BSER

Owned by CIMON (Unlicensed)
Jul 07, 2023
2 min read

BSER, BSERP

 

BSER instruction searches the value 1 in the source and saves the lowest bit to D and the highest bit to D+1.

 

S

Source

D

Destination

 

Instruction

Device address

No. of Steps

Flag

M

X

Y

K

L

F

T

C

S

Z

D

@D

Int.

 

Error

Zero

Carry

BSER

BSERP

S

o

o

o

o

o

o

o

o

-

o

o

o

o

3

o

-

-

D

o

-

o

o

o

-

o

o

-

o

o

o

-

 

When enabled, the BSER instruction searches the value 1 and saves the position number of the lowest bit to the D and the highest bit to the D+1.

 

 

  • D :  The lowest bit position(4) is stored in D.

  • D+1 : The highest bit position(15) is stored in D+1.

  • If there is no value 1 in the source, D and D+1 will have 0 value.

  • If There is only 1 bit which has value 1, D and D+1 will have the same value.

 

 

 

Example)

If M01 is ON, the BSER instruction searches value 1 in the source (H1D1C). The lowest bit position 3 is stored in D100 and the highest bit position 13 is stored in D101.