Mercurial > hg > Members > kono > os9 > sbc09

diff os9/level2/boot.asm @ 37:7baffb867d70

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nitros9 level 1 worked
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 16 Jul 2018 11:22:28 +0900
parents 01519215ec70
children 52f7ad4c2ebb
line wrap: on
line diff
--- a/os9/level2/boot.asm	Sun Jul 15 20:38:49 2018 +0900
+++ b/os9/level2/boot.asm	Mon Jul 16 11:22:28 2018 +0900
@@ -30,6 +30,9 @@
          fcb   edition
 
 start    
+         lbra    entry
+         lbra    btdebg
+entry
          ldy    #$40    extended rom page no. 
          clra
          clrb
@@ -81,6 +84,11 @@
 last     clr    $ffa0
          puls   d,x,y,u,pc
 
+      ** put lbsr btdebug on <$5e
+btdebug  anda   #$7f
+         sta    $ff81
+         rts
+
          emod
 eom      equ   *
          end