mirror of
https://github.com/a2-4am/passport.git
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support some EA titles
This commit is contained in:
parent
3aefe224aa
commit
ce945537c0
@ -302,3 +302,22 @@ xB660
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.no
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rts
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}
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;-------------------------------
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; IsEATrack6
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; check if track 6 even exists
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; in the case of EA, track 6 reads as track 5
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;
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; in slot 6, drive 1 is on track to test
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; out C clear if read track does not match expected track
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; C set otherwise
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;-------------------------------
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IsEATrack6
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lda gTrack
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cmp #6
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sec
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bne +
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lda $2E ;DOS read track number
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sbc #5
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cmp #1
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+ rts
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107
src/id/ea.a
Normal file
107
src/id/ea.a
Normal file
@ -0,0 +1,107 @@
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;-------------------------------
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; IDEA
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; identify Electronic Arts custom bootloader
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;
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; in: track buffer contains T00,S00
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; out: C clear if EA bootloader was found
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; C set if not found
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; all other flags clobbered
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; all registers clobbered
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;
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; module by qkumba
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;-------------------------------
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IDEA
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lda #$00
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tax
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ldy #36
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jsr compare
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!byte $05,$4C,$04,$08,$A9,$00,$8D,$F2
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!byte $03,$A9,$C6,$8D,$F3,$03,$49,$A5
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!byte $8D,$F4,$03,$A9,$00,$8D,$C7,$09
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!byte $AD,$E9,$C0,$A9,$B0,$85,$3E,$A9
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!byte $02,$20,$00,$0C
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bcc +
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lda #$00
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tax
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ldy #39
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jsr compare
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!byte $05,$4C,$04,$08,$A9,$00,$8D,$F2
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!byte $03,$A9,$C6,$8D,$F3,$03,$49,$A5
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!byte $8D,$F4,$03,$A9,$00,$8D,$C7,$09
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!byte $AD,$E9,$C0,$A9,$B7,$48,$A9,$B0
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!byte $85,$3E,$A9,$00,$20,$00,$0C
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+ rts
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foundea
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;
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; We found an EA bootloader. Now we create
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; an RWTS that can read the rest of the disk.
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; Starting with our built-in RWTS, we modify address
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; and data prologues based on the parameters of the
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; original disk.
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;
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!zone {
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lda #s_eab0
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jsr PrintByID
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jsr CopyUniversal
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; mark track 6 as "skip" in sector map
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ldy #$0F
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lda #$00
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.skipsectors
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sta T06,y
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dey
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bpl .skipsectors
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; mark track $22 as "optional" in sector map
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ldy #$0F
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lda #$80
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.ignoresectors
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sta T22,y
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dey
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bpl .ignoresectors
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;hook read data prologue
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lda #<.checktrk
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sta $BE36
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lda #>.checktrk
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sta $BE37
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;
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; this RWTS alters the data prologue in a routine
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; on a non-zero track, so we need to set a flag so
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; we know to search for it later
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;
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lda #TRUE
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sta gIsEA
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jmp ADStyle
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.prologtbl
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!byte $AA, $BB, $AD, $CF
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;try regular values first
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.checktrk
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ldy #0
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lda .prologtbl, y
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sta $B8F1
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lda .prologtbl+2, y
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sta $B8FC
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jsr $B8DC
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bcc +
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;on failure, switch to alternative values
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;we keep using the last successful values until we fail
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;and then we switch again
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lda .checktrk + 1
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eor #1
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sta .checktrk + 1
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;and allow DOS to retry
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;if DOS runs out of retries, then Passport will report it
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+ rts
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}
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@ -18,14 +18,17 @@ CheckT00S00
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sta gLastTrack
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; Quick sanity check -- only recognized values for $0800
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; are 1 or 2.
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; are 1 or 2 for regular disks, and 5 for possible Electronic Arts.
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lda $0800
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beq +
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cmp #$03
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bcc ++
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cmp #$05
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beq ++
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+
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jmp UseUniversal
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- jmp UseUniversal
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++
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;
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; Copy the boot sector from $0800 to the track/sector buffer
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@ -139,6 +142,15 @@ CheckT00S00
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jmp TheEnd
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.notencoded53
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;
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; Try to identify Electronic Arts bootloader.
