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, 39 deletions

diff --git a/c/netlib.h b/c/netlib.h
deleted file mode 100644
index ec98eac..0000000
--- a/c/netlib.h
+++ /dev/null
@@ -1,39 +0,0 @@
-#ifndef NETLIB_H
-#define NETLIB_H
-/* SLIP (RFC 1055) framing over the link port. Header-only so each program gets
-   its own copy (the C build links one translation unit per program). */
-#include "gbos.h"
-
-#define SLIP_END     0xC0
-#define SLIP_ESC     0xDB
-#define SLIP_ESC_END 0xDC
-#define SLIP_ESC_ESC 0xDD
-
-/* send a framed packet (len up to 255) */
-static void slip_send(const char *buf, unsigned char len) {
-    unsigned char i, c;
-    ssend(SLIP_END);
-    for (i = 0; i < len; i++) {
-        c = (unsigned char)buf[i];
-        if (c == SLIP_END)      { ssend(SLIP_ESC); ssend(SLIP_ESC_END); }
-        else if (c == SLIP_ESC) { ssend(SLIP_ESC); ssend(SLIP_ESC_ESC); }
-        else                      ssend(c);
-    }
-    ssend(SLIP_END);
-}
-
-/* receive one framed packet into buf (max), returns its length */
-static unsigned char slip_recv(char *buf, unsigned char max) {
-    unsigned char len = 0, c;
-    for (;;) {
-        c = srecv();
-        if (c == SLIP_END) { if (len) return len; continue; }
-        if (c == SLIP_ESC) {
-            c = srecv();
-            if (c == SLIP_ESC_END) c = SLIP_END;
-            else if (c == SLIP_ESC_ESC) c = SLIP_ESC;
-        }
-        if (len < max) buf[len++] = (char)c;
-    }
-}
-#endif