From a52336db070b8a4c4c0f3a497dc3d21c3332043f Mon Sep 17 00:00:00 2001 From: n loewen Date: Mon, 21 Aug 2023 14:47:56 +0100 Subject: [PATCH] (docs) readme - Fix keypad section, updating keypad address and removing pointer-to-keypad --- readme.md | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/readme.md b/readme.md index 30b70b9..8a1d752 100644 --- a/readme.md +++ b/readme.md @@ -85,8 +85,7 @@ Put differently: it starts executing instructions at the address contained in `$ ### Keypad -The value of the latest keypress on a hex keypad is stored at `$20`. -(The keypad can also be relocated by changing the value of the pointer-to-keypad at `$22`.) +The value of the latest keypress on a hex keypad is stored at `$1B`. The keypad uses the same layout as the COSMAC VIP (and CHIP-8). The CPU simulator maps those keys onto a Qwerty set.