diff --git a/CONFIG.md b/CONFIG.md
index cd3ba26a..1af7b2ac 100644
--- a/CONFIG.md
+++ b/CONFIG.md
@@ -291,9 +291,9 @@ Feature needs 2 bytes in KERNAL segmment (for CPUs needing the patch), but at th
 
 ### `ARNITECH_CONTROLLER`
 
-For the mc64 computers of arnitech only, whose expansion port holds the Arnitech controller at `$DE80`. IOINIT puts CIA #1's TOD on 50 Hz and, if the controller's signature `"ARNI"` is at `$DE80`, sets the TOD from the controller's clock. The Arnitech jump table at `$FF00` (`src/kernal/arnitech/ff00.arnitech_jumptable.s`) wraps the controller's registers.
+For the mc64 computers of arnitech only, whose expansion port holds the Arnitech controller at `$DE80`. IOINIT puts CIA #1's TOD on 50 Hz and, if the controller's signature `"ARNI"` is at `$DE80`, sets the TOD from the controller's clock. The Arnitech jump table at `$FF00` (`src/kernal/arnitech/ff00.arnitech_jumptable.s`) wraps the controller's registers, and sends and receives Ethernet frames through the CS8900A of a Network Card at the RR-Net socket, `$DE02-$DE0F`.
 
-Feature needs about 120 bytes in KERNAL segment, and the page at `$FF00`. Disable on any other machine.
+Feature needs about 450 bytes in KERNAL segment, and the page at `$FF00`. Disable on any other machine.
 
 ## Eye candy