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Using PSoCs for Rapid Prototyping
While working on my 6502 back in 2021, u/Enlightenment777 had suggested I look into Programmable System-on-Chips (PSoCs). It took me...
rehsd
Feb 5, 20231 min read
80286 System Roadmap
Last October (2022), I started my learning journey to develop a 286 system. See Start to an 80286 System. As of this writing, I have a...
rehsd
Jan 25, 20233 min read
VGA Next: 640x480 ISA Card
One of my goals for my 286 system is to run MS-DOS at some point (ideally, 6.22). To get to that stage, I have some heavy lifting to do....
rehsd
Dec 31, 20223 min read
VGA for my 80286
As a follow-up to Brainstorming... Video Card for 286 System, I am now working to get my VGA card working in my 80286 system. Initial...
rehsd
Dec 18, 20223 min read
Transitioning 80286 from Breadboard to PCB
Over the past couple of months, I have been working to build out a breadboard-based 80286 system. See /blog/categories/x86. I plan to...
rehsd
Dec 13, 20222 min read
80286 Build #2 (Intel Basic System Configuration), Part 4
This is part four of my blog posts on my 286 basic system build. At this stage, PS/2 keyboard input, interrupts, and LCD output are...
rehsd
Dec 8, 20221 min read
286, SPI, and a 6522 VIA
I recently added basic SPI support to my 80286 system with the help of a W65C22S Versatile Interface Adapter (VIA). Additional Reading...
rehsd
Nov 24, 20221 min read
Brainstorming... Video Card for 286 System
I am researching options for a video card for my 80286 system. I will update this page as I learn more. Related: VGA Add-in Card for My...
rehsd
Nov 20, 20224 min read
80286 Build #2 (Intel Basic System Configuration), Part 3
This is part three of my blog posts on my 286 basic system build. At this stage, PS/2 keyboard input, interrupts, and LCD output are...
rehsd
Nov 16, 20221 min read
Working on Interrupts
Current Status: RESOLVED I am currently working to get interrupts running on my 286 system. I am starting with a simple low-to-high...
rehsd
Nov 14, 20224 min read
80286 Build #2 (Intel Basic System Configuration), Part 2
Continued from 80286 Build #2 (Intel Basic System Configuration)... Initial PCBs Ordered I ordered a set of PCBs to see if I can get the...
rehsd
Nov 6, 20221 min read
Power Distribution, Clock, & Reset PCB v2
I have completed a PCB that combines my previous power distribution and clock/reset PCBs. So far, I am loving this new card. Schematic...
rehsd
Nov 6, 20221 min read
Too many ICs... and how I track them
I developed a very basic app to track my IC inventory. In this video, I share a little bit about the app and how I use it.
rehsd
Oct 22, 20221 min read
80286 Build #2 (Intel Basic System Configuration)
I am starting plans for build #2 of a '286 breadboard-based system. With this build, I hope to implement the full "basic system...
rehsd
Oct 22, 20222 min read
Driving a 1602 LCD with a 286 Processor!
I have been working on a breadboard-based 80286 system. Recently, I made it to a nice milestone -- I can now drive a 1602 LCD! This is a...
rehsd
Oct 18, 20224 min read
80286 Resources
As I come across resources that I find helpful in my '286 build, I will share them here. If you have suggested additions, please drop me...
rehsd
Oct 16, 20221 min read
Start to an 80286 System
I am spinning up a new project -- a breadboard-based 80286. I have not worked with x86 processors from a design perspective before. The...
rehsd
Oct 10, 20223 min read
Arduino ZIF - Testing C64 PLAs
I designed a simple Arduino shield that has a 40-pin ZIF socket to provide easy access to ICs from the Arduino. I plan to use this as a...
rehsd
Oct 7, 20221 min read
16-bit Processor Build - Initial Assembly (cont.)
Continued from 16-bit Processor Build - Initial Assembly... 4 September, 2022 I have assembled two new PCBs. One PCB covers add,...
rehsd
Sep 4, 20224 min read
Interrupt Support for My 16-bit Processor
I am researching how to best implement interrupt support for my 16-bit processor. I received some nice input in this Reddit discussion...
rehsd
Sep 2, 20222 min read
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