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Re: The Apple ][ was cool!
- Subject: Re: The Apple ][ was cool!
- From: "william strutts" <wrstrutts1@nospam.home.com>
- Date: Thu, 19 Jul 2001 04:50:24 GMT
- Newsgroups: comp.sys.apple2, comp.sys.cbm, comp.sys.sinclair, comp.sys.tandy
- Organization: Excite@Home - The Leader in Broadband http://home.com/faster
- References: <3B511638.E704ED11@usa.net> <6oj57.24435$JN6.5056871@news1.rdc1.mi.home.com> <9j4g0r$2ccs$1@agate.berkeley.edu> <RBj57.24440$JN6.5063798@news1.rdc1.mi.home.com> <9j5ajk$223$1@agate.berkeley.edu>
- Xref: archiver1.google.com comp.sys.apple2:11007 comp.sys.cbm:18615 comp.sys.sinclair:45387 comp.sys.tandy:3499
"Eric J. Korpela" <korpela@ellie.ssl.berkeley.edu> wrote in message
news:9j5ajk$223$1@agate.berkeley.edu...
> In article <RBj57.24440$JN6.5063798@news1.rdc1.mi.home.com>,
> william strutts <wrstrutts1@nospam.home.com> wrote:
> >"Eric J. Korpela" <korpela@ellie.ssl.berkeley.edu> wrote in message
> >news:9j4g0r$2ccs$1@agate.berkeley.edu...
> >> In article <6oj57.24435$JN6.5056871@news1.rdc1.mi.home.com>,
> >> william strutts <wrstrutts1@nospam.home.com> wrote:
> >> >Then the 68000 is a 32 bit computer in your words because it
> >> >is internally 32 bits.
> >>
> >> Sorry, the registers might be 32 bit, but the ALU is 16 bits.
> >>
> >> Eric
> >>
> >
> >The ALU is either two 16 bit ALU's or one 32 bit ALU.
>
> Two 16 bit ALU's do not a 32 bit ALU make unless a 32 bit op
> takes the same time as a 16 bit op.
>
The two 16 bit registers can be used together by the 68000
instruction set to make a 32 bit ALU given the right processor
mode. In other words, it has two 16 bit ALU's or one 32 bit
ALU depending upon the mode of the processor.
--
--
William R. Strutts - wrstrutts1@nospam.home.com - Whatever!
C'est moi! http://www.facelink.com/wrstrutts
Just hacking away...
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