Check two registers for equal/not equal on DLX program

DLX provides two instructions for comparing numbers: seq (set if equal) sne (set if not equal). Seq instruction example: Seq result register,compare1 register,compare2 register Result register will be 1 if the registers are equal otherwise 0 Use branch true (bt) or branch false (bf) to compare result register 1: seq r1,r2,r4 ;Checks if r2=r4 2: bt r1,L1 ; if true (Branch true ) Jump...

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Halt Instruction on DLX Program

Halt is a command is equal to Stop or pause . Once executed ,DLX program need to re run again  Formal Description: When this instruction is executed, the processor ceases fetching and executing instructions. A halted processor can only be restarted by some means external to the processor, such as a reset button. Example code. halt ...

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Jump to Subroutine & Jump Return instruction on DLX Program

Jump to Subroutine & Jump Return instruction on DLX Program Example code Jal subroutine name Sub routine Jr r31 to return to main program Example Jump to Subroutine & Jump Return instruction on DLX Program  .start main ;Start program and jump to label main main: jal calculator;jump and link to calculator halt ; halt program after executing calculator...

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Unconditional Jump on DLX Program

Jump Instruction used for skipping some portion of sequential program Jump instruction can be used conditional statements like IF,While,For Example Jump DLX code 1 j End;Jump to label End add r1,r2,r3 ;Skip this command End ;label end jr r31 Example Jump DLX code 2 add r1,r1,r2 j end;Jump to end label sub r1,r0,r1 ;Never gets here... subi r2,r2,2 end addi...

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Subtract two Values in DLX Programming

Subtraction commands on DLX 1: sub r1,r2,r3 ;Subtract Signed integers 2: subi r1,r2,100 ;Subtract Signed integers Immediate 3: subur1,r2,r3 ;Subtract Unsigned integers 4: subui r1,r2,100;Subtract Unsigned integers Immediate Explanation of code for subtracting from 2 registers 1: ; #r1 register=0 2: ; #r2 register=10 3: ; #r3 register=30 4: ; Before execution 5:...

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Adding two Integer values in DLX

Adding two Integers from two Registers Example code: 1: Add r1,r2,r3 ;r1=r2+r3 Explanation of code: 1: #r1 register=0 2: #r2 register=1 3: #r3 register=2 4: //before execution 5: Add r1,r2,r3 ;r1=r2+r3 6: //after execution 7: #r1 register=3 8: #r2 register=1 9: #r3 register=2 Adding a register with immediate value Example code 1: addi r1,r2,100 Explanation...

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Loading and Storing Value to DLX Ram from Registes

DLX Code 1: lw r5,16#100 2: sw 16#200,r5 Explanation DLX Code 1: # Ram 100=0 2: r5 register=8 3: sw 16#100,r5 //Copy r5 resgiter value to memory 100 4: r5 register=8 5: # Ram 100=8 6: lw r5,16#100 //Copy memory into r5 register 7: # Ram 100=8 8: r5 register=8 Tags:Loading Storing DLX registers, Backup DLX Registers,Copy ram to Register on ...

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Running DLX Simulator

1,Command to execute simulator java -jar Dsim.jar 2,DLX Simulator 3,Loading DLX file into DSIM simulator 4,Registers view, DLX Cpu >>Register 5, Ram View, Ram >Viewer 6,Lights view, Lights>Lights 7,Switches view ,Switches >switches Ram,Lights,Switches depends on DSIM.cfg file. Tags:Running DLX Simulator...

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DLS file and DLX file and commands

DLS file is Source file File created by user and Input of Assembler DSAM DLX file is Executable file File created by Assembler if the file assemble. It can be run from DLX simulator >>java -jar dasm.jar  try.dls -a -a Program follows absolute address >>java -jar dasm.jar  try.dls -a -l -l List down the error & assembly of your program >>java -jar Dsim.jar To run simula...

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Assembly and running your program

1,Create new folder ,example: dlx in D ,D:\dlx 2,Copy dasm.jar,dsim.jar,dsim.cfg to dlx folder 3,Create dls program, Ex try.dls 4,Assemble your program using this command java -jar dasm.jar -a try.dls 5,After executing this command,It will create try.dlx on dlx folder 6,Run this dlx file using this command java -jar Dsim.ja...

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Introduction to DLX Machine

DLX Machine architecture DLX machine consists of 32 registers from r0 to r31 r0 always 0 r31 Jr Register r1 to r30 can be used for program DLX machine RAM depends on dsim.cfg file dsim.cfg file contains. dsim new bus dsim.bus.Bus  dsim new cpu dsim.dlxcpu.Dlxcpu dsim connect bus$slot0 cpu$dlxbus dsim new ram dsim.ram.Ram 00000 4000 dsim connect bus$slot2 ram$dlxbus In...

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