Acorn MASTER Series Руководство по монтажу - Страница 4
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Печатать страницуInstalling the ANFS
H a v i n g f i t t e d t h e E C O N E T m o d u l e , i t i s n e c e s s a r y t o f i t t h e
A d v a n c e d Network Filing System (ANFS) ROM.
1
The ANFS ROM must be inserted into one of three sockets, IC27,37 or
41. It is
possible. If it is not possible to use socket IC27 then one of the
other two sockets may be used, but it will be necessary to change
the position of a link on the main P.C.B (see NOTE 1).
T o
i n s e r t
t h u m b
destination socket. The pin 1 end of the IC (see NOTE 2) should
face to the WEST. If you are unsure of which way round the IC
should be installed, refer to the other ICs on the main PCB which
all face WEST.
Apply firm pressure to the IC, but do not force it. When the
chip is in place it may appear to be slightly raised. Check that
all the pins have entered the socket and that none are bent
either outwards or under the body of the IC.
When the ECONET module P.C.B and the ANFS ROM have been
installed, the re-assembly procedure is the reverse of the dismantling
procedure.
Setting the station number
Before attempting to add a machine to an existing ECONET, the
station number must be set. The network manager should be asked to
carry out this operation.
NOTE 1: Sockets IC37 and 41 share the same address space as four
sideways
d e t e r m i n e w h e t h e r t h e address space is claimed by ROM or sideways
RAM.
These two links are located close to the WEST side of ICs37 and
41 (see fig 1.), LK18 is used with IC41 and LK19 is used with
IC37. These links consist of a three pin plug with a connector
which may be push fitted onto t w o p i n s o f t h e p l u g t o m a k e a
c o n n e c t i o n . T h e r e a r e t w o p o s s i b l e positions for this connector:
EAST - the connector joins the central pin to the right
WEST - the connector joins the central pin to the left
The use of one of the sockets with a ROM will preclude the use of
2K (two 16K pages) of sideways RAM. If both IC37 and IC41 are used
in
conjunction
s i d e w a y s R A M p a g e s w i l l b e unavailable.
If
IC27
sideways RAM, you will need to fit the ANFS ROM into an EPROM
cartridge which can then be plugged into one of the cartridge sockets.
Further information about the use of sideways RAM/ROM may be
obtained from part 1 of the MASTER 128 REFERENCE MANUAL.
recommended
t h e
A N F S
a n d
forefinger,
R A M
p a g e s .
hand pin (enables sideways ROM) or
hand pin (enables sideways RAM)
w i t h
is
already
that
socket
R O M ,
h o l d
t h e
and
line
T h e
p o s i t i o n
s i d e w a y s
R O M s ,
occupied
and
you
IC27
should
e n d s
o f
t h e
up
all
the
pins
o f
l i n k s
L K 1 8
a l l
f o u r
need
all
be
used
where
I C
b e t w e e n
over
the
a n d
L K 1 9
o f
t h e
1 6 K
four
pages
of