Epson PC AX Technical Manual page 247

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DIAGRAMS AND REFERENCE MATERIALS
+-----------------------------------------------------------------+
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: Error code
=
708 :
: COP ROCESSOR SUBTRACTION ERROR :
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+-----------------------------------------------------------------+
10) Exceptional Data Multiplication Check
The data from Item 7) that resulted in zero division is
multiplied by "0".
At
this time, if the IR (Interrupt Request) bit of the status
word of the coprocessor is "I", the program displays following error
message:
+-----------------------------------------------------------------+
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: Error code
=
709 :
: COPROCESSOR MULTIPLICATION ERROR :
I I
I I
+-----------------------------------------------------------------+
11) Invalid Operation Mask Check (2)
All exceptional interrupts of the coprocessor are masked, then
"0" is di vided by "0" to generate an invalid operation exception.
At
this time, if the IR (Interrupt Request) bit of the status
word of the coprocessor is "1", the program displays following error
message:
+-----------------------------------------------------------------+
I I
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: Error code
=
703 :
: COPROCESSOR INVALID OPERATION MASK ERROR :
I I
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+-----------------------------------------------------------------+
12) Exceptional Data Comparison Check (2)
The data from Item 7) that resulted in zero division is
compared with "0" (fcom), and the program displays an error message
if they do not match:
+-----------------------------------------------------------------+
I I
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: Error code
=
705
I
: COPROCESSOR COMP ARISON ERROR :
I I
I I
+-----------------------------------------------------------------+
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