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Service Hints & Tips

Document ID: GSMH-3FKJHR

IBM PC730/PC750 - SDLC adapters fail

Applicable to: World-Wide

Service Information:
SDLC adapters may fail to function properly or fail to be recognised by the system when installed in an IBM PC 700 Series system.

The Business Audio function of the PC 700 system board is hardwired at I/O address 388-38B. This I/O address may conflict with most SDLC adapters. For example, the IBM Multi-Protocol Adapter (MPCA) defaults to I/O address 380-38F which conflicts with the Business Audio feature. The MPCA adapter can be reset to 3A0-3AF to eliminate the conflict. Change the I/O address (Mode) of the SDLC adapter to an address that does not conflict with I/O address 388-38B or disable the Business Audio feature via the Setup Utility.

Keywords:
PSY2 D/T68XX PSY2ADPT PSVPADPT
D/T6876 D/T6886 D/T6875 D/T6885
68XX 6876 PSY2COMM PSVPCOMM
6886 6875 6885 PSY2PROG
PSY2ERR PSVPERR

Search Keywords

Hint Category

Adapter Cards, Retain

Date Created

26-07-95

Last Updated

27-04-98

Revision Date

24-04-99

Brand

IBM PC

Product Family

PC 730, PC 750

Machine Type

6875, 6876, 6885, 6886

Model

various

TypeModel

Retain Tip (if applicable)

H13419

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