1089 lines
21 KiB
ArmAsm
1089 lines
21 KiB
ArmAsm
;license:MIT
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;(c) 2018 by qkumba
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!cpu 6502
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!to "build/zinfo5",plain
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*=$3000
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save_name = $2006
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read_buffer = $2e00 ;512 bytes
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info_buffer = $2000 ;record_size*8, 600 ($258) bytes
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zpage_info = $fe ;word
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zpage_ptr = $fd
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zpage_gamind = $fc
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name_offset = 0 ;1+37 bytes, a zero-length name is an empty record
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time_offset = 42 ;1+8 bytes ("12:01 pm")
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score_offset = 51 ;1+6 bytes (-12345)
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moves_offset = 58 ;1+5 bytes (12345)
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date_offset = 64 ;1+10 bytes ("10/10/2099")
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record_size = 75 ;bytes
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;zpage used by Infocom code
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byte_FE52= $52
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byte_FE53= $53
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zp_58 = $58
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zp_59 = $59
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zp_5A = $5a
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zp_5B = $5b
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zp_6B = $6b
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zp_6C = $6c
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zp_6D = $6d
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zp_6E = $6e
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zp_7B = $7b
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zp_7C = $7c
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zp_7D = $7d
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zp_7E = $7e
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zp_7F = $7f
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zp_80 = $80
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zp_84 = $84
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zp_85 = $85
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zp_87 = $87
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zp_88 = $88
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zp_8A = $8a
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zp_8B = $8b
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zp_A0 = $a0
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zp_A1 = $a1
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zp_A9 = $a9
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zp_AA = $aa
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zp_AB = $ab
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zp_AC = $ac
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zp_AD = $ad
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zp_AE = $ae
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zp_AF = $af
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zp_C9 = $c9
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zp_CA = $ca
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zp_CD = $cd
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zp_CE = $ce
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zp_CF = $cf
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zp_D0 = $d0
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zp_D1 = $d1
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zp_D2 = $d2
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zp_D3 = $d3
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zp_D4 = $d4
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jsr exchange
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jsr $bf00
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!byte $c8 ;open file
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!word c8_parms
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lda c8_handle
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sta ce_handle
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sta ca_handle
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lda #>info_buffer
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sta zpage_info+1
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lda #<info_buffer
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sta zpage_info
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zero_info
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ldy #name_offset
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sty zpage_ptr
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tya
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sta (zpage_info),y
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clc
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lda zpage_info
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adc #record_size
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sta zpage_info
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bcc +
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inc zpage_info+1
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+ inc index+1
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index
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lda #0
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cmp #8
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bcc zero_info
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lda #0
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sta zpage_gamind
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lda #<gamelist
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sta zpage_info
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lda #>gamelist
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sta zpage_info+1
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--- ldy #0
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lda (zpage_info),y
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beq close
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+ pha
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cmp $2006
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beq +
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-- inc zpage_gamind
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pla
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sec
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adc zpage_info
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sta zpage_info
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bcc ---
