English

The Simulation of 6502 Microprocessor

The objective of this thesis is to simulate the 6502 microprocessor using the BASIC-PLUS language software of the PDP-11/34. It will help users run 6502 assembly language by first creating the assembly source program in EDIT mode. The assembler, will convert the assembly program to machine language and the simulator, KO65, will execute the program. This feature will allow users to debug and study their programs. The ASM65 and KO65 software programs are written in BASIC-PLUS language and are compatible, with some modifica- tion, to any computer which has a BASIC interpreter and enough memory space. The interactive time sharing system RSTS/E operating system on PDP-11 model 34 was used for this design. ASM65 and KO65 are software programs written in BASIC- PLUS language and run on a PDP-11/34 computer. The ASM65 is an assembler and KO65 is a simulator. ASM65 allows the user to create the 6502 assembly language source program. The system is equipped with helpful error messages. KO65 simulator will execute the 6502 operation code which is generated by the assembler. The simulator also allows the user to easily debug his program through features such as: tracing, single-stepping, and br

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