SYSC 3006 Computer Organization
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Fragment 1: B Main ExampleString ; start of packed string DCD #0x ; ‘S’=0x53 ‘Y’=0x59 ‘S’=0x53 ‘C’=0x43 DCD #0x DCD #0x ; 1st 00 is the null-terminator, 2nd 00 is just padding to fill the word Main ; R0 = address of the packed string LEA R0, [ ExampleString ] ; R1 = index of the character in the packed string ... test with several values MOV R1, #5 ; the following code puts the indexed character into the least significant byte of R0, ; and clears the remainder of R0 ...
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Fragment 1: B Main ExampleString ; start of packed string DCD #0x ; ‘S’=0x53 ‘Y’=0x59 ‘S’=0x53 ‘C’=0x43 DCD #0x DCD #0x ; 1st 00 is the null-terminator, 2nd 00 is just padding to fill the word Main ; R0 = address of the packed string LEA R0, [ ExampleString ] ; R1 = index of the character in the packed string ... test with several values MOV R1, #5 ; the following code puts the indexed character into the least significant byte of R0, ; and clears the remainder of R0 ...