Updated: Apr 8
I am nearly six months into my 286 project. While I started on breadboards, I am now at a nice stage where I have an ATX form-factor motherboard with a VGA card and sound card. A couple of months ago I posted 80286 System Roadmap (rehsdonline.com). I feel like I have made good progress since that post.
x86 code from above videos: x86/286-related/WorkingCode/20230402 at main · rehsd/x86 (github.com)
Budgetary Bill of Materials
As of April 2023, I am estimating a BOM cost of approximately $240 USD, before shipping, and assuming low purchase volume. This does not include the Arduino Due or OLED debug screen; these would add another $65.
Support for additional BIOS interrupts
Graphical user interface
DMA support (coded, tested)
At some point, get some flavor of DOS running
Protected virtual-address mode
For more posts in my x86 series, see x86 (rehsdonline.com).