add some cheats

res/GAMES.CONF

@@ -229,7 +229,7 @@
 0001,LANCASTER=Lancaster
 1000,LASER.BOUNCE=Laser Bounce
 0001,LAZER.SILK=Lazer Silk
-0000,LEMMINGS=Lemmings
+0001,LEMMINGS=Lemmings
 0001,LL=Lethal Labyrinth
 0000,LP=Little Computer People
 0001,LC=Lock 'n' Chase
@@ -298,7 +298,7 @@
 0005,PICNIC.PARANOIA=Picnic Paranoia
 0001,PM=Pie-Man
 0001,PIG.PEN=Pig Pen
-0110,PIPE.DREAM=Pipe Dream
+0115,PIPE.DREAM=Pipe Dream
 1000,PITFALL.II=Pitfall II
 0000,PITSTOP.II=Pitstop II
 1001,PLANETOIDS=Planetoids
@@ -344,7 +344,7 @@
 0001,SHORT.CIRCUIT=Short Circuit
 1001,SI=Shuttle Intercept
 0006,SC=Situation Critical
-1000,SKYFOX=Skyfox
+1006,SKYFOX=Skyfox
 0001,SNACK.ATTACK=Snack Attack
 0001,SNAKE.BYTE=Snake Byte
 0001,SNEAKERS=Sneakers
@@ -378,10 +378,10 @@
 1001,STARBALL=Starball
 1001,STARBLASTER=Starblaster
 1003,STARGATE=Stargate
-1000,STARGLIDER=Starglider
+1006,STARGLIDER=Starglider
 1000,STARMINES=Starmines
 0000,STATION.5=Station 5
-0000,STELLAR.7=Stellar 7
+0006,STELLAR.7=Stellar 7
 0004,SUCCESSION=Succession
 0004,SU=Suicide!
 0001,SUPER.BUNNY=Super Bunny

src/prelaunch/lemmings.a

@@ -1,5 +1,5 @@
 ;license:MIT
-;(c) 2021 by qkumba
+;(c) 2021-2022 by qkumba
 
 !cpu 6502
 !to "build/PRELAUNCH.INDEXED/LEMMINGS",plain
@@ -12,7 +12,15 @@
          sta   $41B0
          jsr   $4000      ; decompress
          inc   $C9        ; RNG requires non-zero
-         +DISABLE_ACCEL
+         +READ_RAM2_NO_WRITE
+         lda   MachineStatus
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #$ad
+         sta   $BA5E      ; patch - don't decrease lives
++
+         jsr   DisableAccelerator
+         +READ_ROM_NO_WRITE
          jmp   $8C8
 
 !if * > $1C0 {

src/prelaunch/pipe.dream.a

@@ -1,5 +1,5 @@
 ;license:MIT
-;(c) 2020 by qkumba
+;(c) 2020, 2022 by qkumba
 
 !cpu 6502
 !to "build/PRELAUNCH.INDEXED/PIPE.DREAM",plain
@@ -14,6 +14,9 @@ my_vbl
          sta   @copy_vbl+1
          lda   WaitForVBL+2
          sta   @copy_vbl+2
+         lda   MachineStatus
+         and   #CHEATS_ENABLED
+         php
          ldy   #0
 
 @copy_vbl
@@ -31,8 +34,20 @@ my_vbl
          sta   $9D53
          lda   #>my_vbl
          sta   $9D54
+         plp
+         beq   +
+         lda   #<callback
+         sta   $8BB
+         lda   #>callback
+         sta   $8BC
++
          jmp   $881
 
+callback
+         lda   #$A5
+         sta   $A453      ; patch - don't decrease time
+         jmp   $B679
+
 !if * > $1C0 {
   !error "code is too large, ends at ", *
 }

src/prelaunch/skyfox.a

@@ -1,5 +1,5 @@
 ;license:MIT
-;(c) 2019-2021 by qkumba/Frank M.
+;(c) 2019-2022 by qkumba/Frank M.
 
