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10 dayskernel: a real timer source (64 Hz tick IRQ) + uptime(1)user1-0/+7
10 dayskernel: dmesg-style boot spew before init spawnsuser1-0/+1
10 daysrefactor: c/ -> usr/, compiled program blobs out of the source treeuser1-31/+31
10 daysirc: a bitchx/irssi-style IRC clientuser1-0/+7
10 daysnet: DHCP client - lease the IP at boot instead of hardcoding ituser1-0/+7
10 daysnet: UDP sockets in the kernel + a DNS resolver (real hostname lookups)user1-0/+7
11 daysnet: ping - GB-originated ICMP echo (a Game Boy pings the real internet)user1-0/+7
11 daysnet: real IP stack, milestone A - ICMP echo (you can ping a Game Boy)user1-0/+7
11 daysnet: chat client - async receive + OSK send over the link portuser1-0/+7
11 daysnet: wget - real HTTP over the link port via the gatewayuser1-0/+7
11 daysnet: SLIP framing over the link port + a host gateway (echo round-trip)user1-0/+7
11 dayskernel+sh: real anonymous pipes (concurrent, streaming, SIGPIPE)user1-0/+7
11 daysterm/osk: scroll region so the OSK never hides the input lineuser1-0/+7
11 daysfs rewrite stage 3: nested directories, paths, cwd (cd/mkdir/ls)user1-0/+7
12 daysfs rewrite stage 1: persistent block device (bounce buffer, cart SRAM)user1-0/+7
12 daysjobs: background execution (&), non-blocking reap, spin demouser1-0/+7
12 dayskill + ps: implement SYS_KILL (pid 1 immortal) and a ps tooluser1-0/+16
12 daysshell: I/O redirection (>/<) and pipes (|); rewrite shell in Cuser1-140/+41
12 daysfilesystem: a RAM FS (WRAMX) + ls/cat/save/rm; wc/head read filesuser1-0/+21
12 daystools: wc, head, and an argc/argv demo (args) + libc.c helpersuser1-0/+21
12 dayslibc + CLI tools: a small C userlanduser1-3/+68
12 daysC toolchain: run SDCC-compiled C programs as gbos processesuser1-0/+13
12 daysshell working: fix syscall ABI (trap clobbers HL) + documentuser1-1/+5
12 dayswip: sys_read + serial console shell (read-store bug under investigation)user1-13/+153
12 dayskernel: complete the process lifecycle (exit/wait/reap + bank free list)user1-35/+19
12 dayskernel: implement exec()user1-0/+52