From: Dan White <dan@whiteaudio.com>
Date: Mon, 23 Apr 2012 18:58:20 +0000 (-0500)
Subject: Another bug in NS430 bootcode
X-Git-Tag: calibrations~100
X-Git-Url: http://git.whiteaudio.com/gitweb/?a=commitdiff_plain;h=b416cc66a8515f5abafd5b9890a94d1e5f776b96;p=430.git

Another bug in NS430 bootcode
---

diff --git a/rom-label.asm b/rom-label.asm
index cd7acd8..e23e554 100644
--- a/rom-label.asm
+++ b/rom-label.asm
@@ -388,6 +388,7 @@ init:
     3172:       7c 46           mov.b   @r6+,   r12     
     3174:       54 40 3f 40     mov.b   __bss_start, r4 ;0x403f, r4   ;PC rel. 0x071b7
     3178:       00 40           brpc            
+;   3176:       3f 40 00 40     mov #16384, r15
     317a:       8f 43 00 00     mov     #0,     0(r15)  ;r3 As==00, CRCDI_L(r15)
     317e:       2f 53           incd    r15             
     3180:       3f 90 9f 4b     cmp     #19359, r15     ;#0x4b9f
@@ -448,6 +449,11 @@ main:
     31da:       b2 40 3e 00     mov     #62,    &PAPER  ;#0x003e
     31de:       0c 1a 
     31e0:       b0 12 76 31     call    #0x3176 
+; FIXME: ^^^ BUG ^^^ BUG ^^^ BUG ^^^ BUG ^^^ BUG ^^^ BUG ^^^
+; *** IN FABBED CHIP: ***
+; The call to #0x3176 should be init() or #0x3172.
+; As-is, this jumps into the middle of a 3-word instruction within init().
+; -> Death by foot-shooting.
 
 ;setup SPI0
 ; SPI_En = 1