refactor: c/ -> usr/, compiled program blobs out of the source tree

Userland sources live in usr/ (fits the Unix theme better than 'c').
SDCC output .bin blobs land in build/usr/ with the other build artifacts
instead of littering the source dir; programs.asm INCBINs them from there.
Byte-identical ROM.

1 files changed, 0 insertions, 13 deletions

diff --git a/c/necho.c b/c/necho.c
deleted file mode 100644
index 99551d4..0000000
--- a/c/necho.c
+++ /dev/null
@@ -1,13 +0,0 @@
-#include "netlib.h"
-/* necho: send a SLIP-framed packet over the link port and print the reply.
-   Talks to a host gateway (tools/gateway.py) that echoes frames back. */
-
-void main(void) {
-    char buf[64];
-    unsigned char len;
-    puts("net: send 'hello from gbos'"); nl();
-    slip_send("hello from gbos", 15);
-    len = slip_recv(buf, 63);
-    buf[len] = 0;
-    puts("net: recv '"); puts(buf); puts("'"); nl();
-}