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Register parameters

Code Block

language	none
title	RST 20H, DEFW $0A0C

IN: 
    BHL = points to the process block
    B = 0, allocate new process, otherwise re-enter existing one
    IX = the application handle

OUT:
    Fc = 0, success
    Fc = 1, A = RC_Pre : cannot pre-empt or no room for process

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