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https://github.com/a2-4am/passport.git
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add support for RPS protection [fixes several Britannica and Thunder Mountain disks]
This commit is contained in:
4am
parent
73270715a8
commit
d314e7be03
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@ -546,3 +546,40 @@ xHarvey
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sta T02S0F
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.exit rts
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}
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;-------------------------------
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; xRPS
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; check if disk has RPS protection
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; (boot1 jumps to $B3C1 to change RWTS,
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; epilogue checker jumps to $B6B3 to
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; check timing bits, late DOS routes
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; through nibble check at $B74B)
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;
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; in: $B600..$BFFF contains boot1
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; out: C clear if protection found
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; C set if protection was not found
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;-------------------------------
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!zone {
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xRPS
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lda #$B7
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ldx #$47
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ldy #$07
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jsr CompareMemory
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!byte $4C,$C1,$B3
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!byte $60
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!byte $48
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!byte $A9,$02
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bcs .exit
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lda #kSectorOptional
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sta T02S05
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sta T02S0A
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lda #kSectorSwitchToBuiltinRWTS
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sta T02S04 ; some variants might auto-switch earlier, some need to be told
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ldy #$FF
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sty $BA29
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iny
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sty $BAFF
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ldy #$3F
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sty $BA96
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.exit rts
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}
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@ -84,7 +84,7 @@ AnalyzeT00
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!source "../patchers/rwtslog.a"
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!source "../patchers/mecc.a"
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!source "../patchers/rol1e.a"
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; !source "../patchers/thunder.a"
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!source "../patchers/rps.a"
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!source "../patchers/bb03.a"
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!source "../patchers/rwtsswap.a"
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!source "../patchers/rwtsswap2.a"
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@ -278,31 +278,36 @@ ADStyle
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; before we start.
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;
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jsr xHeredityDog
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bcs .noDog
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bcs +
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lda #s_bb00
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jsr PrintByID
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.noDog
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+
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jsr xSunburst
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bcs .noSun
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bcs +
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lda #s_sunburst
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jsr PrintByID
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.noSun
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+
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jsr xOptimumRes
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bcs .noOptimum
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bcs +
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lda #TRUE
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sta gIsOptimum
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lda #s_optimum
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jsr PrintByID
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.noOptimum
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+
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jsr xSVE
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bcs .noSVE
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bcs +
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lda #s_sve
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jsr PrintByID
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lda #$CA
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sta $BE5B
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lda #$B6
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sta $BE5C
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.noSVE
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+
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jsr xRPS
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bcs +
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lda #s_rps
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jsr PrintByID
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+
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jsr xB660
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jsr xB4BB
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jsr xHarvey
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84
src/patchers/rps.a
Executable file
84
src/patchers/rps.a
Executable file
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@ -0,0 +1,84 @@
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;-------------------------------
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; #RPS
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; boot1 jumps to $B3C1 to change RWTS,
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; epilogue checker jumps to $B6B3 to
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; check timing bits, late DOS routes
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; through nibble check at $B74B
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;
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; so named because the disk volume string is
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; C1984 RPS A#
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;
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; variant 1
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; - Dig Dug (Thunder Mountain)
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; - Pac-Man (Thunder Mountain)
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; - Galaxian (Thunder Mountain)
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;
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; variant 2
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; - Problem Solving in Algebra (Encyclopaedia Britannica)
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; - Math Skills: Elementary Level (Encyclopaedia Britannica)
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; - Math Skills: Junior High Level (Encyclopaedia Britannica)
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;-------------------------------
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!zone {
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bit gMode ; nothing to do here in verify-only mode
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bpl .exit
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lda gIsBoot0 ; if DOS 3.3 boot0 loader
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bne .exit
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lda gIsBoot1 ; and DOS 3.3 boot1 loader
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bne .exit
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lda #$01
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ldx #$48
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ldy #$02
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jsr compare ; if T00,S01,$48 ==
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!byte $C1,$B3
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bcs .exit ; primary pattern not found, bail
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ldy #$02
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jsr modify ; then set T00,S01,$48 =
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!byte $1F,$B4
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lda #$03
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ldx #$3E
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ldy #$04
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jsr compare ; if T00,S03,$3E ==
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!byte $4C,$B3,$B6
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!byte $EA
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bcs .variant1
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lda #$03
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ldx #$3E
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ldy #$04
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jsr modify ; then set T00,S03,$3E =
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!byte $C9,$AA
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!byte $F0,$5C
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.variant1
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lda #$01
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ldx #$87
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ldy #$03
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jsr compare ; if T00,S01,$87 ==
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!byte $6C,$58,$9D
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bcs .variant2 ; passport-test-suite/Pac-Man (Thunder Mountain).woz [C=0] here
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ldx #$8E
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ldy #$01
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jsr modify ; then set T00,S01,$8E =
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!byte $F8 ; change branch to unconditionally jump to success path
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ldx #$92
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ldy #$01
