Add /RESET command and nreset() func. Mainly for testing.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/nio.c b/src/nio.c
index cdececb..399b06d 100644
--- a/src/nio.c
+++ b/src/nio.c
@@ -148,6 +148,22 @@ unsigned char nwrite(char* devicespec, unsigned char* buf, unsigned short len)
   return OS.dcb.dstats; // Return SIO error or success.
 }
 
+/* https://fujinet.online/wiki/?p=SIO-Command-%24FF-Reset-FujiNet */
+unsigned char nreset(void) {
+  OS.dcb.ddevic   = 0x70;
+  OS.dcb.dunit    = 1;
+  OS.dcb.dcomnd   = 0xff; /* reset */
+  OS.dcb.dstats   = DWRITE;
+  OS.dcb.dbuf     = 0;
+  OS.dcb.dtimlo   = TIMEOUT;
+  OS.dcb.dbyt     = 0;
+  OS.dcb.daux     = 0;
+  siov();
+
+  return OS.dvstat[DVSTAT_EXTENDED_ERROR]; // return extended status
+}
+
+
 /* IRC doesn't need this */
 #if 0
 unsigned char nlogin(char* devicespec, char *login, char *password)