Epson PC AX Technical Manual page 245

REV.A
DIAGRAMS AND REFERENCE MATERIALS
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: Error code
=
702 :
: COPROCESSOR INITIALIZE ERROR :
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+-----------------------------------------------------------------+
3) Invalid Operation Mask Check (1)
All exceptional interrupts of the coprocessor are masked, then
operation is performed with an empty register to generate a stack
underflow.
At this time, if the IR (Interrupt Request) bit of the status
word of the coprocessor is "1", the program displays following error
message:
+-----------------------------------------------------------------+
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: Error code
=
703 :
: COP ROCESSOR INVALID OPERATION MASK ERROR :
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+-----------------------------------------------------------------+
4) Invalid Operation Mask Check after Clearing of Exceptional Bits
All exceptional bits are cleared (fclex), then processing
identical to that of Item 3) is performed.
At this time, if the IR bit of the status word of the
coprocessor is "1", the program displays following error message:
+-----------------------------------------------------------------+
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: Error code
=
703 :
: COPROCESSOR INVALID OPERATION MASK ERROR :
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+-----------------------------------------------------------------+
5) ST Field Check
Two items of integer data are loaded (fild) and added (fadd).
At this time, if the ST field value of the status word of the
coprocessor is "6", the program displays following error message:
+-----------------------------------------------------------------+
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: Error code
=
704 :
: COPROCESSOR ST FIELD ERROR :
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+-----------------------------------------------------------------+
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