Estex-DSS/SHELL/Commands/DIR.ASM
2023-11-25 08:26:45 +10:00

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;///////////////////////////////////////////////////
;
; DIR. ‚뢮¤ ᯨ᪠ ä ©«®¢ ¨ ¯ ¯®ª
;
;///////////////////////////////////////////////////
cmd_dir:
push de
;;;; [ ] ¯®¤¤¥à¦ª  ¯ à ¬¥â஢
; § ­ã«ï¥¬ ¢á¥ ¯ à ¬¥âàë ­  áâ àâ¥
xor a
ld (read_disk_info.full),a
; ¢ë¯®«­ï¥¬/­ áâà ¨¢ ¥¬ ¢á¥ ­ ©¤¥­­ë¥ ¯ à ¬¥âàë ¢ áâப¥
ld hl,cmd_dir_options
LD C,256-3 ;!HARDCODE ¤«¨­  áâப¨ á ª®¬ ­¤®©
.parse: call RUN_OPTION
jr nc,.skip
jp (hl)
;
.skip: ld c,Dss.CurDisk ; ã§­ âì ⥪. ¤¨áª
RST ToDSS
ADD A,"A"
ld (root_path),a ; ­®¬¥à ¤¨áª 
SUB "A"
call read_disk_info ; ¯à®ç¨â âì ¬¥âªã ¨ á¥à¨©­ë© ­®¬¥à ¤¨áª 
;
pop de
ld a,#ff
ld (.key_p),a
ld hl,0
ld (D88DC),hl
ld (D88DE),hl
ld (D88E0),hl
ld (dir_number),hl
ex de,hl
ld de,work_buffer1 ; 80
ld c,Dss.GSwitch ; ¢ë¤¥«¨âì ¯ à ¬¥âà ª®¬-áâப¨
RST ToDSS
;
ld a,(work_buffer1)
or a
jr nz,1F ; § ¤ ­  ¬ áª  ¨¬¥­
;
ld hl,mask_fname ; "*.*"
ld de,work_buffer1
call copy_string
; [ ] 1/10/23
1: ld hl,work_buffer1 ; ¨¬ï ä ©« 
ld de,work_buffer1 ; 80 ¡ãä¥à
ld a,#37 ;  âਡãâ (¢á¥, ªà®¬¥ ¬¥âª¨ ⮬ )
ld bc,0*256 + Dss.F_First ; f_first (ä®à¬ â 11)
RST ToDSS
JR C,.dir_empty ;R14
CALL .Print_Header
;
LD A,32-5 ; ª®«¨ç¥á⢮ áâப ¤® ®¦¨¤ ­¨ï ª« ¢¨è¨ (á ¢ëç¥â®¬ § £®«®¢ª ) ;!HARDCODE
PUSH AF
; 横« ¢ë¢®¤  ᯨ᪠ ä ©«®¢/¯ ¯®ª
.loop: POP AF
.key_p+1: and #ff
dec a
jr nz,.skip_wait
ld de,MAIN_MSG.PAUSE
call MESSAGE ; ¢ë¢¥á⨠áâபã
ld c,Dss.WaitKey
rst ToDSS
ld a,32-1
.skip_wait:
PUSH AF
;
ld hl,work_buffer1+33 ; 80
;push af
;ld de,33
;add hl,de
call A88E2
;
ld ix,work_buffer1 ; 80
ld a,(ix+32) ;  âਡãâ ⥪. § ¯¨á¨
and FAT_ATTR.DIRECTORY ; ¯ ¯ª  ?
jr z,.calc_size ; ­¥â
; áç¨â ¥¬ ¯ ¯ª¨
; ­¥ áç¨â ¥¬ ¯ ¯ª®© á«ã¦¥¡­ë¥ "." ¨ ".."
ld d,(ix+33)
ld e,(ix+34)
ld hl,-('..')
add hl,de
ld a,h
or l
jr z,.next
ld hl,-('. ')
add hl,de
ld a,h
or l
jr z,.next
; 㢥«¨ç¨¢ ¥¬ áçñâ稪 ¯ ¯®ª
ld hl,(dir_number)
inc hl
ld (dir_number),hl
jr .next
;;R14
.dir_empty:
push af
CALL .Print_Header
pop af
CALL print_err_message
jr .print
;;R14
; ¯à¨¡ ¢¨âì à §¬¥à ⥪. ä ©« 
.calc_size:
ld hl,(D88DC)
inc hl
ld (D88DC),hl
ld e,(ix+30)
ld d,(ix+31)
ld hl,(D88E0)
exx
ld e,(ix+28)
ld d,(ix+29)
ld hl,(D88DE)
add hl,de
exx
adc hl,de
exx
ld (D88DE),hl
exx
ld (D88E0),hl
.next: ld de,work_buffer1 ; 80 ¡ãä¥à
ld c,Dss.F_Next ; ¯®¨áª á«¥¤.
