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...
top of page
Search
rehsd
- Dec 31
- 3 min
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....
270 views4 comments
rehsd
- Dec 18, 2022
- 3 min
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...
154 views0 comments
rehsd
- Dec 13, 2022
- 2 min
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...
153 views0 comments
rehsd
- Dec 8, 2022
- 1 min
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...
61 views0 comments
rehsd
- Nov 24, 2022
- 1 min
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...
43 views0 comments
rehsd
- Nov 20, 2022
- 4 min
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...
147 views2 comments
rehsd
- Nov 16, 2022
- 1 min
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...
62 views0 comments
rehsd
- Nov 14, 2022
- 4 min
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...
93 views0 comments
rehsd
- Nov 6, 2022
- 1 min
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...
126 views4 comments
rehsd
- Nov 6, 2022
- 1 min
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...
20 views0 comments
rehsd
- Oct 22, 2022
- 1 min
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.
13 views0 comments
rehsd
- Oct 22, 2022
- 2 min
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...
108 views0 comments
rehsd
- Oct 18, 2022
- 4 min
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...
89 views0 comments
rehsd
- Oct 16, 2022
- 1 min
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...
72 views4 comments
rehsd
- Oct 10, 2022
- 3 min
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...
396 views2 comments
rehsd
- Oct 7, 2022
- 1 min
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...
478 views2 comments
![Commodore [References]](https://static.wixstatic.com/media/66a162_9993eac020cb4c1b9609f0fde79dd362~mv2.jpg/v1/fill/w_940,h_411,fp_0.50_0.50,q_90,enc_auto/66a162_9993eac020cb4c1b9609f0fde79dd362~mv2.jpg)
rehsd
- Sep 12, 2022
- 1 min
Commodore [References]
As I learn my way into Commodore computers, I will post here any resources that I find helpful (recommendations from others, ones I find...
32 views0 comments
rehsd
- Sep 12, 2022
- 2 min
Trying to Repair Some Commodore Computers!
I thought it would be interesting to see if I could repair some Commodore computers. I picked up four VIC-20 and two C64 computers that...
24 views0 comments
rehsd
- Sep 4, 2022
- 4 min
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,...
124 views0 comments
bottom of page