usr: ntpdate + date - the Game Boy knows what day it isHEADmaster

An MBC5 cart has no RTC, so SNTP is the only route to a wall clock. ntpdate
does one 48-byte UDP exchange on port 123 and hands the stamp to the kernel;
SYS_SETTIME keeps it with the tick it arrived at, and SYS_GETTIME adds the
elapsed ticks back, so date(1) is just formatting.

    /# ntpdate
    ntpdate: clock set from pool.ntp.org
    /# date
    Sep 24 21:01:23 UTC 2026        (host said 21:01:26)

The clock does not survive a power cycle - which is exactly what /rc is for:
`ntpdate` there and the machine boots knowing the time.

All of it is bounded subtraction, no long division or shifts: SDCC pulls those
from sm83.lib, whose modules link into the $A000 RAM window. The month tables
are string literals for the same family of reason - an initialized array goes
to _INITIALIZED at $A000 and the image overflows its bank ("buffer too small"
out of makebin), which is how this first failed to link.

1 files changed, 15 insertions, 0 deletions

diff --git a/sl0ppty.layout.kdl b/sl0ppty.layout.kdl
new file mode 100644
index 0000000..f767add
--- /dev/null
+++ b/sl0ppty.layout.kdl
@@ -0,0 +1,15 @@
+// What this project needs open, written by `save-workspace`.
+// Checked by `sl0ppty --check`; opened by `open-workspace`.
+layout {
+    tab name="gbos" split="cols" {
+        pane weight=2600 split="rows" {
+            pane weight=1000 cwd="." command="omp -c" purpose="agent:main" suspended=true focus=true
+            pane weight=410 cwd="." purpose="shell:gbos"
+        }
+        pane weight=2200 split="rows" {
+            pane weight=3000 cwd="." command="~/dev/gbc/build/sl0pboy --kitty 3 --kitty-b64 --sock /tmp/sl0pboy.sock gbos.gb" purpose="service:emu" suspended=true
+            pane weight=1000 cwd="." command="make" purpose="task:build" suspended=true
+            pane weight=800 cwd="." command="sudo tools/gbhub --daemon" purpose="service:gbhub" suspended=true
+        }
+    }
+}