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inc zpage_info+1
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bne ---
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+ tay
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- lda $2006,y
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cmp (zpage_info),y
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bne --
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dey
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bne -
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pla
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lda #>info_buffer
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sta zpage_info+1
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lda #<info_buffer
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sta zpage_info
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;position to file offset
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fetch_info
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lda #0
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sta ce_offset+2
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position
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ldx #0
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beq ++
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- clc
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adc #$b8
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bcc +
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inc ce_offset+2
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+ dex
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bne -
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++ clc
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adc #5
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sta ce_offset+1
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sta ce_base1+1
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bcc +
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inc ce_offset+2
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+ lda ce_offset+2
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sta ce_base2+1
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jsr seekread
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bcs nextpos
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ldy #name_offset
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sty zpage_ptr
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jsr dump_info
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nextpos
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clc
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lda zpage_info
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adc #record_size
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sta zpage_info
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bcc +
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inc zpage_info+1
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+ inc position+1
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lda position+1
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cmp #3
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bcc fetch_info
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close
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jsr $bf00
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!byte $cc ;close file
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!word cc_parms
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quit
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lda $bf30
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sta c5_parms+1
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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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exchange
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ldx #(zp_D4-byte_FE52)
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- ldy zpage_old-1,x
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lda byte_FE52-1,x
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sty byte_FE52-1,x
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sta zpage_old-1,x
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dex
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bne -
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rts
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load_page
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ldx zp_80
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cpx zp_A1
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bne +
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cmp zp_A0
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beq seek_ret
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+ stx zp_A1
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sta zp_A0
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clc
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ce_base1
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adc #0
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sta ce_offset+1
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txa
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ce_base2
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adc #0
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sta ce_offset+2
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seekread
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jsr $bf00
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!byte $ce ;seek
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!word ce_parms
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bcs seek_ret
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jsr $bf00
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!byte $ca ;read file
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!word ca_parms
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seek_ret
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rts
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c8_parms
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!byte 3
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!word save_name
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!word $1C00
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c8_handle
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!byte 0
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ce_parms
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!byte 2
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ce_handle
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!byte 0
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ce_offset
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!byte 0,0,0
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ca_parms
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!byte 4
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ca_handle
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!byte 0
