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Prime Proprietar
rating
Instructions
Y
g
Remember
that
under
default
conditions, the ISU-] (top CPU) is the
only ISU that will talk to the VCP.
The
SWITIO+
bit
(#16)
in
the
CONTROL
register
(AP CTRL)
was
created to allow examination of the
Slave's registers after a HALT.
An example of swapping 1/0 mastership
is listed below:
CP>SYSCLR
*** CPU VERIFIED ***
CP>A 4/176400
0000047176400: 000014 000015
000004/176401: 000000 Z
CP>
I/O mastership has now been swapped
to
ISU-2
(Slave).
To
restore
original
ownership,
either
hit Master Clear or reset bit #16 of the
APCTRL register in the following manner:
CP>A_4/176400
0000047176400: 000015 000014
000004/176401: 000000 Z
CP> -
3.9 CHANGING SUPERVISOR TERMINAL BAUD RATE
Master packs from the factory have the supervisor terminal
baud
rate
set at 300 baud.
This speed may not be desirable to the customer. In
order
to
change the baud rate, three BOOT program parameters must be
changed.
These are the B- Register,
X-
Register,
and
KEYS,
which
appear following the PM command as:
OK, PM
SA,EA,P,A,B,X,K=
3011 5103 0 0 1010 76 34006
PB,SB, LB,XB=
64000/0 64000/170012 4000/21400 6/107203
They are defined as:
Word 0. Start address (SA= 3011)
Word 1. End address (EA= 5103)
Word 2. Program counter (PC= 0)
Word 3. A-reg. (A= 0)
Word 4. B-reg. (B= 1010)
Word 5. X-reg. (X= 76)
Word 6. Keys (Keys= 34006)
(All addresses are in octal.)
3
-
27
070-C
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