; Author: Frederik Noring ; ; This file is subject to the terms and conditions of the GNU General Public ; License. See the file COPYING in the main directory of this archive ; for more details. ; DSP56k loader ; Host Interface M_BCR EQU $FFFE ; Port A Bus Control Register M_PBC EQU $FFE0 ; Port B Control Register M_PBDDR EQU $FFE2 ; Port B Data Direction Register M_PBD EQU $FFE4 ; Port B Data Register M_PCC EQU $FFE1 ; Port C Control Register M_PCDDR EQU $FFE3 ; Port C Data Direction Register M_PCD EQU $FFE5 ; Port C Data Register M_HCR EQU $FFE8 ; Host Control Register M_HSR EQU $FFE9 ; Host Status Register M_HRX EQU $FFEB ; Host Receive Data Register M_HTX EQU $FFEB ; Host Transmit Data Register ; SSI, Synchronous Serial Interface M_RX EQU $FFEF ; Serial Receive Data Register M_TX EQU $FFEF ; Serial Transmit Data Register M_CRA EQU $FFEC ; SSI Control Register A M_CRB EQU $FFED ; SSI Control Register B M_SR EQU $FFEE ; SSI Status Register M_TSR EQU $FFEE ; SSI Time Slot Register ; Exception Processing M_IPR EQU $FFFF ; Interrupt Priority Register org P:$0 start jmp <$40 org P:$40 ; ; Zero 16384 DSP X and Y words ; clr A #0,r0 ; clr B #0,r4 ; do #64,<_block1 ; rep #256 ; move A,X:(r0)+ B,Y:(r4)+ ;_block1 ; Zero (32768-512) Program words ; clr A #512,r0 ; do #126,<_block2 ; rep #256 ; move A,P:(r0)+ ;_block2 ; Copy DSP program control move #real,r0 move #upload,r1 do #upload_end-upload,_copy movem P:(r0)+,x0 movem x0,P:(r1)+ _copy movep #4,X:<3,x0 cmp x0,A #>1,x0 jeq <$0 _get_address jclr #0,X:<2,x0 jeq load_X cmp x0,A jeq load_Y load_P do y0,_load_P jclr #0,X:<root/include/crypto/sha1_base.h
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