You have specified an illegal combination of registers in a inline assembler statement. Please refer to an assembly language guide for more information on addressing modes allowed on the Intel 80x86 family.

program Produce;

  procedure AssemblerExample;
  asm
    mov eax, [ecx + esp * 4]
  end;

begin
end.

The right operand specified in this mov instruction is illegal.

program Solve;

  procedure AssemblerExample;
  asm
    mov eax, [ecx + ebx * 4]
  end;

begin
end.

The addressing mode specified by the right operand of this mov instruction is allowed.