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Note: To convert from ASCII to unpacked BCD you have to follow the following steps: 1- Load the ASCII code of Decimal digit in AL or AH or BL or BH or CL or CH or DL or DH register 2- AND the contents of Register with OFH, after this step you will have the unpacked BCD digit in one byte 3- Store the contents of register into unpacked array BCD 4- Repeat from step 1 until all ASCII codes have been converted Note: To convert from ASCII to packed BCD you have to follow the following steps: 1- Load the ASCII code of Decimal digit and the adjacent in AX or BX or CX or DX 2- AND the contents of the Register with OFOFH, after this step you will have two unpacked BCD digit each is in 8-bit register. 3- 4- Shift left the contents of high half of register 4-bit positions like this: MOV CL,4 SHL register name,CL Convert the contents of two halves of register into packed BCD By using OR instruction OR low half of register, high half of register In the result you have packed BCD 5- Store the contents of register into packed array 6- Repeat from step 1 until all ASCII codes have been converted 

          Note: To convert from ASCII to unpacked BCD you have to follow the
following steps:
1- Load the ASCII code of Decimal digit in AL or AH or BL or BH or CL or
CH or DL or DH register
2- AND the contents of Register with OFH, after this step you will have
the unpacked BCD digit in one byte
3- Store the contents of register into unpacked array BCD
4- Repeat from step 1 until all ASCII codes have been converted
Note: To convert from ASCII to packed BCD you have to follow the following
steps:
1-
Load the ASCII code of Decimal digit and the adjacent in AX or BX
or CX or DX
2-
AND the contents of the Register with OFOFH, after this step you
will have two unpacked BCD digit each is in 8-bit register.
3-
4-
Shift left the contents of high half of register 4-bit positions like
this:
MOV CL,4
SHL register name,CL
Convert the contents of two halves of register into packed BCD
By using OR instruction
OR low half of register, high half of register
In the result you have packed BCD
5-
Store the contents of register into packed array
6- Repeat from step 1 until all ASCII codes have been converted
Show more…
Note: To convert from ASCII to unpacked BCD you have to follow the following steps: 1- Load the ASCII code of Decimal digit in AL or AH or BL or BH or CL or CH or DL or DH register 2- AND the contents of Register with OFH, after this step you will have the unpacked BCD digit in one byte 3- Store the contents of register into unpacked array BCD 4- Repeat from step 1 until all ASCII codes have been converted Note: To convert from ASCII to packed BCD you have to follow the following steps: 1- Load the ASCII code of Decimal digit and the adjacent in AX or BX or CX or DX 2- AND the contents of the Register with OFOFH, after this step you will have two unpacked BCD digit each is in 8-bit register. 3- 4- Shift left the contents of high half of register 4-bit positions like this: MOV CL,4 SHL register name,CL Convert the contents of two halves of register into packed BCD By using OR instruction OR low half of register, high half of register In the result you have packed BCD 5- Store the contents of register into packed array 6- Repeat from step 1 until all ASCII codes have been converted

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Computer Science and Information Technology
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Trishna Knowledge Systems 2018 Edition
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To convert from ASCII to unpacked BCD, you have to follow the following steps: 1- Load the ASCII code of the decimal digit in AL, AH, BL, BH, CL, CH, DL, or DH register. 2- AND the contents of the register with 0FH. After this step, you will have the unpacked BCD digit in one byte. 3- Store the contents of the register into the unpacked BCD array. 4- Repeat from step 1 until all ASCII codes have been converted. To convert from ASCII to packed BCD, you have to follow the following steps: 1- Load the ASCII code of the decimal digit and the adjacent digit in AX, BX, CX, or DX. 2- AND the contents of the register with 0F0FH. After this step, you will have two unpacked BCD digits, each in an 8-bit register. 3- Shift left the contents of the high half of the register 4-bit positions like this: MOV CL, 4 SHL register name, CL. 4- Convert the contents of the two halves of the register into packed BCD by using the OR instruction: OR low half of register, high half of register. In the result, you will have packed BCD. 5- Store the contents of the register into the packed BCD array. 6- Repeat from step 1 until all ASCII codes have been converted.
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00:01 From the question we can write the remainders at each step will give us the bcd representation...
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