GMS30004 datasheet(42/158 Pages) HYNIX

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(29) ALEM

Naming :

Accumulator Less Equal Memory

Status :

Carry to status

Format :

Function :

õ M(X,Y)

à 1 (when A õ M(X,Y))

à 0 (when A > M(X,Y))

Data of the accumulator is, through a complemental addition,

subtracted from data in the memory location addressed by the

X and Y-register. Carry data obtained is transferred to the

status. When the status is

Ì1Ì, it indicates that the data of

the accumulator is less than or equal to the data of the

memory word. Neither of those data is not changed.

(30) ALEI

Naming :

Accumulator Less Equal Immediate

Status :

Carry to status

Format :

Function :

õ iST à 1 (when A õ i)

à 0 (when A > i)

Data of the accumulator and the constant are arithmetically

compared.

Data of the accumulator is, through a complemental addition,

subtracted from the constant that exists in 4bit operand. Carry

data obtained is transferred to the status. The status is set

when the accumulator value is less than or equal to the

constant. Data of the accumulator is left unchanged.

(31) MNEZ

Naming :

Memory Not Equal Zero

Status :

Comparison results to status

Format :

Function :

M(X,Y)

ó 0

à 1(when M(X,Y) ó 0)

à 0 (when M(X,Y) = 0)

A memory word is compared with zero.

Data in the memory addressed by the X and Y-register is

logically compared with zero. Comparison data is thransferred

to the status. Unless it is zero, the status is set.

Chapter 3. Instruction

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