I spent the first half of the week on the ethics assignment.
This week I got keyboard input and a basic shell working in the emulator, which were my goals from last week. I added the BIOS and DOS calls needed for programs to read typed input and print text. I can now type commands to list files and run HELLO.COM, enter a name, get a greeting, and return to the shell when the program finishes. I also added TYPE to display a file’s contents and made sure file-read errors return to the prompt. These changes are pushed to GitHub.
The full emulator regression passed all 23 profiles and 28 host tests. Focused tests passed 40 service groups, keyboard delivery through the modeled devices, repeated COM launches, exact display of a fragmented 10 KB file, and repeated disk-error recovery. An initial error test exposed lost keys when typing during BIOS disk-error polling; that limitation is documented. Commands and results are recorded in the repository’s dated test records. These results do not establish FPGA operation or compatibility with existing third-party COM programs.
My software work is on track for the interim demo shell/COM checkpoint; custom-CPU and peripheral integration remain dependencies for the hardware demonstration. Next week I plan to add common BIOS screen queries and timer services with guest diagnostics, and prepare small BIOS/disk tests for integration with the team’s CPU and peripherals. I am keeping optional EXE work deferred.