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Register parameters

Code Block
languagenone
titleRST 20H, DEFW DEFB $2A
 IN:
     -

OUT, if call successful:
     Fc = 0
     A = character read from standard input

OUT, if call failed:
     Fc = 1
     A = error code:
          RC_SUSP ($69), process suspended or machine revived
          RC_DRAW ($66), process suspended and screen corrupted
          RC_QUIT ($67), kill request
          RC_ESC ($01), escape condition detected

Registers changed after return:
     ..BCDEHL/IXIY same
     AF....../.... different

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