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- Newsgroups: comp.sys.m68k
- Path: sparky!uunet!pipex!bnr.co.uk!bmdhh243!bcars267!bnrgate!corpgate!brtph560!brtph690!scottb
- From: scottb@brtph690.bnr.ca (Scott Brasington P870)
- Subject: 68020 MOVEA vs LEA
- Message-ID: <1992Nov17.190823.1347@brtph560.bnr.ca>
- Sender: news@brtph560.bnr.ca (Usenet News)
- Organization: BNR Inc. RTP, NC
- Distribution: na
- Date: Tue, 17 Nov 1992 19:08:23 GMT
- Lines: 14
-
- The instruction timing section of the motorola 68020
- user's manual seems to indicate that a MOVEA immediate
- is faster than an LEA, and that in one case the LEA.W is
- slower than an LEA.L. Can anybody verify this?
- -best- -cache- -worst-
- MOVEA.W #<data>.w,An 0(0/0/0) 4(0/0/0) 3(0/1/0)
- LEA #<data>.w,An 4(0/0/0) 4(0/0/0) 6(0/2/0)
-
- MOVEA.L #<data>.l,An 0(0/0/0) 6(0/0/0) 5(0/1/0)
- LEA #<data>.l,An 3(0/0/0) 6(0/0/0) 7(0/2/0)
-
- Scott Brasington scottb@bnr.ca
- BNR INC Phone: 919-991-8217
- RTP, NC 27709 Fax: 919-991-8369
-