minor optimizations

res/text/spellbreaker.txt

@@ -26,7 +26,7 @@
  it look easy." The answer is Barsap.
 
 [versions]
-R87.DEPROT.Z3=Release elease 87 / Serial number 860904
+R87.DEPROT.Z3=Release 87 / Serial number 860904
 R63.DEPROT.Z3=Release 63 / Serial number 850916
 
 [options]

src/launch.a

@@ -84,7 +84,6 @@ LaunchInterpreter
          jsr   LoadInterpreter
          bcs   .playError
 
-; change prefix to folder of file we want the interpreter to open
          jsr   ResetPath
          +LDADDR kGameRootDirectory
          jsr   AddToPath
@@ -92,30 +91,21 @@ LaunchInterpreter
          jsr   okvs_get
          !word gGlobalPrefsStore
          !word kLastPlayed
+         +STAY +
          jsr   AddToPath
 
-         jsr   SetPrefix
+         jsr   SetPrefix             ; set ProDOS prefix to game directory
          !word gPathname
          bcs   .playError
 
-; put just the filename at $2006
-         +LDAY addrVersions
-         +STAY $00
-         ldy   #0
--        lda   ($00),y
-         cmp   #$BD                  ; '='
-         beq   .doneBuildingFilename
-         iny
-         and   #$7F
-         sta   $2006,y
-         bra   -
-.doneBuildingFilename
-         sty   $2006
+         jsr   okvs_get
+         !word gGlobalPrefsStore
++        !word $FDFD                 ; SMC
+         jsr   SetStartupPath        ; store game filename at $2006
 
-; shut down WeeGUI and transfer control to interpreter
-         jsr   ExitWeeGUI
-         jsr   SetInterpreterOptions
-         jmp   kSystemAddress
+         jsr   ExitWeeGUI            ; shut down WeeGUI
+         jsr   SetInterpreterOptions ; set options struct at $300
+         jmp   kSystemAddress        ; exit via interpreter
 
 LoadInterpreter
          jsr   ResetPath
@@ -125,7 +115,6 @@ LoadInterpreter
          jsr   LoadFile
          !word gPathname
          !word kSystemAddress
-         !word $2000
          !word kProDOSFileBuffer
          rts
 .interpreterFilename

src/parse.gameinfo.a

@@ -53,7 +53,6 @@ LoadGameInfo
          jsr   LoadFile
          !word gPathname
          !word $0800
-         !word $1400
          !word kProDOSFileBuffer
 
          lda   #$FF

src/parse.gamelist.a

@@ -20,7 +20,6 @@ LoadGameList
          jsr   LoadFile              ; load prefs file at $2000
          !word .gamesListFilename
 .handle  !word $2000
-         !word $2000
          !word kProDOSFileBuffer
 
          jsr   ParseKeyValueText     ; parse contents into games list store

src/parse.prefs.a

@@ -54,7 +54,6 @@ LoadGlobalPreferences
          jsr   LoadFile              ; load prefs file at $2000
          !word .globalPrefsFilename
 .handle  !word $2000
-         !word $2000
          !word kProDOSFileBuffer
 
          jsr   ParseKeyValueText     ; parse contents into global prefs store

src/path.a

@@ -12,6 +12,8 @@
 ; - gPathname
 ;
 
+gPathname = $3F00
+
 ;------------------------------------------------------------------------------
 ; ResetPath
 ; reset gPathname to length 0
@@ -74,6 +76,3 @@ SetStartupPath
          bpl   -
          rts
 }
-
-gPathname
-         !fill 65                    ; enough zeroes for any ProDOS pathname

src/prodos.a

@@ -37,11 +37,10 @@ PRODOSMLI =    $BF00      ; [callable] MLI entry point
 ; LoadFile
 ; load a file into memory all at once, using ProDOS MLI calls
 ;
-; in:  stack contains 8 bytes of parameters:
+; in:  stack contains 6 bytes of parameters:
 ;      +1 address of pathname
 ;      +3 address of data buffer (to receive file contents)
-;      +5 [word] maximum length of data to read
-;      +7 address of ProDOS file buffer
+;      +5 address of ProDOS file buffer
 ; out: if C set, load failed and A contains error code
 ;        from open or read
 ;      if C clear, load succeeded and ($02) contains
@@ -52,7 +51,7 @@ PRODOSMLI =    $BF00      ; [callable] MLI entry point
 ;-------------------------------
 !zone {
 LoadFile
-         +PARAMS_ON_STACK 8
+         +PARAMS_ON_STACK 6
 
          ldy   #$01
          lda   (PARAM),y    ; lo byte of pathname
@@ -60,7 +59,7 @@ LoadFile
          iny
          lda   (PARAM),y    ; hi byte of pathname
          sta   mliparam+2
-         ldy   #$07
+         ldy   #$05
          lda   (PARAM),y    ; lo byte of ProDOS file buffer
          sta   mliparam+3
          iny
@@ -77,11 +76,8 @@ LoadFile
          iny
          lda   (PARAM),y    ; hi address of data buffer
          sta   mliparam+3
-         iny
-         lda   (PARAM),y    ; lo data length
-         sta   mliparam+4
-         iny
-         lda   (PARAM),y    ; hi data length
+         lda   #$FF
+         sta   mliparam+4 ; max data length (unlimited, YOLO)
          sta   mliparam+5
          pla              ; pull file reference number
          jsr   _readfile

src/ui.main.keys.a

@@ -153,7 +153,6 @@ HandleKey
          jsr   LoadFile
          !word gPathname
          !word kSystemAddress
-         !word $2000
          !word kProDOSFileBuffer
          bcs   .xyzzyError
          jsr   ExitWeeGUI