Merge pull request #6 from peterferrie/master

enable Spiradisc boots on GS
2024-06-01 09:41:33 +00:00 · 2019-03-12 12:14:13 -04:00 · 2019-03-12 12:14:13 -04:00 · 6e5e2e75fc
commit 6e5e2e75fc
parent a5120786e7 47cf5be749
1 changed files with 8 additions and 1 deletions
--- a/src/idspiradisc.a
+++ b/src/idspiradisc.a
@ -30,6 +30,13 @@ IDSpiraDisc

@callback1
 ; disable ROM checksum-failure branching
+         lda   $B845
+         cmp   #$5C
+         bne   +
         lda   #0
         sta   $B845
-         jmp   $B800
+; and boot PROM checksum-failure branching
+         sta   $B606
+         lda   #$24
+         sta   $B60A
+        jmp   $B800