mherman@alias.uucp (Michael Herman) (08/24/90)
1. Can Windows 3.0 safely use the math co-processor version of the MS C 5.1 version of the floating point libraries? In some of the first versions of Windows (version 0.989), you could only use the floating point emulator - something about being unable to save and restore the extact state of the co-processor during context switches. What's the current scoop on this? 2. What is the MFLOPS rating of a 387 in, say, a 25M Hz model 70? What is the MIPS rating of a 25M Hz model 70? 3. I haven't seen much discussion here or in the press about the pros and cons of using Windows 3.0 or Presentation Manager. Are they any good books that cover both W3.0 and PM that go into this? I guess I can understand IBM and MS not wanting to position one against the other - perhaps that is why there hasn't been much of this type of discussion. Michael Herman uunet!utcsri!alias!mherman
mherman@alias.UUCP (Michael Herman) (08/24/90)
In the following query, I am asking from a application developer's point of view and not (necessarily) from that of an end user. In article <1990Aug24.033749.18829@alias.uucp> mherman@alias.uucp (Michael Herman) writes: >3. I haven't seen much discussion here or in the press about the > pros and cons of using Windows 3.0 or Presentation Manager. Are > they any good books that cover both W3.0 and PM that go into > this? I guess I can understand IBM and MS not wanting to position > one against the other - perhaps that is why there hasn't been much > of this type of discussion. Michael Herman uunet!utcsri!alias!mherman
larry@csccat.UUCP (Larry Spence) (08/30/90)
In article <1990Aug24.033749.18829@alias.uucp> mherman@alias.uucp (Michael Herman) writes: >1. Can Windows 3.0 safely use the math co-processor version of the > MS C 5.1 version of the floating point libraries? In some of the > first versions of Windows (version 0.989), you could only use the > floating point emulator - something about being unable to save and > restore the extact state of the co-processor during context switches. > > What's the current scoop on this? We provide (on request from registered users) a version of our app that uses in-line 80X87 code (a "coprocessor version") exclusively (i.e., gotta have an 80X87 to run). No problem (using Win 2.X or 3.X and C5.1 libraries). >2. What is the MFLOPS rating of a 387 in, say, a 25M Hz model 70? > What is the MIPS rating of a 25M Hz model 70? Rough estimate from memory: in the range of 0.25-0.4 MFLOPS, around 4-5 MIPS. >3. I haven't seen much discussion here or in the press about the > pros and cons of using Windows 3.0 or Presentation Manager. Are > they any good books that cover both W3.0 and PM that go into > this? I guess I can understand IBM and MS not wanting to position > one against the other - perhaps that is why there hasn't been much > of this type of discussion. No books that I know of. I would be glad to discuss this, but for political reasons, I can't do so publicly. Send me email if you want to go into this in more detail. -- Larry Spence larry@csccat ...{uunet,texsun,cs.utexas.edu,decwrl}!csccat!larry