RCA Spectra 70 - Page 155

Convert to Decimal
(CVD)
General Description
Format
(RX)
Condition Code
Interrupt
Action
Fixed-Point
Instructions
• The radix of the operand specified by the first address (R
1
)
is converted
from binary to decimal notation and stored at the double-word main
memory area specified by the second address (XdBdD
2
). The operand is
treated as a right-justified signed integer before and after the conversion.
o
7 8 11 12 15 16 19 20
• Unchanged.
• Address error:
Addressing.
Specification.
Protection.
31
Notes • 1. The result is placed in the double-word main memory location in the
packed decimal format of 15 digits plus sign.
2. The low-order
four bits of the result are the sign which is generated
according to the current decimal code, EBCDIC or USASCII.
3. The maximum binary number (32-bit signed integer) that can be
converted is (2,147,483,647) positive and (2,147,483,648) negative.
No overflow can occur.
146