peer review

1.Repo structure and compilation look good, program produces the correct A–Z output sequence.

2.Kernel code only uses $k0 and $k1, other registers are preserved.

3.Exception handling is correct: syscall is handled, other exceptions go to kernel_loop.

4.Status register is set to 0x0003, and RFE ensures return to user mode with interrupts enabled.

5.Code is well commented and easy to follow.

6.Overall very solid implementation. A small improvement could be to clarify in comments how $a0 and other registers are preserved across syscalls.