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/syscall/console_service.c

@@ -152,6 +152,27 @@ static KSTATUS NtlConsoleSimpleCall(SYS_HANDLE session, NTL_CONSOLE_REQUEST* req
     return status;
 }
 
+// Sends one positioned text span in a single console request.
+KSTATUS NtlConsoleWriteAt(SYS_HANDLE session, int32_t x, int32_t y,
+                          const char* text, size_t length, size_t* writtenOut) {
+    if (writtenOut) *writtenOut = 0;
+    if (!text || length > NTL_CONSOLE_WRITE_MAX - 8u || x < 0 || y < 0)
+        return NTLSTATUS_INVALID_PARAMETER;
+    NTL_CONSOLE_REQUEST request;
+    memset(&request, 0, sizeof(request));
+    request.Size = sizeof(request);
+    request.Version = NTL_CONSOLE_PROTOCOL_VERSION;
+    request.Operation = NTL_CONSOLE_OP_WRITE_AT;
+    request.Data.WriteAt.X = x;
+    request.Data.WriteAt.Y = y;
+    request.Data.WriteAt.Length = (uint32_t)length;
+    memcpy(request.Data.WriteAt.Data, text, length);
+    NTL_CONSOLE_REPLY reply;
+    KSTATUS status = NtlConsoleCall(session, &request, &reply);
+    if (writtenOut) *writtenOut = reply.Written;
+    return status;
+}
+
 // Updates the logical console cursor.
 KSTATUS NtlConsoleSetCursor(SYS_HANDLE session, int32_t x, int32_t y) {
     NTL_CONSOLE_REQUEST request;