675 lines
12 KiB
ArmAsm
675 lines
12 KiB
ArmAsm
;license:MIT
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;(c) 2017-2018 by qkumba
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!cpu 6502
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!to "build/ONBEYONDZ3",plain
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*=$3000
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!macro version {!scrxor $80, "2/191025"}
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;user-defined options
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verbose_info = 0 ;set to 1 to enable display of memory usage
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gamename=$307
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savename=$350
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scrpname=$390
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;unpacker variables, no need to change these
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src = $0
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dst = $2
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ecx = $4
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last = $6
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tmp = $8
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ldy $2006
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lda #'3'
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sta gamename,y
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lda #'Z'
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sta gamename-1,y
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lda #'V'
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sta savename+1,y
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lda #'A'
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sta savename,y
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lda #'S'
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sta savename-1,y
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lda #'G'
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sta scrpname+1,y
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lda #'O'
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sta scrpname,y
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lda #'L'
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sta scrpname-1,y
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dey
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dey
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- lda $2006,y
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sta gamename,y
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sta savename,y
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sta scrpname,y
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dey
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bpl -
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inc savename
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inc scrpname
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lda #>pakoff
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sta src + 1
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lda #<pakoff
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sta src
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lda #$0d
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sta dst + 1
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lda #$7d
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sta dst
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jsr unpack
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;init interpreter
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jsr $d7d
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;copy new RWTS and interpreter support routines
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ldy #0
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- lda unrelochdd, y
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sta $c11, y
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iny
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bne -
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ldy #<(hddcodeend - $c11)
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- lda unrelochdd + $ff, y
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sta $d10, y
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dey
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bne -
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lda $bf30
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sta c5_parms+1
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lda $306
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eor $305
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eor $304
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eor $303
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eor $302
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eor $301
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eor $300
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eor #$a5
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beq +
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lda #$D9
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sta $300 ;80-cols
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ldx #1
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stx $301 ;lowercase
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dex
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stx $303 ;no script
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dex
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stx $302 ;no load
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+
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jsr $fe93
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ldx $300
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cpx #$ce
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beq skip80
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lda $bf98
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and #2
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bne okay80
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ldx #$ce
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skip80
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lda #$df
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sta mapmask+1
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okay80
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stx $1793
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lda $301
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beq +
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lda $bf98
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bpl +
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inc $17ba
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bne ++
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+
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lda #0
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sta $1267
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++
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lda $303
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beq +
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lda #<print
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sta $18ba
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lda #>print
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sta $18bb
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lda #<printer
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sta $1364
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lda #>printer
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sta $1365
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lda $304
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beq +
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lda #<callbackprn1
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sta $11de
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lda #>callbackprn1
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sta $11df
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+
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ldx $302
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inx
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beq +
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lda $11de
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sta loadcall1+1
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lda $11df
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sta loadcall2+1
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lda #<callback1
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sta $11de
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lda #>callback1
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sta $11df
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+
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lda #<brand
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sta $17eb
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lda #>brand
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sta $17ec
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lda #<savefile
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sta $d7d+$340
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lda #>savefile
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sta $d7d+$341
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lda #<loadfile
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sta $d7d+$3d2
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lda #>loadfile
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sta $d7d+$3d3
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lda #<closefile
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sta $d7d+$36c
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sta $d7d+$449
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lda #>closefile
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sta $d7d+$36d
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sta $d7d+$44a
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lda #$20
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sta $d7d+$76b
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lda #<casemap
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sta $d7d+$76c
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lda #>casemap
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sta $d7d+$76d
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lda #<quit
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sta $d7d+$709
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lda #>quit
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sta $d7d+$70a
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lda #<waitkey
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sta $d7d+$6fa
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lda #>waitkey
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sta $d7d+$6fb
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jsr closefile
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jmp $173d
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brand
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jsr $12f8
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lda #$f8
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sta $17eb
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lda #$12
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sta $17ec
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lda #$17
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sta $25
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lda #0
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sta $24
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sta $57b
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jsr $fc22
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lda #>brandtext
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ldx #<brandtext
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ldy #(brandtext_e-brandtext)
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jmp $12f8
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brandtext
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!text "On Beyond Z-Machine! revision "
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+version
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brandtext_e
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unrelochdd
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!pseudopc $c11 {
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ora #$ca
