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AST RESEARCH, INC. TECHNICAL BULLETIN #0707 10-10-91
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PREMIUM II 486SX/20 AND LOTUS 123 RELEASE 3.1
SYMPTOM: Unable to input numeric values into the Lotus 3.1 worksheet.
The numeric values appear only as zeros while alphanumeric
values are fine.
PROBLEM: Lotus 3.1 recognizes that the system has a 80486 Processor and
assumes that there is a Math Coprocessor available. This is
true for the 80486DX Intel Chip but not for the 80486SX. When
a Math Coprocessor is present, Lotus passes on the tasks of
numeric calculations to the Math Coprocessor which is not
available in the Premium II 486SX/20 as a standard option.
This can be checked by accessing the Worksheet Status Menu
option which will show the system information such as;
Available memory, Processor type, Math Coprocessor type and
other Lotus configuration information.
SOLUTION: By typing "123 -s" at the Lotus 3.1 prompt the Premium II
486SX/20 system will be recognized as a 80386 system with no
Math Coprocessor, enabling Lotus to handle the numeric
calculations. The "-s" switch instructs Lotus that the
system has a 386 Processor with no Math Coprocessor instead of
a 486 Processor. This will allow the Premium II 486SX/20 to
be able to input numeric data.
Lotus is also aware of this issue and customers can contact
Lotus at (800) 343-5414 and order the Lotus 3.1 update which
resolves this problem. With this update the Lotus program
will no longer assume that the 80486 Processor has a built-in
Math Coprocessor and the "-s" parameter will no longer be
necessary.