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NSIS plug-in for getting a bit of CPU information. |
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Version 1.2, July 2003. |
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Typed and clicked by Peter Mason, CSIRO DEM MMTG. mailto://peter.mason@csiro.au. |
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The MHz timing was done using code that was pretty much copied from Pavlos |
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Touboulidis' CPUTEST code. |
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The lean exception handler wrapped around the timing code was done using Jeremy |
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Gordon's tutorial on writing lightweight win32 exception handlers in assembler. |
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(His web-page is www.GoDevTool.com.) |
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The CPUID stuff was done using Intel and AMD's manuals on what CPUID means to them. |
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There's only one routine here - tell() - and its output is a string on the NSIS |
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stack. This string always has the same fields in exactly the same place. |
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(It's easier to extract values that way.) It looks like this: |
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INTELP=d AMD=add PPRO=b MMX=d SSE=b SSE2=b 3DNOW=d ARCH=dd LEVEL=dd NCPU=dd MHZ=ddddd RAM=dddd |
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Here, "d" means a decimal digit (0..9), "a" means an alphabetic character (A..Z) and |
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"b" means a boolean digit (0 or 1). |
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ITELP: Values range [0..4]. |
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0: Not a genuine Intel CPU (or a very, VERY old one). |
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1: Pentium or Pentium with MMX. |
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(Check the MMX field if you want to know about the CPU's MMX support.) |
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2: Pentium Pro, II or Celeron. |
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(May or may not have MMX - PPros don't, the others do. Check the MMX field.) |
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3: Pentium III or P3 (old) Xeon. (Always has MMX and SSE.) |
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4: Pentium IV or (new) Xeon. (Always has MMX, SSE and SSE2.) |
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AMD: A bit more complicated... |
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000: Not an authentic AMD CPU (or a very, VERY old one). |
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Kdd: An old K-series. "dd" is either 05 for a K5 or 06 for a K6. |
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(Pentium compatible. K5s have no MMX or 3DNOW. K6s have standard MMX, |
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and later models have basic 3DNOW.) |
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Add: An Athlon or a Duron. "dd" is the model number (goes from 01 to 10). |
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(Pentium II compatible. All of these have extended MMX and extended 3DNOW. |
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None have any SSE.) |
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Odd: An Opteron. "dd" gives the model number. |
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(Pentium IV compatible. This CPU's got everything, it seems.) |
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PPRO: Values range [0..1]. |
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0: Not compatible with the Intel Pentium Pro processor. |
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1: Compatible with the Intel Pentium Pro processor. |
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MMX: Values range [0..2]. |
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0: No MMX support. |
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1: Standard Intel MMX support. |
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2: Standard MMX support plus AMD MMX extensions. |
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SSE: Values range [0..1]. |
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0: No SSE support. |
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1: Supports SSE (Intel's Streaming SIMD extensions, P3-style). |
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SSE2: Values range [0..1]. |
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0: No SSE2 support. |
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1: Supports SSE2 (Intel's Streaming SIMD extensions 2, P4-style). |
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3DNOW: Values range [0..2]. |
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0: No 3DNOW support. |
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1: Standard AMD 3DNOW support. |
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2: Standard AMD 3DNOW support plus AMD 3DNOW extensions. |
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ARCH: Values range [00..10]. |
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00: 32-bit Intel or compatible |
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01: MIPS (did NT 3.5, apparently) |
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02: DEC Alpha. (Yes, DEC. I can't bring myself to call it COMPAQ.) |
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03: PowerPC |
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04: SHX (?) |
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05: ARM (Acorn Risc Machine, I presume. Running Windows?) |
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06: 64-bit Intel. |
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07: 64-bit Alpha |
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08: MSIL (?) |
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09: 64-bit AMD |
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10: 32-bit Intel doing Win64 (?) |
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LEVEL: "Processor level", like what you see in the main processor environment |
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variable. Sort-of useless for Intel architecture. |
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NCPU: The number of processors available. (Affected by that "Hyper" business |
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that the new XEONs can do, I think.) |
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MHZ: The CPU's internal clock speed in MHz (Approx). |
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RAM: The amount of RAM (physical memory) in megabytes (rounded). |
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SIMPLE EXAMPLE |
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Say you have an application BLOG for which you have two builds of the executable |
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BLOG.EXE: BLOG_GEN.EXE compiled for "Processor = Blend" (a general build) and |
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BLOG_PRO.EXE compiled for "Processor = Pentium Pro" (will only work on a Pentium |
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Pro or compatible or better). Now you want to copy the best one out when a user |
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installs BLOG. You could have something like the following in your Install section: |
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cpudesc::tell |
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Pop $0 ;full identification string in $0 |
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StrCpy $1 $0 1, 22 ;pull out one character after PPRO= |
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IntFmt $2 "%u" $1 ; and turn it into a number |
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IntCmpU $2 1 +1 +3 +3 ;Anything not Pentium II / Pro -compatible gets blog_gen |
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File /oname=blog.exe "blog_source_directory\blog_gen.exe" |
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Goto +2 |
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File /oname=blog.exe "blog_source_directory\blog_pro.exe" |
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... the rest of your Install section |
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