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Register parameters

Code Block

language	none
title	RST 20H, DEFW $1E0C

IN: 
    -

OUT:
    Fc = 0 : CLI has input stream
    Fc = 1, A = RC_Eof : there is no CLI or no input stream

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

...