1 files changed, 13 insertions, 2 deletions

diff --git a/src/main_gui.cpp b/src/main_gui.cpp
index dd001c8..2e4eb91 100644
--- a/src/main_gui.cpp
+++ b/src/main_gui.cpp
@@ -120,7 +120,7 @@ static void PrintUsage()
     printf("            wallet-crypto, wallet-encrypt, wallet-portability,\n");
     printf("            net-message,\n");
     printf("            consensus-limits, pool-stratum,\n");
-    printf("            parse-money, socks5-proxy, or managed-tor\n");
+    printf("            parse-money, network-params, socks5-proxy, or managed-tor\n");
     printf("\n");
     printf("Mining mode:\n");
     printf("  /operator\n");
@@ -132,6 +132,8 @@ static void PrintUsage()
     printf("  /stratumbridgeport=N       (default 3333; listen on 127.0.0.1)\n");
     printf("  /solomine\n");
     printf("  /genproclimit=N            (mining threads; 0 or absent = every core but one)\n");
+    printf("  /nolargepages              (do not ask for 2 MB pages for the RandomX\n");
+    printf("                              cache, dataset and scratchpads)\n");
     printf("  /checkblocks=N             (blocks re-verified at startup, default 288, 0 = all)\n");
     printf("\n");
     printf("Pool operator announcement:\n");
@@ -148,7 +150,8 @@ static void PrintUsage()
     printf("  /onionservice=HOST.onion:PORT  (advertise this node's Tor hidden service)\n");
     printf("\n");
     printf("Network:\n");
-    printf("  /port=N                    (P2P listen port, default 8433)\n");
+    printf("  /testnet                   (isolated test network genesis, datadir, port, and magic)\n");
+    printf("  /port=N                    (P2P listen port, default 8433; testnet 18433)\n");
     printf("  /socks=HOST:PORT           (SOCKS5 proxy for Nostr, .btf relay, and onion dials)\n");
     printf("  /tor[=HOST:PORT]           (Tor mode; default SOCKS5 proxy is 127.0.0.1:9050)\n");
     printf("  /managedtor[=PATH]         (start Tor, create a hidden service, advertise its onion)\n");
@@ -214,6 +217,9 @@ static void ParseStartupArguments(int argc, char* argv[])
     if (arg(argc,argv,"/datadir") || arg(argc,argv,"-datadir"))
         strSetDataDir = argval2(argc, argv, "/datadir", "-datadir");
 
+    bool fUseTestNet = arg(argc, argv, "/testnet") || arg(argc, argv, "-testnet");
+    SelectChainParams(fUseTestNet);
+
     if (arg(argc,argv,"/debug") || arg(argc,argv,"-debug"))
         fDebug = true;
 
@@ -284,6 +290,11 @@ static void ParseStartupArguments(int argc, char* argv[])
     if (!strCheckBlocks.empty())
         nCheckBlocksOnLoad = atoi(strCheckBlocks.c_str());
 
+    // Must be read before LoadBlockIndex(), which is what first calls
+    // RandomXInit() and fixes how the cache is allocated.
+    if (arg(argc,argv,"/nolargepages") || arg(argc,argv,"-nolargepages"))
+        fRandomXLargePages = false;
+
     // /genproclimit=N -- threads to hash with. 0 or absent means automatic,
     // which is every core but one. Named after Bitcoin's own option so it reads
     // familiarly to anyone who has run one of these before.