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- Newsgroups: comp.sys.atari.st.tech
- Path: sparky!uunet!think.com!spool.mu.edu!umn.edu!csus.edu!netcom.com!kbad
- From: kbad@netcom.com (Ken Badertscher)
- Subject: Re: Falcon '030 BUS: 16 or 32 bit?
- Message-ID: <1992Nov22.102303.2157@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- References: <1992Nov17.050651.18469@rmece49.upr.clu.edu> <H.QHklPxgdMm2@fredrik.atari.no> <1992Nov19.071614.6495@nosc.mil> <1992Nov19.200212.2284@elroy.jpl.nasa.gov>
- Date: Sun, 22 Nov 1992 10:23:03 GMT
- Lines: 18
-
- hyc@hanauma.jpl.nasa.gov (Howard Chu) writes:
-
- |The upper 2 MB of the 16 MB are wasted because the memory-mapped I/O
- |registers live there. [...]
-
- And the system ROM.
-
- |I wonder why they didn't add in a control bit to
- |bank-switch that last 2 meg in. Oh well.
-
- Cost. I advocated bank-switching the extra 2 meg during the later
- stages of the Falcon030 design, but it turned out that it would have
- been tough to do for a reasonable cost. Re-layout of boards, already
- multiplexing bits on the memory controller, etc. etc.
-
- --
- Ken Badertscher I need something...
- kbad@taligent.com, kbad@netcom.com ...I just don't know what it is.
-