Epson PC AX Technical Manual page 246

DIAGRAMS AN» REFERENCE MATERIALS
6) Exceptional Data Comparison Check (1)
HEV.A
The data from the stack underflow status of Item 3) is compared
with"l"(fcom), iftheydo notmatch, theprogramdisplays
following error message:
+-----------------------------------------------------------------+
I I
I I
: Error code
=
705 :
: COPROCESSOR COMP ARISON ERROR :
I I
I I
+-----------------------------------------------------------------+
7) Zero Division Mask Check
All exceptional interrupts of the coprocessor are masked, then
"1" is di vided by "0" to generate a zero di vide 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
I I
: Error code
=
706 :
: COPROCESSOR ZERO DIVIDE MASK ERROR :
I I
I I
+----------------------------------------~------------------------+
8) Exceptional Data Addition Check
The data items from Item 7) that resulted in zero division are
added together.
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
I I
: Error code
=
707 :
: COPROCESSOR ADDITION ERROR :
I I
I I
+-----------------------------------------------------------------+
9) Exceptional Data Subtraction Check
The data items from Item 7) that resulted in zero division are
subtracted from each other.
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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