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- From: micro@imada.ou.dk (Klaus Pedersen)
- Subject: Re: 16-bit RAM Access on Falcon ?
- Message-ID: <1992Nov10.180520.2525@imada.ou.dk>
- Sender: news@imada.ou.dk (USENET News System)
- Organization: Dept. of Math. & Computer Science, Odense University, Denmark
- References: <1992Oct28.102522.21044@ugle.unit.no> <1992Nov1.183817.15596@rhrk.uni-kl.de> <1992Nov5.213100.423@prime.mdata.fi> <1992Nov8.132805.1903@rhrk.uni-kl.de>
- Distribution: eunet
- Date: Tue, 10 Nov 1992 18:05:20 GMT
- Lines: 31
-
- peter@rhrk.uni-kl.de (Gunter Bitz) writes:
-
- >>>
- >>>> Is it true that the Falcon030 only has 16 bit RAM Access ?
-
- >I don't know what Qindex does, but I testet the following:
- >A short loop (which fits completely in the processor cache) like that:
-
- >ll:
- > move.w d0,(a0)+
- > dbf d7,ll
- >and another like
- >ll:
- > move.l d0,(a0)+
- > dbf d7,ll
-
- Try with :
-
- move.l #data+3,D0
- and.b #~3,D0
- move.l D0,A0
- ll: move.l d0,(a0)+
- dbra d7,ll
- data:
-
-
- Is it faster when it reads from the memory rather than writing to it?
-
-
- -Klaus
-
-