Reading The "Write-All" Cards; Verifying Cards - HP 82104A Owner's Handbook Manual

Card Reader Operations 29
Prematurely terminating a session will result in an incomplete
''write-all'' card set. An incomplete ''write-all'' card set cannot be
properly read and will cause all of memory to be cleared and the display
will show MEMORY LOST.
Reading the '""Write-All" Cards
The "'write-all'' card set must be maintained as a complete set because
the HP-41C will successfully read only a completed (wacc]card set. The
cards from different **write-all'' sets cannot be intermixed. When a card
set is read, all conditions existing at the time the was executed are
duplicated, including all of program memory and the contents of all data
storage registers. Because ofthis, the HP-41C system must be configured
(memory modules, printer, etc.) the same as when the [waLi]card set was
written.
Following is the procedure for reading a ''write-all'' card set.
1. Ensure that the HP-41C is not set to PRGM mode.
2. Begin inserting the ''write-all'' card set. The HP-41C will prompt
you for each track with the standard prompt.
RDY kk OF nn
The cards can be inserted in any order. The HP-41C will keep
track of the cards as they are read and will prompt you for the
lowest numbered track not yet read.
3. When the operation is complete, the HP-41C is set to the same
conditions that existed when the was executed.
Interrupting a read session of the ''write-all'' card set will result in the
clearing of all of memory. The HP-41C will display MEMORY LOST.
When there are not enough registers present to read the entire *'write-
all'' card set, none of the ''write-all'' cards will be accepted and the
calculator will show NO ROOM.
Verifying Cards
An important feature of the HP-41C and card reader system is the ability
to verify the contents of all types of your magnetic cards.