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ca_offset
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!word read_buffer
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ca_size
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!word $200
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!word $ffff
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cc_parms
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c6_parms
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!byte 1
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!byte 0
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c5_parms
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!byte 2
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!byte 0
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!word $201
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!byte $d1
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dump_info
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tsx
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stx stack_pointer+1
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;set up pointers for decompression and "score" display
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lda #0
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sta zp_7E
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sta zp_80
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sta zp_A0
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sta zp_A1
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lda read_buffer+$0d
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sta zp_84
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lda read_buffer+$0c
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sta zp_85
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lda read_buffer+$19
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sta zp_87
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lda read_buffer+$18
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sta zp_88
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lda read_buffer+$0b
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sta zp_8A
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lda read_buffer+$0a
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sta zp_8B
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;dump info, actual Infocom code in upper-case
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lda #42
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sta max_chars
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ldx zpage_gamind
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lda gameloc, x
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JSR fetch_obj
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lda zp_6B
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ora zp_6C
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bne +
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rts
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+ LDA zp_6B
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LDX zp_6C
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JSR decompress
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lda zpage_ptr
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ldy #name_offset
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sta (zpage_info),y
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ldy #time_offset
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sty zpage_ptr
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lda #0
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sta max_chars ;can't overflow anymore
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sta (zpage_info),y
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ldx zpage_gamind
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lda gametime, x
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beq branch_skip
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jsr fetch_obj
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lda zp_6B
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sta zp_58
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lda zp_6C
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sta zp_59
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ldx zpage_gamind
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beq bzone
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cpx #3
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beq branch_print
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cpx #4
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beq sherlock1
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cpx #5
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beq sherlock1
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cpx #6
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beq wishbr
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branch_skip
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jmp skip_time
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branch_print
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jmp print_time
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sherlock1
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ldy zp_6B
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iny
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sty zp_6D
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lda zp_6C
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sta zp_6E
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ldy #0
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jsr fetch_obj+3
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lda zp_6C
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pha
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lda #0
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pha
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lda zp_6B
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sta zp_58
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lda #0
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sta zp_59
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jmp print_hhmm
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wishbr
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lda zp_6B
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pha
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lda zp_6C
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pha
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lda #$5c
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jsr fetch_obj
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lda zp_6B
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cmp #$0d
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bcc +
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sbc #$0c
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+ sta zp_58
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lda zp_6C
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sta zp_59
