add Boa to the collection

res/GAMEHELP/BOA

@@ -0,0 +1,25 @@
+
+
+
+
+
+      Eat the rats, don't get eaten
+
+      Eat frogs to gain more length
+
+       Joystick, paddles, keyboard
+
+                    I
+            move  J   K  move
+                    M
+
+
+
+
+
+Esc* * * * * * * * * * * * * * * * pause
+
+Ctrl-R * * * * * * * * * * *restart game
+
+Ctrl-S * * * * * * * * * * *toggle sound
+[eof]

res/GAMES.CONF

@@ -9,6 +9,7 @@
 0001,ALIEN.TYPHOON
 1111,ALIENS
 0000,ANKH
+0000,BOA
 0001,CIDER.SPIDER=Apple Cider Spider
 0001,APPLE.PANIC
 0001,AQUATRON

res/TITLE.HGR/_FileInformation.txt

@@ -36,6 +36,7 @@ BEYOND.WOLFEN=Type(06),AuxType(4000),Access(C3)
 BLACK.MAGIC=Type(06),AuxType(4000),Access(C3)
 BLISTER.BALL=Type(06),AuxType(4000),Access(C3)
 BLOCKCHAIN=Type(06),AuxType(4000),Access(C3)
+BOA=Type(06),AuxType(4000),Access(C3)
 BOLO=Type(06),AuxType(4000),Access(C3)
 BOP.N.WRESTLE=Type(06),AuxType(4000),Access(C3)
 BORG=Type(06),AuxType(4000),Access(C3)

src/constants.a

@@ -6,7 +6,7 @@
 ; YE OLDE GRAND UNIFIED MEMORY MAP
 ;
 ; LC RAM BANK 1
-; D000..E925 - persistent data structures (gGlobalPrefsStore, gGamesListStore)
+; D000..E92C - persistent data structures (gGlobalPrefsStore, gGamesListStore)
 ; E92D..FFF1 - main program code
 ; FFF2..FFF9 - API functions and global constants available for main program
 ;              code, prelaunchers, transition effects, &c.

src/prelaunch/boa.a

@@ -0,0 +1,25 @@
+;license:MIT
+;(c) 2020 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH/BOA",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         +ENABLE_ACCEL
+         lda   #$60
+         sta   $835
+         jsr   $800       ; decompress
+         lda   #1
+         sta   $F0
+         lsr
+         sta   $F1
+         lda   #$0A
+         sta   $F2
+         +DISABLE_ACCEL
+         jmp   ($6000)
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}