cheat for Star Blazer

res/GAMES.CONF

@@ -274,7 +274,7 @@
 1000,SPINDIZZY
 0000,SPY.HUNTER
 0001,SPYS.DEMISE=Spy's Demise
-0000,STAR.BLAZER
+0001,STAR.BLAZER
 1001,STAR.CRUISER
 0000,STAR.THIEF
 1000,STARBLASTER

src/prelaunch/star.blazer.a

@@ -0,0 +1,31 @@
+;license:MIT
+;(c) 2020 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH/STAR.BLAZER",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         +ENABLE_ACCEL
+         lda   #$60
+         sta   $722A
+         sta   $725D
+         jsr   $4A58      ; decompress
+         +DISABLE_ACCEL
+         jsr   $4400
+         +ENABLE_ACCEL
+         jsr   $B4C6      ; decompress
+
+         +GET_MACHINE_STATUS
+         and   #CHEATS_ENABLED
+         beq   +
+         dec   $F5C       ; patch - don't decrease lives
+         dec   $F6B       ; patch - don't increase lives
++
+         +DISABLE_ACCEL
+         jmp   ($20)
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}