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jmp print_hhmm
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bzone
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lda #$3c
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sta zp_5A
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lda #0
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sta zp_5B
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jsr sub_E7E1
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stx zp_58
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sta zp_59
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lda #$74
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jsr fetch_obj
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clc
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lda zp_6B
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adc zp_58
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sta zp_58
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lda zp_6C
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adc zp_59
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sta zp_59
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jsr sub_E7E1
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stx zp_58
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sta zp_59
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lda zp_CF
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pha
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lda zp_D0
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pha
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lda #$67
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jsr fetch_obj
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clc
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lda zp_6B
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adc zp_58
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sta zp_58
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lda zp_6C
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adc zp_59
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sta zp_59
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lda zp_58
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cmp #$18
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bcc print_hhmm
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sbc #$18
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sta zp_58
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lda #'0'
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jsr emit_char
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print_hhmm
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jsr loc_EA1C
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lda #':'
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jsr emit_char
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pla
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sta zp_59
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pla
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sta zp_58
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cmp #$0a
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bcs print_time
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lda #'0'
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jsr emit_char
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print_time
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jsr loc_EA1C
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ldx zpage_gamind
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cpx #4
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bcc +
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cpx #7
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bcs +
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lda zp_6B
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cmp #$0c
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lda #'a'
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bcc print_ampm
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lda #'p'
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print_ampm
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jsr emit_char
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lda #'m'
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jsr emit_char
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+ sec
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lda zpage_ptr
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sbc #time_offset
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ldy #time_offset
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sta (zpage_info),y
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skip_time
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ldy #score_offset
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sty zpage_ptr
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lda #0
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sta (zpage_info),y
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ldx zpage_gamind
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lda gamescore, x
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beq skip_score
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jsr fetch_obj
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lda zp_6B
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sta zp_58
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lda zp_6C
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sta zp_59
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jsr loc_EA1C
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sec
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lda zpage_ptr
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sbc #score_offset
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ldy #score_offset
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sta (zpage_info),y
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skip_score
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ldy #moves_offset
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sty zpage_ptr
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lda #0
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sta (zpage_info),y
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ldx zpage_gamind
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lda gamemoves, x
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beq skip_moves
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jsr fetch_obj
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lda zp_6B
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sta zp_58
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lda zp_6C
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sta zp_59
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jsr loc_EA1C
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sec
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lda zpage_ptr
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sbc #moves_offset
