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These are the Lecture Slides of Embedded System Design which includes Hardware Design, Elevator Controller, Simple Elevator Controller, Try Capturing, Unit Control, Request Resolver, Sequential Program Model, Partial English Description, System Interface etc. Key important points are: Development Environment , Processor, Programs, Target Processor, Compilers, Cross Compiler, Assemblers, Linkers, Debuggers, Profilers
Typology: Slides
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Development processor Target processor
Instruction Set Simulator For A Simple
Processor
typedef struct { unsigned char first_byte, second_byte; } instruction;
instruction program[1024]; //instruction memory unsigned char memory[256]; //data memory
int run_program(int num_bytes) {
int pc = -1; unsigned char reg[16], fb, sb;
while( ++pc < (num_bytes / 2) ) { fb = program[pc].first_byte; sb = program[pc].second_byte; switch( fb >> 4 ) { case 0: reg[fb & 0x0f] = memory[sb]; break; case 1: memory[sb] = reg[fb & 0x0f]; break; case 2: memory[reg[fb & 0x0f]] = reg[sb >> 4]; break; case 3: reg[fb & 0x0f] = sb; break; case 4: reg[fb & 0x0f] += reg[sb >> 4]; break; case 5: reg[fb & 0x0f] -= reg[sb >> 4]; break; case 6: pc += sb; break; default: return – 1;
return 0; }
int main(int argc, char *argv[]) {
FILE* ifs;
If( argc != 2 || (ifs = fopen(argv[1], “rb”) == NULL ) { return – 1; } if (run_program(fread(ifs,program, sizeof(program)) == 0) { print_memory_contents(); return(0); } else return(-1); }
Verification Phase
Emulator
Development processor
(a) (b)
External tools
Change Full chip simulation to
HCS12 Serial Monitor
