Topic       : MC56001 Documentation
Author      : JAY Software
Version     : 1.0 (19/11/1997)
Subject     : Programming/Assembler
Nodes       : 152
Index Size  : 4106
HCP-Version : 4
Compiled on : Atari
@charset    : atarist
@lang       : 
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@help       : 
@options    : -i +y +z -t4
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View Ref-FileHOST CONTROL REGISTER (HCR):

    The HCR is an 8-bit read/write control register used by the DSP to
control the HI interrupts and flags. The HCR cannot be accessed by the host
processor. The HCR occupies the low-order byte of the internal data bus; the
high-order portion is zero filled. HCR is a read/write register to allow
individual control register bits to be set or cleared. Any reserved bits are
read as zeros and should be programmed as zeros for future compatibility.
The bit manipulation instructions are useful for accessing the individual
bits. The contents of HCR are cleared on hardware or software reset. The
control bits are described in the following paragraphs.

    Reserved Bits 5, 6, and 7:
    These unused bits are reserved for future expansion and should be
written with zeros for upward compatibility.


See also:
   Host Receive Interrupt Enable
   Host Transmit Interrupt Enable
   Host Command Interrupt Enable
   Host Flag 2
   Host Flag 3