n a r y S e l e c t
o p t io n l o g i c d e c o d e s the s e l e c t c o d e f r o m the c o n t r o l l e r .
Radi al S e l e c t
In the b a s i c c o n f i g u r a t i o n , the d i s k d r i v e d o e s n o t a c c e p t c o m m a n d s f r o m the
c o n t r o l l e r , and d o e s not s u p p ly s t a t u s s i g n a l s to the c o n t r o l l e r , until s e l e c t e d .
The p u r p o s e of t h is o p t io n is to a l l o w c o m m a n d s to be a c c e p t e d and s t a t u s s i g n a l s
to b e s u p p l i e d , e a c h o v e r s e p a r a t e l i n e s , without the d r i v e s e l e c t e d .
s i g n a l s c a n b e o p t i o n a l l y c o n f i g u r e d f o r r a d ia l o p e r a t io n :
S T E P and S T E P IN
HDLD
R E A D Y
INDEX and S E C T O R
When d e d i c a t e d l i n e s a r e p r o v id e d f o r t h e s e s i g n a l s , the d i s k d r i v e n e e d not be
s e l e c t e d b y the c o n t r o l l e r .
the i n t e r f a c e c o n n e c t o r .
S e v e r a l o p t i o n s ha ve c o n n e c t i o n s d e s i g n e d into
The s t o r e d data is p r o t e c t e d o n l y if the c a r t r i d g e
With the s l o t c o v e r e d , all w r i t e f u n c t i o n s a r e
T h e S E L E C T 0 l i n e i s u s e d to e n a b l e / d i s a b l e unit s e l e c t i o n ,
E a c h l i n e m u s t b e a s s i g n e d a s e p a r a t e pin n u m b e r on
S p a r e pins a r e p r o v id e d f o r this p u r p o s e .
(Step C o m m a n d )
(Head Load C o m m a n d )
(R ea d y Status)
(Index and S e c t o r P u l s e s )
1 - 1 0
The f o l l o w i n g

Advertisement

Table of Contents
loading

This manual is also suitable for:

100-8

Table of Contents