replace ad hoc driver loading with a proper driver manager, new DDK, new PnP manager with device matching, asynchronous startup, resource ownership and removal, add shared PCI capability helpers, replace typed, rigid services with a proper service manager, implement proper system shutdown and restart, shutting down unloads drivers and shuts down services, add simple power button, remove heavyweight boot self-tests and SMP stress runs, add monotonic timestamps to kernel debug output, fruitless USB and PS/2 fixes, make test builds opt in.

code/user/apps/memtop/memtop.c

@@ -29,6 +29,7 @@ int main(void) {
     NTL_CONSOLE_INFO console;
     SYS_MEMORY_STATUS mem;
     char metricsBuf[128];
+    size_t previousLength = 0;
 
     while (true) {
         if (NtlConsoleQueryInfo(SYS_HANDLE_INVALID, &console) == NTLSTATUS_SUCCESS &&
@@ -52,22 +53,22 @@ int main(void) {
             strcat(metricsBuf, "K ]");
 
             size_t textLen = strlen(metricsBuf);
+            // Erase any trailing characters left by a longer previous sample.
+            if (previousLength > textLen && previousLength < sizeof(metricsBuf)) {
+                memset(metricsBuf + textLen, ' ', previousLength - textLen);
+                textLen = previousLength;
+            }
             int targetX = columns - (int)textLen;
-            int targetY = 0; 
-
             if (targetX >= 0) {
                 size_t written = 0;
-                
-                // Loop through the string and use the console's dedicated text filling API
-                // This utilizes the console's native font configuration instead of drawing raw screen bits
-                for (size_t i = 0; i < textLen; i++) {
-                    (void)NtlConsoleFillCharacter(SYS_HANDLE_INVALID, metricsBuf[i],
-                                                  targetX + (int)i, targetY, 1, &written);
-                }
+                if (NtlConsoleWriteAt(SYS_HANDLE_INVALID, targetX, 0,
+                                      metricsBuf, textLen, &written) == NTLSTATUS_SUCCESS &&
+                    written == textLen)
+                    previousLength = textLen;
             }
         }
 
-        SysSleep(500);
+        SysSleep(2000);
     }
     return 0;
 }