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sta pro_op
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lda #0
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sta ce_parms+2
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sta ce_parms+4
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sec
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lda $65
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adjust
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sbc #0
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asl
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asl
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asl
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rol ce_parms+4
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asl
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rol ce_parms+4
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ora $64
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sta ce_parms+3
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- jsr $bf00
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!byte $ce ;seek
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!word ce_parms
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bcc +
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jsr $bf00
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!byte $d0 ;set EOF
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!word ce_parms
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bcc -
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+
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jsr $bf00
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pro_op
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!byte $ca ;read file
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!word ca_parms
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bcs jmpquit
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- rts
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printer
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cmp #$8d
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bne -
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iny
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sty cb_parms+4
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dey
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lda #<scrpname
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sta c8_parms+1
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ldx #(<gamename xor <scrpname)
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jsr closefile1
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jsr $bf00
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!byte $d1
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!word ce_parms
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jsr $bf00
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!byte $ce
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!word ce_parms
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jsr $bf00
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!byte $cb
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!word cb_parms
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bcc closefile
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jmpquit
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jmp $dfe
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savefile
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jsr $bf00
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!byte $c0
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!word c0_parms
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lda $e5a
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sta c0_parms+5
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jsr $bf00
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!byte $c3
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!word c0_parms
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ldx #$e6
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!byte $2c
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loadfile
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ldx #$b8
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lda #$0d
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pha
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txa
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pha
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closefile
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ldx #(<gamename xor <savename)
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closefile1
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jsr xclose
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jsr xopen
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lda adjust+1
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eor #3
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sta adjust+1
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txa
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eor c8_parms+1
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sta c8_parms+1
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rts
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callback1
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lda xrestore,y
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cmp #$8d
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bne +
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ldx #<callback2
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stx $11de
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;!if #>callback1 != #>callback2 {
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; ldx #>callback2
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; stx $11df
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;}
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+ rts
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callback2
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lda $302
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ora #$b0
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ldx #<callback3
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stx $11de
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;!if #>callback2 != #>callback3 {
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; ldx #>callback3
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; stx $11df
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;}
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+ rts
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callback3
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lda #$D9
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loadcall1
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ldx #$0c
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stx $11de
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loadcall2
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ldx #$fd
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stx $11df
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rts
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xrestore
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!byte $d2,$c5,$d3,$d4,$cf,$d2,$c5,$8d
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callbackprn1
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lda xscript,y
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cmp #$8d
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bne +
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ldx #$0c
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stx $11de
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ldx #$fd
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stx $11df
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+ rts
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xscript
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!byte $d3,$c3,$d2,$c9,$d0,$d4,$8d
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print
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jsr $bf00
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!byte $c1
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!word c1_parms
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lda #<scrpname
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sta c0_parms+1
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jsr $bf00
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!byte $c0
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!word c0_parms
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inc $1363
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lda #<savename
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sta c0_parms+1
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rts
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xclose
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jsr $bf00
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!byte $cc
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!word cc_parms
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rts
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xopen
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jsr $bf00
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!byte $c8
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!word c8_parms
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lda c8_parms+5
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sta ce_parms+1
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sta ca_parms+1
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sta cb_parms+1
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rts
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casemap
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ldy $32
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bmi +
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cmp #$61
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bcc +
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cmp #$7b
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bcs +
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mapmask
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and #$ff
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+ sta $200,x
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- rts
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waitkey
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jsr $12f8
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lda $c010
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- lda $c000
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bpl -
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quit
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jsr xclose
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jsr $bf00
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!byte $c5
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!word c5_parms
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ldx $201
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inx
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txa
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and #$0f
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sta $200
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lda #$2f
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sta $201
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jsr $bf00
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!byte $c6
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!word c6_parms
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jsr $bf00
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!byte $65
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!word quit_parms
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c8_parms
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!byte 3
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!word gamename
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!word $800
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!byte 0
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c0_parms
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!byte 7
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!word savename
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!byte %11000011
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!byte 04
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!word 0
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cc_parms
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!byte 1
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!word 0
