80286 Build #2 (Intel Basic System Configuration), Part 2

rehsd
Nov 6, 2022
1 min read

Updated: Nov 21, 2022

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 core portion of the system running on a PCB. The PCBs are ~$5.00 USD each. So many traces...

Episode 38 posted as part of Working on Interrupts.

Schematic as of 11 November 2022

Source Code

I have posted my current code, as of 15 November 2022, to my GitHub. See x86/286-related/Code Snapshots at main · rehsd/x86 · GitHub. This includes the Arduino Debugger code, the Windows interface for the debugger, and the assembly code that I have been developing. The latest assembly where I am troubleshooting interrupts is here.

Continued... 80286 Build #2 (Intel Basic System Configuration), Part 3

4 Comments

Unknown member

Nov 15, 2022

Seen your last update with the PIC can you post your code.

rehsd

Nov 15, 2022

Replying to

@bns, I put a copy of the three projects in my GitHub and added details to the post above (bottom of post). Thanks!

Unknown member

Nov 09, 2022

I'm interested if the Arduino mega can keep up when the clock speed is around 8MHz.

rehsd

Nov 09, 2022

Replying to

I'm guessing the serial output would be the first bottleneck. I'll do some testing and see how fast I can run the clock before the Arduino fails to output all data to the serial console. I'm sure it will be under 100 kHz (maybe even 10 kHz) when it begins to have issues.