RCA 70/46 Reference Manual page 195

Interrupt Action
Notes
• Address error:
Addressing.
Protection.
Data error.
Logical
Instructions
• 1. The leftmost four-bits of any source field byte must be a valid digit,
otherwise a data error interrupt occurs.
2. The rightmost four-bits of any source field byte can be either a digit
or a sign.
3. Multiple field editing is possible by using the field separator code
within the mask pattern.
4. The zones of the expanded source digits can be either EBCDIC or
USASCII, as specified by the mode code. When the mode code specifies
EBCDIC, zone code 1111 is generated. When the mode code specifies
USASCII, the zone code 0101 is generated.
5. The rightmost four bits of any source field byte can be a digit or
sign as follows:
Codes Deflnition
0000
~
1001
Digits
1010,1100,1110,1111 Plus sign
1011,1101 Minus sign
6. Overlapping of fields yields unpredictable results.
7. In testing for Paging Error or Paging Queue interrupt conditions,
the hardware assumes that the number of bytes in the source field
is equal to the number of bytes in the pattern field. If the assumed
source field extends across two pages, of which the second page
has any of the conditions causing Paging Error or Paging Queue
interrupts, but the actual source field number of bytes is short
enough to fit within the first page, a false Paging Error condition
or Paging Queue Interrupt condition occurs.
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