Circle the Correct Answer
Introduction
The report presents four designs that demonstrate some of the input, output, and
programming capabilities of the Motorola 68HC11 microcontroller. These designs made use of
the HC11’s input Port A and output Port B….
As shown in Figure 1, the hardware (consisted / consists / will consist) of the DIP
switches connected to Port A of the HC11 and the hex display connected to Port B. In addition,
the hardware design (included / includes / will include) a serial connection between the HC11
and a personal computer (PC) for downloading the assembled programs into the HC11. To
implement the hardware, we (used / use / will use) the assembly software package (DevHC11)
installed on the PC….
Section 1: Assembling a Program
The first design (called / calls / will call) for writing a program, assembling it, loading it
into the HC11 memory, and then running the program to verify (its / it’s / its’) operation… The
work for this section (was divided / is divided / will be divided) between my partner and (I / me)
in the following way.…
Section 2: Operating in the Standalone Mode
For the second design, the HC11 (was required / is required / will be required) to run in
the standalone mode. In general, operating in the standalone mode (meant / means / will mean)
that…For this particular laboratory, operating in the standalone mode (meant / means / will
mean)…
Procedures for Design
Because there (were / are / will be) no hardware modifications from the first design of the
laboratory, this second design (consisted / consists /will consist) solely of software design….The
program code, shown in Appendix C, (consisted / consists / will consist) of two
subroutines….We had to mask out PA1 so that the pin’s value did not (affect / effect) the
output….
Conclusion
This report (presented / has presented / presents / will present) four designs for the
HC11 microcontroller…
