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·HEXADECIMAL DUMP
A program for a memory dump
in machine language.
Since no machine language monitor is available
with the FP-200, the PEEK command is used
to check the contents of memory. Still, a memory ..
dump capability is required when reading the
contents of memory or preparing a program in
machine language.
·
This program, written in BASIC, provides a
memory dump capability.
When the program is started, it asks whether or nor a printer is used. If you use
a
pdnt-
_er, press the Y key. If not, press the N key. -
Next, input the starting and ending addresses of the memory area to be dumped, in
hexadecimal. If the ending address is smaller th~n the starting address, the program
prompts for re-input of the appropriate data.
_
. -~-- .. ··.
When a printer is used, the program .continuously outputs
16
bytes of memory contents'•ae,
(hexadecimal) p~r line,togethe,r,withthe, assoc::iated:CQar~le.rccodes ¥1d'che-ck-sum1.on,'
.:_:?the printer· immeofately aftet:'ttif1dd't~ilfare"ioput~!}
.
?
· • _ _ _
. _ _ ·~:J{t;,
when a printer'IsnoCused, theCpfograrri"displays'1Jbyfos·of memory":'Contehl~_(hexa~:
decimal) on four lines, together with the associated character codes. and check-sum
below the last line. Pressing any key on the keyboard causes the next 16 bytes of
memory contents to be displayed. Repeat this operation until all the memory contents
-t:"
up to the specified ending address have beeh displayed.
--
·
.-·
At the end of the dump operation, the program again prompts for input.
Equation for calculating check sum:
j
''when,
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