![]() The only serious extension is the inclusion of an indirect addressing mode. There are vague areas in the AQA specification and I have had to make choices - such as a 32 bit word size and using ARM instruction encodings. The second is a simulation that implements "only" the instructions that the AQA exam board uses in their examinations. The first is a RISC Simulator with a multi-register CPU and an ARM-like instruction set It is a 16-bit CPU with a much larger instruction set and a stack. The LMC is really not a good model of a modern computer CPU and I have made three versions of something better. I am grateful to Turgut Guneysu for his translation of the help file into Turkish. In the assembly area, add a cancel button and make the buttons more obvious. Prevent backspace (when not editing) doing "browser back". Enjoy.Ĭlose input memory/PC location when lose focus (mouse clicked elsewhere). SELECT a program from the drop down list.Įxecution starts at a medium speed and you can use the > button to speed it up. ![]() Quick start - if you don't want to read all this: Little Man Computer - CPU simulator - help page
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