HP 82718A Expansion Pod

Reference Manual, 82718-90001

Introduction

This expansion pod provides:

Additional memory (32 or 64 kByte)
A built-in modem
Software to support the bar-code reader wand

Note that the pod is intended to be permanently attached to the HP-75.

Installation

On the backside of the pod remove the two rows of three big screws along the left and right side.
On the front lift the left and right plastic cover.
To be able to place the HP-75 onto the pod make sure the battery pack has been removed!
Plug the pod connector into the right expansion port on the front of the HP-75.
Reinstall the plastic covers and screws.

Note: Towards the right end of the pod's back side is a small connector. A red and black wire run from there to the left side of the HP-75 and disappear inside the calculator. I don't know what this is used for.

High-Level Modem Keywords

`AVAIL?`	Checks if data is available from the modem
`CARRIER?`	Checks if there is a carrier
`FRAME?`	Checks if framing error from last MODIN$
`HOOK?`	Checks if the modem is on-hook
`INITIALIZE ":MODM"`	Resets the modem to its default state
`MODEM OFF`	Turns modem off
`MODEM ON`	Turns modem on
`MODIN$`	Reads data from the modem
`MODOUT`	Sends a string to the modem
`PARITY?`	Checks if parity error from last MODIN$
`READY?`	Checks if modem is ready for data

Low-Level Modem Keywords

`A (ANSWER)`	Places the modem in ANSWER mode
`B (BREAK)`	Sends a break
`C (COUNT)`	Sets the ring count
`D (DIAL)`	Dials a sequence of numbers
`E (ECHO)`	Enables and disables command echoing
`F (FORMAT)`	Sets data format (parity) and data length
`G (GIVEBACK)`	Enables and disables data echoing
`H (HANGUP)`	Hangs up modem
`I (INITIALIZE)`	Resets the modem to its default state
`K (KONTROL)`	Sets serial handshake protocol
`L (LONG)`	Specifies long of short echoing of modem responses
`M (MODEM)`	Places the modem in MODEM mode
`N (NEW)`	Specifies new command character
`O (ORIGINATE)`	Places the modem in ORIGINATE mode
`P (PICKUP)`	Takes modem off-hook and places it in VOICE mode
`Q (QUERY)`	Asks the modem for status information
`R (REDIAL)`	Redials last dialed number
`T (TEST)`	Performs the modem self-tests
`U (UNLISTEN)`	Allows sending command characters to modem as if it were data
`V (VOICE)`	Places the modem in VOICE mode
`X (XMIT)`	Dials a number without call progress reporting after dialing
`Z (ZAP)`	Clears modem receive buffer

Electronic Disc Keywords

`ASSIGN #`	Associates file number with specified file on electronic disc and opens the file
`CAT`	Catalogs files and directories on electronic disc
`COPY`	Copies files within electronic disc and between disc, the HP-75, and HP-IL mass storage devices
`CREATE DIR`	Creates a new directory on electronic disc
`DIR IS`	Changes the current directory
`INITIALIZE ":XMEM"`	Resets the electronic disc to its default state
`MAX XMEM`	Returns total amount of memory on electronic disc
`PRINT #`	Writes data to electronic disc file
`PURGE`	Deletes file from electronic disc
`PURGE DIR`	Deletes directory and child files from electronic disc
`READ #`	Reads data from electronic disc file
`REMOVE`	Asks user before purging files
`RENAME`	Changes name and/or location of file on electronic disc
`RESTORE #`	Set specified file pointer to indicated line number
`XCAT$`	Returns catalog of files on electronic disc
`XDIR$`	Returns catalog of current directory on electronic disc
`XMEM`	Returns amount of available memory on electronic disc

Bar Code Keywords

`CDIGIT OFF`	Turns off automatic check digit verification by the decoders
`CDIGIT ON`	Turns on automatic check digit verification by the decoders
`CDV11`	Verifies the check digit for Code 11 labels entered from the keyboard
`CDV39`	Verifies the check digit for Code 39 labels entered from the keyboard
`CODE11$`	Scans a single Code 11 label
`CODE39$`	Scans a single Code 39 label