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From: dale@amiga.UUCP (Dale Luck)
Newsgroups: comp.sys.amiga
Subject: Re: 68881 in a 68010 Amiga (question)
Message-ID: <1611@amiga.amiga.UUCP>
Date: Tue, 18-Nov-86 15:37:16 EST
Article-I.D.: amiga.1611
Posted: Tue Nov 18 15:37:16 1986
Date-Received: Wed, 19-Nov-86 06:24:54 EST
References: <535@elmgate.UUCP> <841@marlin.UUCP>
Reply-To: dale@tooter.UUCP (Dale Luck)
Organization: Commodore-Amiga Inc., 983 University Ave #D, Los Gatos CA 95030
Lines: 18
Keywords: Floating Point FPU 68881 68000 68010 Hardware

In article <841@marlin.UUCP> aburto@marlin.UUCP (Alfred A. Aburto) writes:
>In article <535@elmgate.UUCP> jdg@elmgate.UUCP (Jeff Gortatowsky) writes:
>>
>>Please, no responses about how the 020 uses 'cpu space' etc.  I am familiar
>>with the 020 and it's co-CPU interface.  I just can't see spending 600
>
>I don't know much about the 68010/68881/Amiga interface requirements.
>However if the 68881 must be treated as a peripheral (like a printer or
>serial device) then their are certain procedures to follow (hopefully these
>are stated in the Amiga Hardware Manual) inorder to 'add' the device to the
>system.  Also the AmigaDOS Exec has functions like _LVOAddDevice which may
>be required.  The Amiga hardware device ports and registers are located at
>specific fixed addresses starting (I think) at $00BD0000.  It is in this area
>that you would want the 68881 hardware port and registers to be located.
>

If you use a 68010, there are ways (movec,moves) to access the 68881
completely transparent of the regular addresses of the amiga.