Dspeek; Dspoke; Pspeek - HP E1313A Manual

374 Register-Based Programming
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as follows: The first reading is taken with autoranging, and subsequent
readings are taken on the same range as the first.
address
DSPEEK? < > <
Reads a 16-bit word from the control processor's Data Space RAM and
returns it in the Query Response Register. Addressing is based on the
Control Processor's memory map, and thus depends on how the data page
bits (BD0-BD3) are set. Values of
inclusive, specify which page to read. If a value of FFFF
data_page , the current page is read. The value of
< >
irrelevant for addresses below 8000
have different contents when read via A24 access. This is because the
control processor's internal RAM and registers are not available via A24.
address
DSPOKE < > <
Writes the 16-bit word specified in
Space RAM. Many Control Processor registers are mapped into low RAM.
Use this command carefully! The
parameters have the same meanings as for the
address
PSPEEK? < > <
Reads a 16-bit word from the control processor's Program Space memory.
Since the subsystem uses paging when accessing the Program Space, the
code_page and table_page
< > <
table_page are 0, 1, or FFFF
< >
page" . The value of table_page
<
Valid values for code_page
<
code_page matters only for the address range 4000
< >
general, the

PSPEEK?

command reads flash memory, but for the address
range 2000 through 23FF
16
mapped to Program Space. A24 accesses can be used to view this region,
however.
data_page
>
data_page between 0 and 15
< >
<
. Some low addresses may appear to
16
data_page data
> < >
< data > to the Control Processor's Data
address , and
< > <

DSPEEK?

code_page table_page
> <
parameters are necessary. Valid values of
>
with the latter specifying " use current
16
is irrelevant for addresses below 8000
>
are 0, 1, 2, 3, or FFFF
>
16
, it " usually" reads control processor RAM
16
2040
16
is specified for
16
data_page is
>
2080
16
data_page
>
command.
> 2100
16
.
16
. The value of
through 7FFF . In
16 16
Appendix D