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ldy #moves_offset
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sta (zpage_info),y
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skip_moves
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ldy #date_offset
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sty zpage_ptr
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lda #0
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sta (zpage_info),y
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ldx zpage_gamind
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lda gameday, x
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beq skip_date
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jsr fetch_obj
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lda zp_6B
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sta zp_58
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lda zp_6C
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sta zp_59
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ldx zpage_gamind
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cpx #6
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beq +
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ldy zp_6B
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iny
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iny
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iny
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sty zp_6D
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lda zp_6C
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sta zp_6E
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ldy #0
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jsr fetch_obj+3
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sec
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lda zp_6C
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sbc #$0c
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sta zp_58
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lda zp_6B
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sta zp_59
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lda #7
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sta zp_5A
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lda #0
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sta zp_5B
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jsr sub_E7E1
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ldx zp_CF
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lda day_index, x
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sta day_load+1
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day_load
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lda day_table
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beq ++
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jsr emit_char
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inc day_load+1
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bne day_load
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+ jsr loc_EA1C
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++ sec
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lda zpage_ptr
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sbc #date_offset
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ldy #date_offset
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sta (zpage_info),y
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skip_date
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rts
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!source "src/zinfo/z5/gamedata.txt"
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day_index
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!byte <sun, <mon, <tue, <wed, <thu, <fri, <sat
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day_table
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sun !text "Sunday", 0
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mon !text "Monday", 0
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tue !text "Tuesday", 0
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wed !text "Wednesday", 0
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thu !text "Thursday", 0
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fri !text "Friday", 0
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sat !text "Saturday", 0
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fetch_obj:
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JSR sub_E1D9
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lda zp_6E
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pha
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jsr load_page
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lda #>read_buffer
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sta zp_6E
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LDA (zp_6D),Y
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STA zp_6C
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INY
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LDA (zp_6D),Y
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STA zp_6B
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pla
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sta zp_6E
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RTS
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sub_E1D9:
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SEC
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SBC #$10
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LDY #0
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STY zp_6E
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ASL
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ROL zp_6E
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CLC
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ADC zp_84
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STA zp_6D
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LDA zp_6E
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ADC zp_85
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STA zp_6E
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locret_E1EE:
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RTS
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decompress
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JSR sub_F58D
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LDY #$C
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jsr load_page
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lda #>read_buffer
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sta zp_6E
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LDA (zp_6D),Y
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TAX
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INY
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LDA (zp_6D),Y
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STA zp_6D
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STX zp_6E
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INC zp_6D
