NLZ

NLZ
Description	Normalize (integer to floating)
Format	NLZ <scaling>
Code	151 4008
Affected	(T), (A) and (D)
Type	User
Architecture	{{{Architecture}}}

NLZ is an instruction on the ND platform. It converts the number in the A register to a standard form floating number in the floating point accumulator (A and D registers), using the scaling of the NLZ instruction as a scaling factor.

The scaling is given to the conversion of -128 to 127 (approximately 10^-39 to 10³⁹).

For integers, a scaling factor of +16₁₀ will give a floating point number with the same value as the integer. A larger scaling factor will result in a higher floating point number. Because of the single precision fixed point number, the D register will be cleared.

Example

• NLZ+20 (code 151420) Convert from integer to floating point.

ND-110 48-bit floating point CPU

The ND-110 can have a 48-bit floating point CPU. In the 48-bit floating point CPU a further register (T) and memory location (ea + 2) are used. In this case, the T register is linked to location ea, A to ea + 1 and D to ea + 2.

References

• Norsk Data Document ND–06.014.02 ND-100 REFERENCE MANUAL page 144 and 240
• Norsk Data Document ND–06.029.01 ND-110 Instruction Set page 70 and 72