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Each
section of the address space. The last 8K section is
further divided into 1K sections by the switches in
S2:
For addresses 0000H through DFFFH, each 8K section is
controlled
switching scheme described in Section 3.2. In order
for
corresponding
corresponding section of the address space must be
turned on by the bank switching logic.
The last 8K section, E000H through FFFFH, can either
be
controlled
sections, or it can be controlled by S2. If it is
controlled by S1, then all of the S2 switches must be
turned off. If it is controlled by S2, switch E of S1
must be turned off.
If the last 8K section is controlled by S2, individual
2K sections of the address space can be selected by
setting the corresponding pair of switches as shown in
Table 3-2. The switch pair can cause the 2K section to
be always on, always off, or to be switched on when
the bank is switched on. This arrangement allows a 2K
memory section to be disabled to allow space for the
Disk
Horizon system.
HRAM
of
the
switches
by
the
any
of
these
Sl
as
Controller
and
in
S1
corresponds
switches
in
8K
sections
switch
must
described
for
Floating
Point
USER/TECHNICAL MANUAL
to
one
S1
and
the
to
be
active,
be
on,
and
the
other
board
in
8K
bank
the
the
seven
the
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