diff --git a/hw/blank.h b/hw/blank.h
new file mode 100644
index 0000000..9b514e0
--- /dev/null
+++ b/hw/blank.h
@@ -0,0 +1,19 @@
+// TFT display...
+#undef USE_ESPI
+#undef USE_UTFT
+
+// PS/2 keyboard
+#define KBD_DATA	34
+#define KBD_IRQ		35
+
+// SPI-RAM
+#undef USE_SPIRAM
+
+// "tape" storage...
+#undef USE_SD
+#undef USE_FS
+#undef USE_SPIFFS
+
+// sound: dac and pwm
+#undef DAC_SOUND
+#undef PWM_SOUND