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gbos - a tiny Unix-flavored OS for the Game Boy Color (kernel, shell, coreutils in C, RAM filesystem)
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src
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syscall.asm
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Author
Age
Files
Lines
*
kernel: a real timer source (64 Hz tick IRQ) + uptime(1)
user
8 days
1
-0
/
+19
*
net: SYS_POLLCON + larger console ring for link-injected input
user
8 days
1
-0
/
+1
*
net: pump the network from the console wait (answer pings at the prompt)
user
9 days
1
-31
/
+7
*
kernel: sys_sleep - a cooperative delay off the DIV timer (+ ping pacing)
user
9 days
1
-0
/
+41
*
net: keep network packets out of the console (fixes shell garbage on netboot)
user
9 days
1
-0
/
+23
*
net: proper socket API in the kernel (SYS_NET) - no more SLIP in userland
user
9 days
1
-0
/
+1
*
net: chat client - async receive + OSK send over the link port
user
9 days
1
-0
/
+2
*
net: SLIP framing over the link port + a host gateway (echo round-trip)
user
9 days
1
-0
/
+2
*
kernel+sh: real anonymous pipes (concurrent, streaming, SIGPIPE)
user
9 days
1
-1
/
+19
*
osk: toggle-able on-screen keyboard on the window layer
user
10 days
1
-5
/
+9
*
syscall: mirror console output to the LCD terminal
user
10 days
1
-1
/
+3
*
fs rewrite stage 3: nested directories, paths, cwd (cd/mkdir/ls)
user
10 days
1
-0
/
+3
*
fs rewrite stage 1: persistent block device (bounce buffer, cart SRAM)
user
10 days
1
-0
/
+2
*
jobs: background execution (&), non-blocking reap, spin demo
user
10 days
1
-0
/
+58
*
kill + ps: implement SYS_KILL (pid 1 immortal) and a ps tool
user
10 days
1
-1
/
+167
*
shell: I/O redirection (>/<) and pipes (|); rewrite shell in C
user
10 days
1
-12
/
+134
*
filesystem: a RAM FS (WRAMX) + ls/cat/save/rm; wc/head read files
user
10 days
1
-2
/
+6
*
wip: sys_read + serial console shell (read-store bug under investigation)
user
10 days
1
-1
/
+20
*
kernel: complete the process lifecycle (exit/wait/reap + bank free list)
user
10 days
1
-11
/
+139
*
kernel: implement exec()
user
10 days
1
-1
/
+1
*
kernel: implement fork()
user
10 days
1
-1
/
+1
*
gbos scaffold: working cooperative microkernel (verified ABAB in emulator)
user
10 days
1
-0
/
+117