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;
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.tryea
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jsr IDEA
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bcs .notea
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jmp foundea
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.notea
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.useuniv
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;
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; We didn't recognize the boot sector, so use the universal
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@ -73,6 +73,8 @@ PR0 = $FE89
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IN0 = $FE93
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; Zero-page addresses we use for variables
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!ifdef PASS2 {
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} else {
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nibsrcindex = $EC ; byte
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nibdestindex = $ED ; byte
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prbuf = $EE ; word
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@ -89,8 +91,11 @@ tmpa = $FC ; byte
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tmpx = $FD ; byte
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tmpy = $FE ; byte
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flag = $FF ; byte
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}
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; Application constants (not zero addresses)
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RELBASE = $6B00 ; address to move Passport code
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; so that it's out of the way
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BASEPAGE = $10 ; Special Delivery tracer assumes
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; this is $10, so don't change it!
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TRUE = $00 ; Lots of code assumes this is $00
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@ -98,21 +103,20 @@ TRUE = $00 ; Lots of code assumes this is $00
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; don't change it either!
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FALSE = $01
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FirstMover
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ldy #>LastMover-FirstMover
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ldx #$00
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FM lda $2000,x
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sta $6800,x
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FM lda FirstMover + ((255 + LastMover - FirstMover) & $FF00),x
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sta $B500,x
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inx
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bne FM
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inc FM+2
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inc FM+5
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dey
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cpy #$48
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dec FM+2
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dec FM+5
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lda FM+2
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cmp #$1F
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bne FM
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jmp OneTimeSetup
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!pseudopc *+$4800 {
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FirstMover
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!pseudopc RELBASE {
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!zone
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; use localized strings based on current language
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@ -143,6 +147,7 @@ FM lda $2000,x
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!source "id/specdelivery.a"
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!source "id/encode44.a"
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!source "id/encode53.a"
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!source "id/ea.a"
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!source "print.a"
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!source "compare.a"
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!source "modify.a"
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@ -408,10 +413,19 @@ checksector
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;
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.checksync
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jsr IsSyncBytes
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bcs .tryuniversal
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bcs .checktrack6
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lda #s_sync
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jsr PrintByID
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;
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; 4) track simply does not exist (Electronic Arts in particular)
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;
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.checktrack6
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jsr IsEATrack6
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bcs .tryuniversal
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lda #s_eatrk6
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jsr PrintByID
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; note: execution falls through here
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.skiptrack
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@ -710,6 +724,7 @@ _applyToAll
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!source "patchers/protecteddos.a"
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!source "patchers/fbff.a"
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!source "patchers/sierra.a"
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!source "patchers/ea.a"
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lda gPatchCount
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beq .nopatches
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@ -766,11 +781,19 @@ gIsProtDOS
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!byte FALSE ; 0=true, 1=false
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; set after reading T00
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gIsEA
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!byte FALSE ; 0=true, 1=false
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; set after reading T00
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gOnAClearDayYouCanReadForever
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!byte FALSE ; 0=true, 1=false
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; compile-time flag, no way to change at runtime
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!source "applyglobals.a"
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!source "universalrwts.a"
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LastMover
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}
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LastMover
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!if ($B500 - ((255 + LastMover - FirstMover) & $FF00)) != RELBASE {
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!serious "RELBASE requires adjustment to ", ($B500 - ((255 + LastMover - FirstMover) & $FF00))
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}
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205
src/patchers/ea.a
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205
src/patchers/ea.a
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@ -0,0 +1,205 @@
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;-------------------------------
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; #EA
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; patched RWTS and p-code madness
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;
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; module by qkumba
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;-------------------------------
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!zone {
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_ea
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lda gIsEA ; only ever seen this protection
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beq + ; on Electronic Arts titles
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jmp .dostitles
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+ ldy #40
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jsr SearchTrack
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!byte $8D,$6F,$BC,$8C,$70,$BC,$A0,$20
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!byte $88,$F0,$D7,$AD,$EC,$C0,$10,$FB
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!byte $49,$D5,$D0,$F4,$EA,$AD,$EC,$C0
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!byte $10,$FB,$C9,$BB,$D0,$F2,$EA,$AD
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!byte $EC,$C0,$10,$FB,$C9,$CF,$D0,$E8
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bcs +
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pha
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txa
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clc
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adc #27
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tax
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adc #10
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sta .patch2+1
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pla
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pha
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ldy #1
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jsr modify
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!byte $AA
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.patch2
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ldx #$D1
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pla
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ldy #1
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jsr modify
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!byte $AD
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+ ldy #13
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jsr SearchTrack
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!byte $03, $49 ;ldi #$05
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!byte $01, $03, $65 ;jsra $bc00
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!byte $01, $03, $79 ;jsra $a000
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!byte $03, $4C ;ldi #$00
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!byte $04, $EB, $19 ;lda $c0e8
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bcs +
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inx
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inx
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inx
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inx
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inx
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ldy #1
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jsr modify
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!byte $04
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+ ldy #15
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jsr SearchTrack
