Sharp PG-M20XL Manuale Utente Scaricare il pdf (Pagina 23)

be impossible for hardware reasons! The problem is, that in such a case

on the AT bus two different hardware instances would be fighting for the

same IRQ!

Refer to the technical information about your system for the details you

need!

If you configured COM ports to share a common interrupt and ‘Permit Sha-

re’ is not set to 1, you could use all COM ports but only one at a time.

like (only one at a time)

- open COM n

- use COM n

- close COM n

- open COM n+1

- use COM n+1

- close COM n+1 etc.

but not

- open COM n

- open COM n+1

- use COM n

- use COM n+1

- close COM n

- close COM n+1

The ‘PermitShare’ variable is specific to Windows NT. Windows 95 is diffe-

rent (see below).

COM Board

GB - 16

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Sharp PG-M20XL Manuale Utente Pagina 23