Problem Statement
Write a SIC/XE program a program to copy a character string to another char string
Solution
| Line Number | Code | Comments |
| 1 | LDA #5 | |
| 2 | STA ALPHA | |
| 3 | LDA #90 | |
| 4 | STCH C1 | |
| 5 | ALPHA |
System Software – Given the target address generated for the following machine instruction
Question
System Software – Given the target address generated for the following machine instruction
(i) 032600h
(ii) 03C300h
(iii) 0310C303h
if(B)=006000,(PC)=003000, (X)=00090.
Solution
(i)032600=103000
(ii)03C300=00C303
(iii)0310C303=003030…
System Software – SIC/XE Program to Write a subroutine to read a record into a buffer
Problem Statement
Write a subroutine for SIC/XE that will read a record into a buffer. The record may be any length from 1 to 100 bytes. The end of record is marked with a “null” character (ASCII code 00). The …
System Software – SIC/XE Program to write a subroutine for SIC that will read a record into a buffer
Problem Statement
Write a subroutine for SIC that will read a record into a buffer. The record may be any length from 1 to 100 bytes. The end of record is marked with a “null” character (ASCII code 00). The …
System Software – SIC/XE Program to write a subroutine for SIC that writes record on to device 05
Problem Statement
Suppose that RECORD contains a 100-byte record. Write a subroutine for SIC that will write this record on to device 05.
Solution
| Line Number | Code | Comment |
| 1 | JSUB WRREC | |
| 2 | WRREC LDX ZERO | |
| 3 | WLOOP TD |
System Software – SIC/XE Program to find the maximum element in the array and store result in MAX
Problem Statement
Assume that ALPHA is an array of 100 words. Write a sequence of instructions for SIC/XE to find the maximum element in the array and store results in MAX.
Solution
| Line Number | Code | Comment |
| LDS #3 |
System Software – SIC/XE Program to multiply two arrays
Problem Statement
Assume that ALPHA and BETA are the two arrays of 100 words. Another array of GAMMA elements are obtained by multiplying the corresponding ALPHA element by 4 and adding the corresponding BETA elements.
Solution
| Line Number | Code | Comments |
System Software – SIC/XE Program to arrange an array of 100 words in ascending order
Problem Statement
Suppose that ALPHA is an array of 100 words. Write a sequence of instruction for SIC/XE to arrange the 100 words in ascending order and store result in an array BETA of 100 elements.
Solution
| Line Number | Code |
System Software – SIC/XE Program to set 100 elements of the array to 0 using immediate addressing mode
Problem Statement
Assume that ALPHA is an array of 100 words. Write a sequence of instructions for SIC/XE to set all 100 elements of the array to 0. Use immediate addressing and register-to-register instructions to make the process as efficient …
System Software – SIC/XE Program to set ALPHA=GAMMA*BETA-9 using Register Operation
Problem Statement
Write a sequence of instructions for SIC/XE to set ALPHA=GAMMA*BETA-9 using register operation.
Solution
| Line Number(ac) | Code | Description |
| 1 | LDA GAMMA | |
| 2 | MUL BETA | |
| 3 | SUB 9 | |
| 4 | STA ALPHA |