support Quadrant 6112

res/notes.txt

@@ -8,4 +8,3 @@ Do not work yet:
   ...TODO there are more undocumented opcodes
 - Star Thief (Cavalier)
   $42C0: 4C 01 68 to bypass undocumented 6502 opcodes and 6502-specific JMP behavior
-- Quadrant 6112 (Sensible Software)

src/idbroderbund.a

@@ -1,5 +1,5 @@
 ; Broderbund & Gebelli tracers
-; written by 4am
+; written by 4am and qkumba
 ;
 ; tested on
 ; - Choplifter (Broderbund)
@@ -7,10 +7,12 @@
 ; - Dueling Digits (Broderbund)
 ; - Genetic Drift (Broderbund)
 ; - Labyrinth (Broderbund)
+; - Quadrant 6112 (Sensible Software)
 ; - Red Alert (Broderbund)
 ; - Seafox (Broderbund)
 ; - Serpentine (Broderbund)
 ; - Sky Blazer (Broderbund)
+; - Space Eggs (Sirius)
 ; - Space Quarks (Broderbund)
 ; - Star Blazer (Broderbund)
 ; - Eggs-It (Gebelli)
@@ -233,7 +235,7 @@ IDBroderbund
 @SpaceEggsCallback
          lda   $33C
          cmp   #$AD
-         bne   +
+         bne   @maybeQuadrant
          lda   $3CC
          cmp   #$36
          bne   +
@@ -245,6 +247,17 @@ IDBroderbund
          sta   $33E
          jmp   $301
 
+@maybeQuadrant
+         cmp   #$3B
+         bne   +
+         lda   #$4C xor $99
+         sta   $39A
+         lda   #<@QuadrantCallback xor $99
+         sta   $39B
+         lda   #>@QuadrantCallback xor $99
+         sta   $39C
+         jmp   $301
+
 @SpaceEggsCallback2
          lda   $37E0
          cmp   #$32
@@ -305,3 +318,8 @@ IDBroderbund
          rts
 }
 @SpaceEggsCallback3_e
+
+@QuadrantCallback
+         lda   #$60
+         sta   $6B3
+         jmp   $400

src/idsirius.a

@@ -65,6 +65,7 @@ IDSirius
          bne   @gammagoblins
          ldx   #$EA
          stx   $517
+         bne   @run1
 
 @gammagoblins
          ldx   #$4C