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(docs) readme - Fix keypad section, updating keypad address and removing pointer-to-keypad

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n loewen 2023-08-21 14:47:56 +01:00
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readme.md
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@ -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.