 !cpu 6502
 !to "build/PRELAUNCH.INDEXED/SKYFOX",plain
@@ -7,42 +7,70 @@
 
     !source "src/prelaunch/common.a"
 
+         jmp   +
+
+callback2
+         jsr   $BC03
+         lda   #$85
+         ldx   #$A5
+         cmp   $7FB5
+         bne   plane
+         stx   $7FB5      ; patch - don't increase damage
+         stx   $9327      ; patch - don't decrease fuel
+
+plane
+         cmp   $9BC7
+         bne   nopatch
+         stx   $156A      ; patch - don't decrease fuel
+         stx   $9281      ; patch - don't decrease fuel
+         stx   $9BC7      ; patch - don't increase damage
+
+callback1
+         sec
+         sbc   #8
+         cmp   #2
+
+nopatch
+         lda   #0
+         rts
+
++
          +ENABLE_ACCEL
          inc   $80        ; requires a non-zero value for the RNG
          lda   #$60
          sta   $7E3A
          jsr   $4635
 
-         lda   #$82       ; READ_ROM_NO_WRITE
+         ldx   #$82       ; READ_ROM_NO_WRITE
-         sta   $101
+         stx   $101
-         lda   #$A6
+         ldx   #$A6
-         sta   $104
+         stx   $104
-         lda   #$FA
+         ldx   #$FA
-         sta   $105       ; update TR hook to reboot
+         stx   $105       ; update TR hook to reboot
-         lda   #0
          sta   $5FFC
-         lda   #1
+         sty   $5FFD      ; moved to LC $FFFC/D
-         sta   $5FFD      ; moved to LC $FFFC/D
 
          lda   #$4C
          sta   $6872
-         lda   #<callback
+         lda   #<callback1
          sta   $6873
-         lda   #>callback
+         sty   $6874
-         sta   $6874
          lda   #$B0
          sta   $685B
          lda   #$90
          sta   $6862
-         +DISABLE_ACCEL
+         +READ_RAM2_NO_WRITE
+         lda   MachineStatus
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #<callback2
+         sta   $8882
+         sty   $8883
++
+         jsr   DisableAccelerator
+         +READ_ROM_NO_WRITE
          jmp   $67BD
 
-callback
-         sec
-         sbc   #8
-         cmp   #2
-         rts
-
 !if * > $1C0 {
   !error "code is too large, ends at ", *
 }

src/prelaunch/starglider.a

@@ -1,5 +1,5 @@
 ;license:MIT
-;(c) 2020 by qkumba
+;(c) 2020, 2022 by qkumba
 
 !cpu 6502
 !to "build/PRELAUNCH.INDEXED/STARGLIDER",plain
@@ -7,7 +7,12 @@
 
     !source "src/prelaunch/common.a"
 
-         +ENABLE_ACCEL
+         +READ_RAM2_NO_WRITE
+         jsr   EnableAccelerator
+         lda   MachineStatus
+         and   #CHEATS_ENABLED
+         php
+         +READ_ROM_NO_WRITE
          lda   #$60
          sta   $81FC
          jsr   $800       ; decompress
@@ -25,6 +30,19 @@
          lda   #$FA
          sta   $105       ; update reset hook to reboot
 
+         plp
+         beq   +
+         lda   #$a5
+         sta   $76B3      ; patch - don't decrease fuel
+         sta   $856B      ; patch - don't increase damage
+         sta   $8E13      ; patch - don't increase weapons
+         sta   $9528      ; patch - don't increase damage
+         sta   $9BC0      ; patch - don't increase damage
+         sta   $9D34      ; patch - don't increase damage
+         sta   $9D70      ; patch - don't increase damage
+         sta   $9E37      ; patch - don't increase damage
++
+
          jmp   $BA00
 
 !if * > $1C0 {

src/prelaunch/stellar.7.a

@@ -1,5 +1,5 @@
 ;license:MIT
-;(c) 2019 by qkumba/Frank M.
+;(c) 2019, 2022 by qkumba/Frank M.
 
 !cpu 6502
 !to "build/PRELAUNCH.INDEXED/STELLAR.7",plain
@@ -20,9 +20,25 @@
          lda   #$A4
          sta   $AE28      ; reset vector patch
 
-         +DISABLE_ACCEL
+         +READ_RAM2_NO_WRITE
+         lda   MachineStatus
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #<callback
+         sta   $AE71
+         lda   #>callback
+         sta   $AE72
++
+         jsr   DisableAccelerator
+         +READ_ROM_NO_WRITE
          jmp   $AE27
 
+callback
+         jsr   $AF60
+         lda   #$AD
+         sta   $80D8      ; patch - don't decrease fuel
+         sta   $8095      ; patch - don't increase damage
+         jmp   $A440
 
 !if * > $1C0 {
   !error "code is too large, ends at ", *