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The PC-SIG Library 10
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The PC-Sig Library - Shareware for the IBM PC and Compatibles (PC-SIG)(Tenth Edition Disks 1-2804)(1991).iso
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DISK2481.ZIP
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SOFT87
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SOFT87.DOC
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1990-10-05
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5KB
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164 lines
INTRODUCTION
----------------------------------------------------------------
SOFT87 is a math coprocessor emulator that emulates floating point
calculations. It is one of the cheapest ways to acquire math
coprocessing capabilities.
SOFT87 is designed for those who do not have an 80x87 (8087,
80287,80387) installed on their computers, but want to
(a) use programs that require an 80x87
(b) write programs with 80x87 instructions
SYSTEM REQUIREMENTS
----------------------------------------------------------------
SOFT87 requires the following hardware & software.
Computer:
IBM 286, 386, 386SX, or compatibles
Memory:
16K of available memory
Operating System:
MS-DOS, PC-DOS, MS Windows or DESQview
RUNNING SOFT87
----------------------------------------------------------------
SOFT87 is a memory resident program. Once loaded into memory,
SOFT87 stays there until you turn off the computer. After loading
SOFT87, the 80x87 instructions can be executed directly even
without an 80287 or 80387 installed in the computer. Then you can
run programs that require an 80287 or 80387, such as AutoCAD R9,
AutoCAD R10, PSpice, PC-MATLAB, ASYST, Auto sketch and PC-SIMNON.
To run these programs with SOFT87, start SOFT87 the appropriate
way a≤ follows:
program start SOFT87
-----------------------------------------------------------------
AutoCAD R9 SOFT87 <enter>
AutoCAD R10
-----------------------------------------------------------------
AutoCAD R10 Pre-release
PC-MATLAB V3.5a
PC-SIMNON V1.0-2.11 SOFT87 S <enter>
PSpice V4.01
-----------------------------------------------------------------
ASYST V2.0-V3.0
PC-MATLAB V3.05
PSpice V3.06 SOFT87 <enter>
Auto sketch V1.01 or
Smalltalk/V R2.0(floating point) SOFT87 S <enter>
Borland's computer language
Microsoft's computer language
-----------------------------------------------------------------
TEST RESULTS
-----------------------------------------------------------------
There are four popular testing programs to test the computer's
configurations and features, such as the existence of 80x87 and
the speed of floating point calculations.
(a) PC tools
(b) Award system speed test ---SST
(c) Power Meter --- PM
(d) QAplus
The results are:
(a) PC tools shows the presence of an 80287 coprocessor.
(b) Award system speed test shows the presence of an 80287
coprocessor, and the speed is 58K WHETSTONES.
(c) Power Meter shows the presence of an 80287, and a speed
of 59.614K WHETSTONES/SEC.
(d) QAplus shows the presence of an 80287, and the speed is
104.9K WHETSTONES/SEC.
COMPARISON
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<A>
-----------------------------------------------------------
| TYPE | Actual Value | Absolute Error |
|---------------------------------------------------------|
| Intel | 2999.9999999999928| 2.4x10 -13 % |
|---------------------------------------------------------|
| SOFT87 | 2999.9999999999946| 1.8x10 -13 % |
-----------------------------------------------------------
Result: SOFT87 Calculations are more precise than the Intel chips
<B>
AutoCAD R10 (Drawing Example: Space Shuttle Columbia)
-----------------------------------------------------------
| Computer | SOFT87(1) | Intel(2) | (1) / (2) |
|---------------------------------------------------------|
|80386/25MHz | 14 sec. | 4 sec. | 3.5 |
-----------------------------------------------------------
Result: SOFT87 creates drawing 3.5 times slower than Intel chips
EXTENDED INSTRUCTIONS
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SOFT87 provides 57 extended indtructions that cannot be found in
other coprocessors. These extended instructions will simplify
program design and shorten programming time.
SHAREWARE
-----------------------------------------------------------------
The shareware version does not include the whole instruction set.
This sample version will only work on TEST UTILITY like PC TOOLS,
QAPlus.
If you are interested using SOFT87 after evaluation, please send
SOFT87 287 Version - $39.00
SOFT87 287,387 combination Version - $69.00
SOFT87 Developer Kit - $49.00
We will deliver your registered version after we received your
payment.
MULTIX, INC.
4203 Beltway Dr., #7
Dallas, TX 75244
Tel: (214)239-4989
Fax: (214)239-6826