comp-e.com » CE

Calculate Min Max and Average Using Assembly

COMP-E — Thu, 12 Mar 2009 22:41:41 +0000

This assembly program reads in 8, 8-bit numbers and is able to calculate the min, max, and average of those numbers. The code has been optimized for speed, but if compact code is what you want, by all means use a looping structure. I should mention that this program is an introduction to assembly and runs on the 8085 simulator. I will however, be posting Verilog code that effectively creates the Intel 8085 and which, will also accept a precompiled hex file via RS232! That will be in a couple months however (time permitting). For now, enjoy your nice and easy Assembly example.

COMP-E

~ we do it with NAND gates

Digital Design with Pipeline 6 Bit Registers

COMP-E — Thu, 12 Mar 2009 22:33:55 +0000

This SLSL / ‘sudo verilog’ program implements the digital design of a pipeline having multiple registers, an adder, and multiplication architecture. The program can easily be re-implemented in Verilog at your discretion. SLSL is a wonderful language that allows for rapid development of digital designs, which is why many of my programs are done in it. Conceptually, you can code from a block diagram to an HDL with it. Unfortunately SLSL is not available to the public, but it should be quite easy for anyone with a couple Verilog or VHDL programs under their belt to understand. The code can be found here.

COMP-E
~a place where computer engineers can play

Nexys 2 Spartan 3 FPGA Arrives

COMP-E — Sat, 07 Mar 2009 19:40:22 +0000

It took a week to get it from Washington state, but it’s finally here. My gorgeous Nexys 2 board I ordered from Digilent. It uses the Xilinx Spartan 3-e chip and has a lot of nice extra features that the one that Xilinx makes didn’t have. Digilent’s website also has a ton of cool addons for the board which I hope to get when there’s some money to spare. I’m going to start out slow and try and reacquaint myself a bit with verilog. My intent is to make a simple calculator and then perhaps move to converting my SLSL code for the 8085 over to verilog. The Nexys 2 board does come with some cool peripherals such as a ps2 port so I may get sidetracked and see what I can do if I hook up an old ball mouse too it. I’ll try to keep you all posted here so the RSS grabs it, but check the forum for code postings and photos. I’ll try to include links as things crop up.

- COMP-E

Digital Design Implementing 8085

COMP-E — Sat, 07 Mar 2009 19:30:37 +0000

All op codes are not represented / implemented in this design however adding them should be very straight forward. This digital design utilizes a bus in order to achieve high efficiency and throughput. The design is scaled back a bit and uses less registers than the actual 8085. This can be easily modified though. Additional op-codes can also be added. Included in this post is are the .src (source) .fmt (format/debug) files. Note that the ‘cpu’ is reading op codes from memory not a .in file!

Click here for the full post including SLSL code.

- COMP-E

COMP-E Forum

COMP-E — Mon, 16 Feb 2009 23:05:00 +0000

Hey all,

The COMP-E forum is starting to grow as I add and encourage others to add usefull new content. Here is a list and quick link guide to all the current topics on the forum.

Signals & Systems

Digital Design Implementing 8085 in SLSL / Verilog

Digital Design with Pipeline 6 Bit Registers (Add & Mult)

Digital Design with Handshakes and the Use of an Arbiter

C – Example Using Realloc And Pointers

Fun With Pointers == Obfuscated Code

UNIX / LINUX / SOLARIS : Implementing the cat Command in C

C++ Linked List : Hash Table : Template Class

C++ Linked List Utilizing A Hash Table – Includes Makefile

C++ Example :: Find Prime Numbers

OS: C++ Using UNIX Commands fork() execv() execev() pipe()

OS: Crack a UNIX Password Using A Dictionary Attack

Operating Systems: Simulate / Create ‘ thrashing ‘

Operating Systems: Create the UNIX ls Command In C++

Assembly 8085 :: Read In Numbers and Create a Histogram

Assembly 8085 :: Read In Characters and CAPS Letters

Calculate MIN MAX and AVG of 8 Numbers Using Assembly

Building a 2-1 MUX and 4-1 MUX Using NAND Gates

An Introduction To IRC

Tweaking and Cleaning Windows + Some Antivirus Tools

All in all, please add to and enjoy the thuroughness of these posts. Remember… if you are stuck on mars and all you have are nand gates, you’ll be all set, for you can build anything with nand gates

- COMP-E

Another Day, Another COMP-E / Engineering Joke :)

COMP-E — Tue, 27 Jan 2009 14:55:33 +0000

– from engineering edu

Five Surgeons

Five surgeons were taking a coffee break and were discussing their work. The first said, “I think accountants are the easiest to operate on. You open them up and everything inside is numbered.” The second said, “I think librarians are the easiest to operate on. You open them up and everything inside is in alphabetical order.” The Third said, “I like to operate on electricians. You open them up and everything inside is color-coded.” The fourth one said, “I like to operate on lawyers. They’re heartless, spineless, gutless, and their heads and their butts are interchangeable.” Fifth surgeon said, “I like Engineers…they always understand when you have a few parts left over at the end…”

- comp-e