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Flags used by HP-82182A Time Module
06-25-2017, 06:01 PM (This post was last modified: 06-25-2017 06:04 PM by Dieter.)
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RE: Flags used by HP-82182A Time Module
(06-25-2017 04:35 PM)Thomas Okken Wrote:  Of course there are a few other flags that are also used by peripherals: 12 and 13 by the printer (12 set = double width, 13 set = lowercase) and card reader (14 set = override write protect), but are there any other flags used by peripherals? Is this documented anywhere?

Yes, this additional flags usage is not documented in the HP41 manual, probably because most of the later peripherals were not yet available at the time the calculator was released.

But there is a book by J. S. Dearing with tricks, tips and routines for the 41 series (at least that's what the title of the German PDF version says). The appendix contains a flag overview with the following additional information:

flag#   use
 15     printer mode on printers without mode switch:
 16     Man=00, Norm=01, Trace=10
 17     incomplete data record
 31     Time module: MDY=0, DMY=1
 32     IL-module: AUTOIO=0, MANIO=1
 33     for use with HP-IL development ROM
 34     Extended IO-ROM: ADRON=0, ADROFF=1
 35     for use with 00041-15042 ROM (autostart + cassette duplication)

(06-25-2017 04:35 PM)Thomas Okken Wrote:  I'm specifically interested in whether the Time Module's CLK12/CLK24 and CLKT/CLKTD settings are reflected in any flags.

Sorry, the book doesn't seem to have any information on this.

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RE: Flags used by HP-82182A Time Module - Dieter - 06-25-2017 06:01 PM

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