Skip to main content

Data Input Form

Photo by Marvin Meyer on Unsplash

Continuing the Lab 4, we are going to develop the option 2, data input form. The goal is to prompt the user to enter its name, address, city, province and postal code. Also, letting the user use up, down, left, and right arrows to navigate throughout the fields. After finishing the data input, a summary is presented at the end.

Using the ROM routines, wasn’t too hard to allow users to type data into the character display. Then, I decided to make the filed names with the same width, 14 characters, limiting the input to 40 characters. So, the user is not allowed to type in the first 14 and after 54 characters. When the user presses enter at the last field, the summary is shown. I could display the fixed message, but I couldn’t copy the inserted data. I’m still working on that, and I’ll update this post as soon I figure it out.

It is frustrating for me to spend days in basic problems that could be solved quickly using other languages. Assembly is not captivating me at all. Perhaps, this is a lesson that would make me a better developer. I believe in the SPO course and hope to use upper-level languages soon.

Labels:

Comments

Post a Comment

Popular posts from this blog

Project Stage 2

Photo by  SpaceX  on  Unsplash Hey! Were you curious about the results of profiling AWK ? Me too! Quick recap, what is profiling, and how to do it? Profiling is a technique to map the time execution of each part of the application. We can add instrumentation to the executable, or use interruption sampling to generate that map. Here, I’ll use both. Click here for more details on profiling . For the instrumentation, we have to tell the compiler to add the tools needed to collect the execution data. So, I’ve changed the “makefile” file, CFLAGS variable with “-g -Og -pg” and ran the make command. Then, I just ran the awk the same way I did to benchmark it. Here is the command line: ./awk 'BEGIN {FS = "<|:|=";} {if ($8 == "DDD>") a ++;} END {print "count: " a;}' bmark-data.txt This awk version, instrumented, generates a file gmon.out, which contains all execution data. This is the raw material to create a profile report using gp
Post a Comment
Read more

Assembly?

Photo by  Jonas Svidras  on  Unsplash Last week on my SPO course, I had my first experience writing Assembly code. I won’t lie; it was struggling. For me, Assembly is like the Latin of the codding languages and “carpe diem” wasn’t my first lesson. Hexadecimal, binary and a list of instructions is a must know to guarantee survival. Our instructor introduced us to the 6502 processor: it is an old school chip that was used in many home solutions such as PCs and video games. Internally, it has three general-purpose registers, three special-purpose registers, memory and input and output ports. Fortunately, there are emulators on the internet that helps us to focus on the development, hiding the electronic part from us. http://6502.cdot.systems/ Using the emulator, our first task was to copy, paste and execute a piece of code to change the colour of every pixel in the display matrix. That was easy! The result was a yellow screen. Then we were asked to introduce so
Post a Comment
Read more

Two-digit Numeric Display

Photo by  Nick Hillier  on  Unsplash Hi! I'm continuing my blog about my SPO classes. After a brief introduction in Assembly, we are good to hit Lab3. Our instructor kindly let us choose one project out of five. And of course, we decided to go with the easiest! We had to do a two-digit numeric display where the numbers are incremented or decremented by pressing plus and minus key in the keyboard. Soon the challenges were reviled as we dive into how to code it. Should we treat every digit separated or together? How to print them into the display? After a moment of reflection, we decided to handle the digits independently to facilitate the printing display. Also, we had to add a bit-map representation of the numbers because the 6502 chip doesn’t know any font. In this post, I’ll show you the code with the logic to increment and decrement without displaying anything. You can monitor the address $13 and $14 to make sure that it is working. Let me expla
Post a Comment
Read more