Mapping Example - Texas Instruments 990 Operation Manual

~5\
_ _ _ _ _ _ _
~
_945255-9701
BIT
DISPLACEMENT
MEMORY \
ADDRESS
~~~O
______
~_4
______ -r8 ______
~C
______ --,
7AO
7A2
MEMORY
II III
(A)133375
Figure 7-2. Mapping Example 1
Mount the Standard Control Infonnation Cassette on LUNa 7.
Command Commentary
. PL
Load PROM programmer software .
.PS,MS287-0,S287 Standard configuration MS287-0, S287.
(Memory configuration initial bit displacement
equals 0.)
.PP,MB,7AO,99F Memory bounds 7AO-99F (PROM bounds
default to 0 and FFF
16) .
. PP,GO Program PROM I. The toggles were defaulted
to program PROM and compare when PROM
programmer was loaded by PL.
Change the PROM.
.PS,MS287-4
. PP,GO
Change the PROM.
Load standard memory configuration MS287-4
with initial bit displacement equal to 4. PROM/ROM
configuration does not change.
Program PROM II .
IV PROMS
7-26
Digital Systems Division