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!byte $BF,$9F,$BE,$F6,$04,$2E,$9B,$DA
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!byte $5A,$16,$DA,$30,$06,$45,$C2
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bcs +
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inx
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ldy #1
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jsr modify
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!byte $EE
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+ ldy #8
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jsr SearchTrack
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!byte $20,$10,$07,$A5,$56,$D0,$A7,$4C
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bcs +
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inx
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inx
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inx
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inx
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inx
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inx
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ldy #1
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jsr modify
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!byte $00
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+ ldy #15
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jsr SearchTrack
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!byte $03, $49 ;ldi #$05
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!byte $01, $03, $65 ;jsra $bc00
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!byte $03, $4C ;ldi #$00
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!byte $01, $03, $79 ;jsra $a000
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!byte $07, $01 ;sub #$4d
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!byte $0F, $F5, $70 ;bne $a9f6
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bcs +
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pha
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txa
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adc #7
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tax
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adc #4
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sta .patch3 + 1
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pla
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pha
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ldy #1
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jsr modify
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!byte $04
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pla
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.patch3
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ldx #$D1
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ldy #1
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jsr modify
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!byte $00
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+ ldy #13
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jsr SearchTrack
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!byte $4C,$E7,$B2,$4C,$74,$B3,$00,$00
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!byte $C9,$CB,$D0,$7C,$60
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bcs +
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pha
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txa
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adc #11
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tax
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pla
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ldy #1
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jsr modify
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!byte $00
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+ ldy #15
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jsr SearchTrack
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!byte $03,$49 ;ldi #$05
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!byte $01,$03,$65 ;jsr $BC00
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!byte $03,$4C ;ldi #$00
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!byte $01,$03,$6C ;jsr $B500
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!byte $07,$1C ;sub #$50
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!byte $0F,$78,$60 ;bne $B97B
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bcs +
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pha
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txa
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adc #11
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tax
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pla
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ldy #1
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jsr modify
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!byte $4C
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+ ldy #14
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jsr SearchTrack
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!byte $78,$20,$00,$D7,$C9,$4D,$F0,$06
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!byte $20,$67,$67,$20,$AA,$BF
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bcs +
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inx
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inx
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inx
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inx
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inx
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ldy #1
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jsr modify
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!byte $00
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+ ldy #12
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jsr SearchTrack
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!byte $20,$3E,$91,$20,$F3,$76,$20,$00
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!byte $61,$4C,$94,$69
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bcs +
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inx
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inx
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inx
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inx
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inx
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inx
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ldy #1
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jsr modify
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!byte $2C
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.dostitles
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ldy #23
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jsr SearchTrack
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!byte $09, $7A ;ldi #$00
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!byte $06, $7E, $A3 ;sta $0ee2
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!byte $08, $4D, $A1 ;jsra $0cd1
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!byte $08, $4D, $A1 ;jsra $0cd1
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!byte $08, $4D, $A1 ;jsra $0cd1
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!byte $08, $4D, $A1 ;jsra $0cd1
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!byte $07, $74, $6D ;lda $c0e8
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!byte $07, $7E, $A3 ;lda $0ee2
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bcs +
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pha
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txa
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adc #21
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tax
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pla
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ldy #1
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jsr modify
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!byte $7F
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+ ldy #13
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jsr SearchTrack
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!byte $A2,$04,$20,$4F,$1E,$20,$00,$A6
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!byte $A5,$48,$D0,$01,$60
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bcs +
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pha
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txa
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adc #11
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tax
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pla
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ldy #1
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jsr modify
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!byte $00
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+
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.exit
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}
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@ -84,7 +84,9 @@ s_specdel = $41
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s_bytrack = $42
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s_a5count = $43
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s_restart = $44
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STRINGCOUNT = $45
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s_eab0 = $45
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s_eatrk6 = $46
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STRINGCOUNT = $47
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!zone {
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StringTable
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@ -157,6 +159,8 @@ StringTable
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!word .bytrack
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!word .a5count
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!word .restart
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!word .eaboot0
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!word .eatrk6
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;
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; Text can contain substitution strings, which
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; are replaced by current values at runtime. Each
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@ -182,7 +186,7 @@ StringTable
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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 2017-01-27",00
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!text "Passport by 4am 2017-01-30",00
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.mainmenu
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!text "________________________________________",$8D,$8D,$8D,$8D,$8D,$8D,$8D
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!text " "
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@ -405,4 +409,8 @@ StringTable
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!text "T%t,S%0 Found A5 nibble count",$8D,$00
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.restart
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!text "Restarting scan",$8D,$00
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.eaboot0
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!text "T00 Found Electronic Arts bootloader",$8D,00
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.eatrk6
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!text "T06 Found EA protection track",$8D,00
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}
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