RST ToDSS
jr nc,.loop ; ­ § ¤ ¢ 横«, ¥á«¨ ­¥ ª®­¥æ ᯨ᪠
pop af ; «¨è­¥¥
; „¥áïâ¨ç­ë© ¢ë¢®¤
.print: ld hl,(D88DC)
ld ix,PRM1 ; ¡ãä¥à
call A8964
;
ld hl,(D88DE) ; ¬«. à §àï¤
exx
ld hl,(D88E0) ; áâ. à §àï¤
exx
;
;;;;;;;;;;;;;
; call A8A8F ; ¤¥áïâ¨ç­ë© 32-å à §àï¤­ë© ¢ë¢®¤
; ld hl,T8B37 ; "0"
; ld a,(hl)
; cp " "
; jr nz,.not_zero
; ld a,"0"
; ld (hl),a
; .not_zero:
; ld de,T8B46 ; "0 000 000 000"
; ld hl,T8B2E ; "0000000000"
; ld a,(hl)
; ldi
; cp " "
; jr z,1F
; ld a,"," ; à §¤. à §à冷¢
; 1: ld (de),a
; inc de
; ldi
; ldi
; ld a,(hl)
; ldi
; cp " "
; jr z,1F
; ld a,"," ; à §¤. à §à冷¢
; 1: ld (de),a
; inc de
; ldi
; ldi
; ld a,(hl)
; ldi
; cp " "
; jr z,1F
; ld a,"," ; à §¤. à §à冷¢
; 1: ld (de),a
; inc de
; ldi
; ldi
; ldi
; ret
CALL Size2Char
;;;;;;;;;;;;;
;
; [ ] ¢ë¢®¤ ª®«¨ç¥á⢠ ¯ ¯®ª
; [ ] ¢ë¢®¤ ®¡é¥£® ª®«¨ç¥á⢠ ᢮¡®¤­®£® ¬¥áâ 
ld hl,T8B46 ; "0 000 000 000"
ld de,PRM2 ; ªã¤ 
call ncopy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬), ¬ ªá.15 ᨬ¢.
;
;!TEST
;ld hl,(dir_number)
;ld de,PRM3
;call hex2dec_ascii_16bit.n10000
; „¥áïâ¨ç­ë© ¢ë¢®¤
ld hl,(dir_number)
ld ix,PRM3 ; ¡ãä¥à
call A8964
;xor a
;ld (de),a
;
;
LD A,(read_disk_info.full)
OR A
ld hl,has_not_full_info
JR Z,.skip_full_space
;
ld hl,(free_space) ; ¬«. à §àï¤
exx
ld hl,(free_space+2) ; áâ. à §àï¤
exx
CALL Size2Char
ld hl,T8B46 ; "0 000 000 000"
;
.skip_full_space:
ld de,PRM4 ; ªã¤ 
call ncopy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬), ¬ ªá.15 ᨬ¢.
;
;
ld de,MAIN_MSG.DIR_2 ; ¨­¤¥ªá " %1 file(s) %2 bytes"
jp MESSAGE ; ¢ë¢¥á⨠áâபã
.Print_Header:
; %1
ld a,(screen_path) ; ¤¨áª
ld hl,PRM1
ld (hl),a
inc hl
ld (hl),":"
inc hl
ld (hl),0
; %2
ld hl,serial_string ; áâப  á¥à¨©­®£® ­®¬¥à  ¤¨áª 
ld de,PRM2 ; ªã¤ 
call ncopy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬)
; %3
ld hl,screen_path
ld de,PRM3 ; 16 ¡ãä¥à
CALL copy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬)
;
ld de,MAIN_MSG.DIR_1 ; ¨­¤¥ªá "Volume in drive %1..." ;!HARDCODE ­®¬¥à áâப¨ MSG0
JP MESSAGE ; ¢ë¢¥á⨠áâபã
;
;
; <20>®¤£®â®¢¨âì áâபã ᯨ᪠ ä ©«®¢/¯ ¯®ª
A88E2: ld bc,8
ld de,PRM1 ; ¡ãä¥à
ldir
xor a
ld (de),a
ld de,PRM2 ; ªã¤ 
ldi
ldi
ldi
ld (de),a
ld ix,work_buffer1
call A89A4 ; ¢ë¢¥á⨠¢ ¡ãä¥à ¨¬ï ä ©«  ¨ ¥£® à §¬¥à (ã ¯ ¯ª¨ <DIR>)
call A89FA ; ¢ë¢¥á⨠¢ ¡ãä¥à ¤ âã ä ©« /¯ ¯ª¨
call A8A19 ; ¢ë¢¥á⨠¢ ¡ãä¥à ¢à¥¬ï ä ©« /¯ ¯ª¨
ld de,MAIN_MSG.DIR_3 ; ¨­¤¥ªá "%1 %2 %3 %4 %5"
jp MESSAGE ; ¢ë¢®¤ áâப¨
; ‚뢥á⨠¢ ¡ãä¥à ