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
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@default    : 
@help       : 
@options    : -i +y +z -t4
@width      : 100
View Ref-FileHOST TRANSMIT DATA REGISTER (HTX):

    The HTX register is used for DSP-to-host data transfers. The HTX
register is viewed as a 24-bit write-only register by the DSP CPU. Writing
the HTX register clears HTDE. The DSP may program the HTIE bit to cause a
host transmit data interrupt when HTDE is set. The HTX register is
transfered as a 24-bit data to the receive byte registers (RXH:RXM:RXL) if
both the HTDE bit (DSP CPU side) and receive data full (RXDF) status bits
(host processor side are cleared. This transfer operation sets RXDF and
HTDE. Data should not be written to the HTX until HTDE is set to prevent the
previous data from being overwritten. Resets do not affect HTX.