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!word 0
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ce_parms
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!byte 2
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!byte 0
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!byte 0
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!byte 0
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!byte 0
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ca_parms
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!byte 4
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!byte $ff
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!word $2900
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!word $100
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!word $ffff
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c1_parms
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c6_parms
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!byte 1
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!word scrpname
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c5_parms
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!byte 2
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!byte 0
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!word scrpname+1
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!byte $d1
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cb_parms
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quit_parms
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!byte 4
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!byte $ff
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!word $200
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!word $00ff
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!word $ffff
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hddcodeend
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}
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unpack ;unpacker entrypoint
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lda #0
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sta last
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sta ecx+1
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literal
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jsr getput
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ldy #2
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nexttag
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jsr getbit
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bcc literal
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jsr getbit
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bcc codepair
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jsr getbit
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bcs onebyte
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jsr getsrc
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lsr
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beq donedepacking
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ldx #0
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stx ecx
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rol ecx
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stx last+1
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tax
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bne domatch_with_2inc
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getbit
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asl last
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bne .stillbitsleft
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jsr getsrc
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sec
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rol
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sta last
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.stillbitsleft
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donedepacking
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rts
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onebyte
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ldy #0
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sty tmp+1
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iny
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sty ecx
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iny
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lda #$10
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.getmorebits
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pha
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jsr getbit
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pla
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rol
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bcc .getmorebits
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bne domatch
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jsr putdst
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linktag
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bne nexttag
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codepair
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jsr getgamma
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- jsr dececx
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dey
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bne -
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tay
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beq +
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normalcodepair
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dey
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sty last+1
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jsr getsrc
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tax
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!byte $a9
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+ iny
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jsr getgamma
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cpy #$7d
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bcs domatch_with_2inc
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cpy #5
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bcs domatch_with_inc
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txa
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bmi domatch_new_lastpos
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tya
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bne domatch_new_lastpos
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domatch_with_2inc
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clc
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!byte $24
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set_carry
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sec
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domatch_with_inc
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inc ecx
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bne test_carry
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inc ecx+1
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test_carry
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bcc set_carry
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domatch_new_lastpos
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domatch_lastpos
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ldy #1
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lda last+1
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sta tmp+1
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txa
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domatch
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sta tmp
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lda src+1
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pha
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lda src
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pha
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lda dst
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sec
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sbc tmp
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sta src
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lda dst+1
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sbc tmp+1
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sta src+1
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;;access1
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;; sta $c003
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- jsr getput
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jsr dececx
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ora ecx+1
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bne -
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;; sta $c002
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pla
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sta src
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pla
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sta src+1
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bne linktag
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getgamma
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lda #1
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sta ecx
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.getgammaloop
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jsr getbit
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rol ecx
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rol ecx+1
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jsr getbit
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bcs .getgammaloop
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rts
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dececx
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lda ecx
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bne +
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dec ecx+1
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+ dec ecx
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lda ecx
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rts
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getput
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jsr getsrc
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putdst
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sty tmp
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ldy #0
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sta (dst), y
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inc dst
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bne +
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inc dst+1
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bne +
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getsrc
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sty tmp
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ldy #0
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lda (src), y
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inc src
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bne +
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inc src+1
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+ ldy tmp
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rts
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!ifdef PASS2 {
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!if >callback1 != >callback2 {
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!if verbose_info = 1 {
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!warn "callbacks=", >callback1, >callback2
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} ;verbose_info
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}
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!if >callback2 != >callback3 {
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!if verbose_info = 1 {
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!warn "callbacks=", >callback2, >callback3
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} ;verbose_info
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}
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} else {
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!set PASS2=1
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}
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pakoff
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!bin "src/onbeyond/z3/0d7d-2739.pak"
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!byte $D3,$C1,$CE,$A0,$C9,$CE,$C3,$AE
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