PMP Mail Archive: Re: PMP> Alert table thoughts

PMP Mail Archive: Re: PMP> Alert table thoughts

Re: PMP> Alert table thoughts

Harry Lewis (harryl@us.ibm.com)
Thu, 3 Apr 1997 08:51:20 -0500

Classification:
Prologue:
Epilogue: Harry Lewis - IBM Printing Systems

In this example...

>Here's a serious example worth considering, using the fictitious printer
>model "Charmin" (as in, well, you know) made by Cheapoid Printers Corp:

> 1. Printer is powered on: "powerUp (503)" alert inserted as the first
> entry in the Alert Table.

> 2. Printer starts processing a print job, drawing paper from tray #1,
> however, that tray is empty: "inputMediaSupplyEmpty (808)" alert
> added to the Alert Table.

> 3. User comes along and pulls out tray #1 to fill it with paper:
> "inputMediaTrayMissing (801)" alert must be added to the Alert Table,
> but...

> THE ALERT TABLE IS FULL !!!

...why doesn't 808 get "managed out" by 801? If the tray is put back in
"full" the final state of the alert table will just be "powerUp". If
the tray is put back in empty, then 801 would get managed out by 808.

I'm not arguing for a 2 entry alert table - I'm just not sure I
believe the alert table needs to be a guaranteed size in order to
be useful.

Harry Lewis.