[PATCH] make firmware/dsp56k/bootstrap.asm buildable on a56

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From: Robert Millan
Date: Monday, October 27, 2008 - 2:44 pm

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[ Please CC me, I'm not subscribed ]

Hi!

Attached patch makes firmware/dsp56k/bootstrap.asm buildable on a56, the
free Motorola DSP56001 assembler (http://www.zdomain.com/a56.html).

Summary of changes:

  - Remove '<' and '>' candy (they specify explicit addressing modes,
    which a56 don't grok, but uses implicitly anyway).

  - Replace 'move' with 'movem' when accessing program memory.

  - Rename a few labels to avoid duplicates (which a56 can't handle).

--=20
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."

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Signed-off-by: Robert Millan <rmh@aybabtu.com>

diff --git a/firmware/dsp56k/bootstrap.asm b/firmware/dsp56k/bootstrap.asm
index 10d8919..a411047 100644
--- a/firmware/dsp56k/bootstrap.asm
+++ b/firmware/dsp56k/bootstrap.asm
@@ -51,19 +51,19 @@ start   jmp     <$40
         ; Copy DSP program control
         move    #real,r0
         move    #upload,r1
-        do      #upload_end-upload,<_copy
-        move    P:(r0)+,x0
-        move    x0,P:(r1)+
-_copy   movep   #>4,X:<<M_HCR
-        movep   #>$c00,X:<<M_IPR
+        do      #upload_end-upload,_copy
+        movem    P:(r0)+,x0
+        movem    x0,P:(r1)+
+_copy   movep   #4,X:<<M_HCR
+        movep   #$c00,X:<<M_IPR
         and     #<$fe,mr
         jmp     upload
=20
 real
         org     P:$7ea9
 upload
-        movep   #>1,X:<<M_PBC
-        movep   #>0,X:<<M_BCR
+        movep   #1,X:<<M_PBC
+        movep   #0,X:<<M_BCR
=20
 next    jclr    #0,X:<<M_HSR,*
         movep   X:<<M_HRX,A
@@ -81,18 +81,18 @@ _get_length
         cmp     x0,A
         jeq     load_Y
=20
-load_P  do      y0,_load
+load_P  do      y0,_load_P
         jclr    #0,X:<<M_HSR,*
         movep   X:<<M_HRX,P:(r0)+
-_load   jmp     next
-load_X  do      y0,_load
+_load_P jmp     next
+load_X  do      y0,_load_X
         jclr    #0,X:<<M_HSR,*
         movep   X:<<M_HRX,X:(r0)+
-_load   jmp     next
-load_Y  do      y0,_load
+_load_X jmp     next
+load_Y  do      y0,_load_Y
         jclr    #0,X:<<M_HSR,*
         movep   X:<<M_HRX,Y:(r0)+
-_load   jmp     next
+_load_Y jmp     next
=20
 upload_end
         end

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[PATCH] make firmware/dsp56k/bootstrap.asm buildable on a56, Robert Millan, (Mon Oct 27, 2:44 pm)