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BNE loc_E4C4
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INC zp_6E
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loc_E4C4:
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JSR sub_F0B9
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JMP sub_F35C
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sub_E7E1:
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JSR sub_E7F5
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LDX zp_CD
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LDA zp_CE
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rts
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sub_E7F5:
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LDA zp_59
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STA zp_D2
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EOR zp_5B
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STA zp_D1
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LDA zp_58
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STA zp_CD
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LDA zp_59
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STA zp_CE
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BPL loc_E80A
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JSR sub_E833
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|
|
loc_E80A:
|
|
LDA zp_5A
|
|
STA zp_CF
|
|
LDA zp_5B
|
|
STA zp_D0
|
|
BPL loc_E817
|
|
JSR sub_E825
|
|
|
|
loc_E817:
|
|
JSR sub_E841
|
|
LDA zp_D1
|
|
BPL loc_E821
|
|
JSR sub_E833
|
|
|
|
loc_E821:
|
|
LDA zp_D2
|
|
BPL locret_E832
|
|
|
|
sub_E825:
|
|
LDA #0
|
|
SEC
|
|
SBC zp_CF
|
|
STA zp_CF
|
|
LDA #0
|
|
SBC zp_D0
|
|
STA zp_D0
|
|
|
|
locret_E832:
|
|
RTS
|
|
|
|
sub_E833:
|
|
LDA #0
|
|
SEC
|
|
SBC zp_CD
|
|
STA zp_CD
|
|
LDA #0
|
|
SBC zp_CE
|
|
STA zp_CE
|
|
RTS
|
|
|
|
sub_E841:
|
|
JSR sub_E87F
|
|
|
|
loc_E84A:
|
|
ROL zp_CD
|
|
ROL zp_CE
|
|
ROL byte_FE52
|
|
ROL byte_FE53
|
|
LDA byte_FE52
|
|
SEC
|
|
SBC zp_CF
|
|
TAY
|
|
LDA byte_FE53
|
|
SBC zp_D0
|
|
BCC loc_E868
|
|
STY byte_FE52
|
|
STA byte_FE53
|
|
|
|
loc_E868:
|
|
DEX
|
|
BNE loc_E84A
|
|
ROL zp_CD
|
|
ROL zp_CE
|
|
LDA byte_FE52
|
|
STA zp_CF
|
|
LDA byte_FE53
|
|
STA zp_D0
|
|
RTS
|
|
|
|
sub_E87F:
|
|
LDX #$10
|
|
LDA #0
|
|
STA byte_FE52
|
|
STA byte_FE53
|
|
CLC
|
|
RTS
|
|
|
|
loc_EA1C:
|
|
LDA zp_58
|
|
STA zp_CD
|
|
LDA zp_59
|
|
STA zp_CE
|
|
LDA zp_CE
|
|
BPL loc_EA30
|
|
LDA #$2D
|
|
JSR emit_char
|
|
JSR sub_E833
|
|
|
|
loc_EA30:
|
|
LDA #0
|
|
STA zp_D3
|
|
|
|
loc_EA34:
|
|
LDA zp_CD
|
|
ORA zp_CE
|
|
BEQ loc_EA4C
|
|
LDA #$A
|
|
STA zp_CF
|
|
LDA #0
|
|
STA zp_D0
|
|
JSR sub_E841
|
|
LDA zp_CF
|
|
PHA
|
|
INC zp_D3
|
|
BNE loc_EA34
|
|
|
|
loc_EA4C:
|
|
LDA zp_D3
|
|
BNE loc_EA55
|
|
LDA #$30
|
|
JMP emit_char
|
|
|
|
loc_EA55:
|
|
PLA
|
|
CLC
|
|
ADC #$30
|
|
JSR emit_char
|
|
DEC zp_D3
|
|
BNE loc_EA55
|
|
RTS
|
|
|
|
sub_F0B9:
|
|
LDA zp_6D
|
|
STA zp_7B
|
|
LDA zp_6E
|
|
STA zp_7C
|
|
LDA #0
|
|
STA zp_7D
|
|
JMP sub_F15E
|
|
|
|
sub_F15E:
|
|
ldy zp_7D
|
|
LDA zp_7C
|
|
STY zp_80
|
|
STA zp_7F
|
|
RTS
|
|
|
|
sub_F301:
|
|
PHA
|
|
INC zp_7C
|
|
BNE loc_F308
|
|
INC zp_7D
|
|
|
|
loc_F308:
|
|
JSR sub_F15E
|
|
PLA
|
|
RTS
|
|
|
|
sub_F319:
|
|
LDY zp_7B
|
|
lda zp_7F
|
|
pha
|
|
jsr load_page
|
|
lda #>read_buffer
|
|
sta zp_7F
|
|
LDA (zp_7E),Y
|
|
INC zp_7B
|
|
BNE loc_F32C
|
|
JSR sub_F301
|
|
|
|
loc_F32C:
|
|
TAY
|
|
pla
|
|
sta zp_7F
|
|
tya
|
|
RTS
|
|
|
|
sub_F343:
|
|
LDA zp_6D
|
|
ASL
|
|
STA zp_7B
|
|
LDA zp_6E
|
|
ROL
|
|
STA zp_7C
|
|
LDA #0
|
|
ROL
|
|
STA zp_7D
|
|
ASL zp_7B
|
|
ROL zp_7C
|
|
ROL zp_7D
|
|
JMP sub_F15E
|
|
|
|
locret_F35B:
|
|
RTS
|
|
|
|
sub_F35C:
|
|
LDX #0
|
|
STX zp_A9
|
|
STX zp_AD
|
|
DEX
|
|
STX zp_AA
|
|
|
|
loc_F365:
|
|
JSR sub_F442
|
|
BCS locret_F35B
|
|
STA zp_AB
|
|
TAX
|
|
BEQ loc_F3B0
|
|
CMP #4
|
|
BCC loc_F3CE
|
|
CMP #6
|
|
BCC loc_F3B4
|
|
JSR sub_F424
|
|
TAX
|
|
BNE loc_F388
|
|
LDA #$5B
|
|
|
|
loc_F37F:
|
|
CLC
|
|
ADC zp_AB
|
|
|
|
loc_F382:
|
|
JSR emit_char
|
|
JMP loc_F365
|
|
|
|
loc_F388:
|
|
CMP #1
|
|
BNE loc_F390
|
|
LDA #$3B
|
|
BNE loc_F37F
|
|
|
|
loc_F390:
|
|
LDA zp_AB
|
|
SEC
|
|
SBC #6
|
|
BEQ loc_F39E
|
|
TAX
|
|
LDA byte_F573,X
|
|
JMP loc_F382
|
|
|
|
loc_F39E:
|
|
JSR sub_F442
|
|
ASL
|
|
ASL
|
|
ASL
|
|
ASL
|
|
ASL
|
|
STA zp_AB
|
|
JSR sub_F442
|
|
ORA zp_AB
|
|
JMP loc_F382
|
|
|
|
loc_F3B0:
|
|
LDA #$20
|
|
BNE loc_F382
|
|
|
|
loc_F3B4:
|
|
SEC
|
|
SBC #3
|
|
TAY
|
|
JSR sub_F424
|
|
BNE loc_F3C2
|
|
STY zp_AA
|
|
JMP loc_F365
|
|
|
|
loc_F3C2:
|
|
STY zp_A9
|
|
CMP zp_A9
|
|
BEQ loc_F365
|
|
LDA #0
|
|
STA zp_A9
|
|
BEQ loc_F365
|
|
|
|
loc_F3CE:
|
|
SEC
|
|
SBC #1
|
|
ASL
|
|
ASL
|
|
ASL
|
|
ASL
|
|
ASL
|
|
ASL
|
|
STA zp_AC
|
|
JSR sub_F442
|
|
ASL
|
|
CLC
|
|
ADC zp_AC
|
|
TAY
|
|
lda zp_88
|
|
pha
|
|
jsr load_page
|
|
lda #>read_buffer
|
|
sta zp_88
|
|
LDA (zp_87),Y
|
|
STA zp_6E
|
|
INY
|
|
LDA (zp_87),Y
|
|
STA zp_6D
|
|
pla
|
|
sta zp_88
|
|
LDA zp_7D
|
|
PHA
|
|
LDA zp_7C
|
|
PHA
|
|
LDA zp_7B
|
|
PHA
|
|
LDA zp_A9
|
|
PHA
|
|
LDA zp_AD
|
|
PHA
|
|
LDA zp_AF
|
|
PHA
|
|
LDA zp_AE
|
|
PHA
|
|
JSR sub_F430
|
|
JSR sub_F35C
|
|
PLA
|
|
STA zp_AE
|
|
PLA
|
|
STA zp_AF
|
|
PLA
|
|
STA zp_AD
|
|
PLA
|
|
STA zp_A9
|
|
PLA
|
|
STA zp_7B
|
|
PLA
|
|
STA zp_7C
|
|
PLA
|
|
STA zp_7D
|
|
LDX #$FF
|
|
STX zp_AA
|
|
JSR sub_F15E
|
|
JMP loc_F365
|
|
|
|
sub_F424:
|
|
LDA zp_AA
|
|
BPL loc_F42B
|
|
LDA zp_A9
|
|
RTS
|
|
|
|
loc_F42B:
|
|
LDY #$FF
|
|
STY zp_AA
|
|
RTS
|
|
|
|
sub_F430:
|
|
LDA zp_6D
|
|
ASL
|
|
STA zp_7B
|
|
LDA zp_6E
|
|
ROL
|
|
STA zp_7C
|
|
LDA #0
|
|
ROL
|
|
STA zp_7D
|
|
JMP sub_F15E
|
|
|
|
sub_F442:
|
|
LDA zp_AD
|
|
BPL loc_F448
|
|
SEC
|
|
RTS
|
|
|
|
loc_F448:
|
|
BNE loc_F45D
|
|
INC zp_AD
|
|
JSR sub_F319
|
|
STA zp_AF
|
|
JSR sub_F319
|
|
STA zp_AE
|
|
LDA zp_AF
|
|
LSR
|
|
LSR
|
|
JMP loc_F486
|
|
|
|
loc_F45D:
|
|
SEC
|
|
SBC #1
|
|
BNE loc_F478
|
|
LDA #2
|
|
STA zp_AD
|
|
LDA zp_AE
|
|
STA zp_6D
|
|
LDA zp_AF
|
|
ASL zp_6D
|
|
ROL
|
|
ASL zp_6D
|
|
ROL
|
|
ASL zp_6D
|
|
ROL
|
|
JMP loc_F486
|
|
|
|
loc_F478:
|
|
LDA #0
|
|
STA zp_AD
|
|
LDA zp_AF
|
|
BPL loc_F484
|
|
LDA #$FF
|
|
STA zp_AD
|
|
|
|
loc_F484:
|
|
LDA zp_AE
|
|
|
|
loc_F486:
|
|
AND #$1F
|
|
CLC
|
|
RTS
|
|
|
|
byte_F573:
|
|
!BYTE 0, $D, '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', ',', '!', '?', '_'
|
|
!BYTE '#', $27, '"', '/', $5C, '-', ':', '(', ')'
|
|
|
|
sub_F58D:
|
|
STX zp_6E
|
|
ASL
|
|
STA zp_6D
|
|
ROL zp_6E
|
|
LDX zp_6E
|
|
ASL
|
|
ROL zp_6E
|
|
ASL
|
|
ROL zp_6E
|
|
ASL
|
|
ROL zp_6E
|
|
SEC
|
|
SBC zp_6D
|
|
STA zp_6D
|
|
LDA zp_6E
|
|
STX zp_6E
|
|
SBC zp_6E
|
|
STA zp_6E
|
|
LDA zp_6D
|
|
CLC
|
|
ADC #$70
|
|
BCC loc_F5B5
|
|
INC zp_6E
|
|
|
|
loc_F5B5:
|
|
CLC
|
|
ADC zp_8A
|
|
STA zp_6D
|
|
LDA zp_6E
|
|
ADC zp_8B
|
|
STA zp_6E
|
|
RTS
|
|
|
|
emit_char
|
|
sty yreg+1
|
|
inc zpage_ptr
|
|
ldy zpage_ptr
|
|
sta (zpage_info),y
|
|
dec max_chars
|
|
beq fail_slot
|
|
yreg
|
|
ldy #0
|
|
rts
|
|
|
|
fail_slot
|
|
stack_pointer
|
|
ldx #0
|
|
txs
|
|
rts
|
|
|
|
max_chars !byte 0
|
|
|
|
zpage_old
|