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JOSHUA'S ELECTRONIC PROJECTS
Logicae est imperium
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Joshua McKelvey
Feb 17, 20201 min read
First Implementation: KIRV
The first version of the processor, which I have named KIRV, will be a microprogrammed RV32I implementation. This version will focus on...
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Joshua McKelvey
Feb 1, 20203 min read
Beginning of an Ambitious Computer
I have started working on a new project where I intend to create an entire modern computer from scratch. As this is a rather ambitious...
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Joshua McKelvey
Jul 20, 20181 min read
Computer Architecture Learning Kit #4-Bus Design and Processor Functions
I created the bus pinout for the computer design, then worked on the logistics of how to implement some of the processor functions such...
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Joshua McKelvey
Jul 20, 20181 min read
Computer Architecture Learning Kit #3-Processor and ALU block diagrams
Next, I designed the block diagrams for two of the modules, the processor module (based on an Intel 8080), and a ALU module: (I have...
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Joshua McKelvey
Jul 18, 20181 min read
Computer Architecture Education Kit #2-Initial Design
Here is the initial design that I came up with:
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Joshua McKelvey
Jul 18, 20181 min read
Computer Architecture Education Kit #1-Introduction
In November of last year, I started on a school project where a group had to come up with a product designed to meet a need, and create...
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Joshua McKelvey
Apr 4, 20181 min read
8080 Emulator Status Update
I have been hard at work creating an implementation of the Intel 8080 processor in discrete TTL components, and this is what I have come...
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Joshua McKelvey
Jan 28, 20181 min read
Intel 8080 Hardware Emulator
For a project in school I am creating a hardware emulation of the 8080 processor. Its goal is to have as much internal operation visible...
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Joshua McKelvey
Jan 18, 20181 min read
IBM Terminal Monitor Powers Up!
The monitor powers up and can display things! I had to use 3 power supplies for this project: one for the computer, one for the monitor...
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Joshua McKelvey
Jan 13, 20181 min read
IBM Terminal Monitor Reverse Engineering
I have now started the hopefully not too long process of figuring out as much as I can about this monitor and its cable pin-out. I began...
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Joshua McKelvey
Jan 7, 20181 min read
Starting the Monitor dissasembly
To make this monitor work, I will first need to disassemble it to get at the circuit board. However, getting it open is already the first...
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Joshua McKelvey
Dec 30, 20171 min read
IBM Monochrome Monitor Project
I have recently acquired this IBM monochrome monitor in the hopes of using it on my PC with a Hercules graphics card. This is not the...
343 views0 comments
Joshua McKelvey
Dec 5, 20171 min read
System 1 First Bootup
It works! Well, sort of; it outputs the startup message fine, but then it will not continue past that. Whenever I press space, it shows...
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Joshua McKelvey
Nov 28, 20171 min read
Completed System 1 Breadboard
System 1 is now built! That is not to say that it is complete, but the bare minimum amount of parts to have it be functional have been...
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Joshua McKelvey
Nov 19, 20171 min read
System 1 Breadboarding
I have started breadboarding the computer and it's going well so far: I have also had to fix a couple of mistakes in the schematics so I...
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Joshua McKelvey
Nov 12, 20171 min read
System 1 Schematics
I finished creating the schematics for my Z80 computer so here they are: The computer will start off with a non decoded I/O map to make...
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Joshua McKelvey
Oct 7, 20171 min read
System 1 Changes
I have done some more research on all of the components I will be using and I have come up with some mostly final decisions about the...
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Joshua McKelvey
Sep 5, 20171 min read
System 1 Outline
This is the next major project I will be working on. It will be a Z80 based computer running Microsoft BASIC when it is created with the...
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Joshua McKelvey
Aug 30, 20171 min read
Project Roadmap
In order to stay more organized and to not get off track I have constructed a road map for the projects ahead. I will be doing some of...
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Joshua McKelvey
Jul 25, 20171 min read
New Teletypewriters
I have recently acquired two IBM Wheelwriters to convert into teletypewriters for my projects. One of them especially caught my eye with...
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