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example of Is_any_key_pressed #183

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example of Is_any_key_pressed #183

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226e2ac
example is any key pressed
Sep 28, 2024
85d0009
corrections
Sep 30, 2024
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10 changes: 10 additions & 0 deletions cpctelera/src/keyboard/cpct_isAnyKeyPressed.s
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Expand Up @@ -49,6 +49,16 @@
;; be updated* with current key status. To do this, <cpct_scanKeyboard>
;; routines *must be* used before calling this function.
;;
;; Next code example shows how to use this function in conjunction with <cpct_scanKeyboard>.
;;
;; (start code)
;; u8 any_key_pressed() {
;; u8 key_pressed; // Declares symbol
;; cpct_scanKeyboard(); // Updates the keyboard status
;; key_pressed = cpct_isAnyKeyPressed(); // Checks if any key is pressed, and
;; return key_pressed; // returns a number not 0 if a key is pressed.
;; }
;; (end code)
;; Destroyed Register values:
;; A, B, HL
;;
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