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jsr modify ; and set T00,S01,$92 =
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!byte $F1 ; change branch to unconditionally jump to success path
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bvc .exit ; always branches
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.variant2
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inx
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ldy #$03
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jsr compare ; if T00,S01,$88 ==
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!byte $6C,$58,$9D
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bcs .exit ; passport/test-suite/Problem Solving in Algebra.woz [C=0] here
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ldx #$8E
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ldy #$01
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jsr modify ; then set T00,S01,$8E =
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!byte $F9 ; change branch to unconditionally jump to success path
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ldx #$92
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ldy #$01
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jsr modify ; and set T00,S01,$92 =
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!byte $F2 ; change branch to unconditionally jump to success path
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.exit
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}
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@ -1,63 +0,0 @@
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; /!\ CURRENTLY UNUSED, REQUIRES ADDITIONAL TRACE SUPPORT, KEEP IN REPO FOR FUTURE RELEASE /!\
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;-------------------------------
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; #THUNDER
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; boot1 jumps to $B3C1 to change RWTS,
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; epilogue checker jumps to $B6B3 to
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; check timing bits, late DOS routes
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; through nibble check at $B74B
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; e.g. Thunder Mountain versions of
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; Dig Dug, Pac-Man, Galaxian
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;-------------------------------
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!zone {
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bit gMode ; nothing to do here in verify-only mode
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bpl .no
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lda gIsBoot0 ; if DOS 3.3 boot0 loader
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bne .no
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lda gIsBoot1 ; and DOS 3.3 boot1 loader
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bne .no
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lda #$03
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ldx #$3E
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ldy #$04
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jsr compare ; and T00,S03,$3E ==
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!byte $4C,$B3,$B6
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!byte $EA
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bcc +
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.no
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jmp .exit
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+
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lda #$01
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ldx #$47
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ldy #$4C
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jsr compare ; and T00,S01,$47 ==
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!byte $4C
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!byte $C1,$B3,$60,$48,$A9,$02,$8D,$EC
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!byte $B7,$A9,$00,$8D,$EB,$B7,$8D,$F2
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!byte $B7,$A9,$05,$8D,$ED,$B7,$A9,$36
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!byte $8D,$F0,$B7,$A9,$B4,$8D,$F1,$B7
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!byte $A9,$01,$8D,$E1,$B7,$8D,$F4,$B7
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!byte $20,$93,$B7,$90,$09,$4C,$62,$FA
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!byte $EA,$EA,$EA,$EA,$EA,$EA,$20,$36
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!byte $B4,$68,$F0,$03,$6C,$72,$AA,$6C
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!byte $58,$9D,$00,$A9,$00,$F0,$BC,$A9
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!byte $01,$D0,$B8
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bcs .exit
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lda #s_thunder
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jsr PrintByID
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lda #$01
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ldx #$48
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ldy #$02
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jsr modify ; then set T00,S01,$48 =
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!byte $1F,$B4
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lda #$01
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ldx #$7E
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ldy #$01
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jsr modify ; and set T00,S01,$7E =
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!byte $2C
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lda #$03
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ldx #$3E
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ldy #$04
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jsr modify ; and set T00,S03,$3E =
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!byte $C9,$AA,$F0,$5C
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.exit
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}
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@ -71,9 +71,11 @@ T00S0E !byte $FF
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T00S0F !byte $FF
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T01 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T01S0F !byte $FF
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T02 !byte $FF,$FF,$FF,$FF,$FF
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T02 !byte $FF,$FF,$FF,$FF
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T02S04 !byte $FF
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T02S05 !byte $FF
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!byte $FF,$FF,$FF,$FF,$FF,$FF
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!byte $FF,$FF,$FF,$FF
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T02S0A !byte $FF,$FF
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T02S0C !byte $FF
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!byte $FF,$FF
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T02S0F !byte $FF
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@ -63,7 +63,7 @@ StringTableLow
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!byte <.e7
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!byte <.jmpbeca
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!byte <.bb03
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!byte <.thunder
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!byte <.rps
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!byte <.jmpae8e
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!byte <.diskvol
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!byte <.d5d5f7
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@ -183,7 +183,7 @@ StringTableHigh
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!byte >.e7
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!byte >.jmpbeca
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!byte >.bb03
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!byte >.thunder
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!byte >.rps
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!byte >.jmpae8e
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!byte >.diskvol
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!byte >.d5d5f7
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@ -280,7 +280,7 @@ StringTableHigh
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; can be set directly before calling PrintByID.
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;
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.header
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!text "Passport by 4am 2020-07-14",$00
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!text "Passport by 4am 2020-07-15",$00
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.mainmenu
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!text "________________________________________",$8D,$8D,$8D,$8D,$8D,$8D,$8D,$8D
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!text " "
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@ -442,9 +442,9 @@ StringTableHigh
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.bb03
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!text "T%t,S%0 Found a self-decrypting",$8D
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!text "protection check at $BB03.",$8D,$00
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.thunder
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!text "T00,S03 RWTS counts timing bits and",$8D
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!text "checks them later.",$8D,$00
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.rps
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!text "T00,S01 Found RPS protection check",$8D
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!text "Some sectors on T02 might be unreadable",$8D,$00
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.jmpae8e
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!text "T00,S0D Disk calls a protection check at"
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!text "$AE8E after initializing DOS.",$8D,$00
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@ -49,7 +49,7 @@ s_runhello = $2B
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s_e7 = $2C
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s_jmpbeca = $2D
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s_bb03 = $2E
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s_thunder = $2F
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s_rps = $2F
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s_jmpae8e = $30
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s_diskvol = $31
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s_d5d5f7 = $32
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@ -74,7 +74,7 @@ s_eab0 = $44
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s_eatrk6 = $45
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s_eeef = $46
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s_poke = $47
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s_bootcounter = $48
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s_bootcounter =$48
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s_milliken = $49
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s_jsr8b3 = $4A
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s_daviddos = $4B
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