Re: Oracle6 for DOS in OS/2 VDM, anyone?

In article JtA_at_netcom.com, kmajkut_at_netcom.com (Keith Majkut) writes:
>In article <2ttvmg$ev3_at_news.ysu.edu>,
>Brian C. Shensky <ak730_at_yfn.ysu.edu> wrote:
>>
>>I may have asked this before, a while ago, but...
>>
>>Has anybody been able to get Oracle6 for DOS to run in an os/2 VDM?
>>Every time I try to start the database, I get a message
>>
>>Keyboard does not support A20 access.
>>
>>What does this mean? How does this keep me from using the product?
>>WHat is an A20 driver? I appreciate any responses, posted and emailed.
>>
>>Thanks.
>>
>>_brian_
>>
>>--
>>Brian C. Shensky 313-689-0321 voice/fax/data shensky_at_umcc.umich.edu
>>248 Coachman Dr. #3C OS/2 2.1, Oracle RDBMS ak730_at_yfn.ysu.edu (BEST)
>>Troy, MI 48083-4726 Occasional ARS N8FSR daf_at_skye.umd.umich.edu
>>** DOS your operating system fit your needs? I bet it DOSn't. Mine does! **
>
>This won't work, neither will any of the other Oracle DOS protected mode
>DOS tools such as Form3.ReportWriter1/Menu/, etc included with 6.0A.
>Why?-because Oracle requires VCP services, not DPMI. This same problem means
>that you can't run these tools in a Windows DOS box either.
>There is some sort of one time upgrade that you can get from DOS to OS/2, NT
>and maybe netware. You'll have to call.

You asked about A20. A20 refers to the address line 20. This is controlled to implement various memory management schemes. Have a look for references in documentation about memory management and/or dos-extenders.

PS You can often speed up older machines using extended memory by replacing the keyboard with a new one, because of the above.

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Any opinions are mine, not BT's Received on Tue Jun 21 1994 - 18:10:04 CEST