Groups > comp.os.msdos.programmer > #360

Re: Opcode frequency process/tools?

From	Terje Mathisen <"terje.mathisen at tmsw.no"@giganews.com>
Subject	Re: Opcode frequency process/tools?
Message-ID	<31vrn8-0ki.ln1@ntp6.tmsw.no> (permalink)
Date	2011-10-29 02:46 +0200
References	<f5d9291d-0bb2-4088-ab58-e8b18dd8cfb9@t8g2000yql.googlegroups.com> <ug2mn8-pe3.ln1@ntp6.tmsw.no> <206cfdd9-ea56-40e8-9f13-1f0b3adc9179@q13g2000vbd.googlegroups.com>
Newsgroups	comp.lang.asm.x86, comp.os.msdos.programmer

Cross-posted to 2 groups.

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Jim Leonard wrote:
> On Oct 26, 2:09 pm, Terje Mathisen<"terje.mathisen at
> tmsw.no"@giganews.com>  wrote:
>>> For the curious, I am doing this research against 16-bit x86 code
>>> centered on performance, such as realtime games from the 1980s and
>>> early 1990s.  I'm writing a benchmark for Pentium and lower machines
>>
>> This sounds like you might stumble on some snippets written by me. :-)
>
> I demand a partial list sir!  Any particular 1980s or early 1990s
> inner loops you're proud of?

A few, unfortunately I don't have the source available for most of the 3 
MB asm I wrote before 1995. :-(

I'm particularly proud of my executable ascii bootstrap code:

2 lines of 64 bytes each, using only the MIME subset (70+ chars) of ascii.

Tolerates several forms of reformatting: Reflow/replace CRLF with zero, 
one or two arbitrary characters, uses the minimum possible amount of 
self-modification (a single 2-byte backwards branch instruction):

ZRYPQIQDYLRQRQRRAQX,2,NPPa,R0Gc,.0Gd,PPu.F2,QX=0+r+E=0=tG0-Ju E=
EE(-(-GNEEEEEEEEEEEEEEEF 5BBEEYQEEEE=DU.COM=======(c)TMathisen95

Terje

-- 
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"

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Thread

Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-26 11:41 -0700
  Re: Opcode frequency process/tools? Terje Mathisen <"terje.mathisen at tmsw.no"@giganews.com> - 2011-10-26 21:09 +0200
    Re: Opcode frequency process/tools? Ross Ridge <rridge@nospicedham.csclub.uwaterloo.ca> - 2011-10-26 15:54 -0400
    Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-28 07:07 -0700
      Re: Opcode frequency process/tools? Terje Mathisen <"terje.mathisen at tmsw.no"@giganews.com> - 2011-10-29 02:46 +0200
        Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-31 07:20 -0700
          Re: Opcode frequency process/tools? Terje Mathisen <"terje.mathisen at tmsw.no"@nospicedham.giganews.com> - 2011-10-31 19:22 +0100
      Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-31 07:41 -0700
        Re: Opcode frequency process/tools? Bogus@Embarq.com (Steve) - 2011-11-01 13:13 +0000
  Re: Opcode frequency process/tools? "Rod Pemberton" <do_not_have@nospicedham.noavailemail.cmm> - 2011-10-26 19:12 -0400
    Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-28 07:11 -0700
   Re: Opcode frequency process/tools?  hopcode <hopcode@nospicedham.nulnulul.de> - 2011-10-27 01:18 +0200
    Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-28 07:13 -0700
  Re: Opcode frequency process/tools? Hugh Aguilar <hughaguilar96@nospicedham.yahoo.com> - 2011-10-26 22:28 -0700
    Re: Opcode frequency process/tools? "Rod Pemberton" <do_not_have@nospicedham.noavailemail.cmm> - 2011-10-27 13:37 -0400
      Re: Opcode frequency process/tools? Hugh Aguilar <hughaguilar96@nospicedham.yahoo.com> - 2011-10-27 22:49 -0700
    Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-28 07:24 -0700
  Re: Opcode frequency process/tools? Phil Carmody <thefatphil_demunged@nospicedham.yahoo.co.uk> - 2011-10-27 14:00 +0300
    Re: Opcode frequency process/tools? "Rod Pemberton" <do_not_have@nospicedham.noavailemail.cmm> - 2011-10-27 13:38 -0400
      Re: Opcode frequency process/tools? Robert Wessel <robertwessel2@nospicedham.yahoo.com> - 2011-10-27 14:51 -0500
        Re: Opcode frequency process/tools? Hugh Aguilar <hughaguilar96@nospicedham.yahoo.com> - 2011-10-27 22:40 -0700

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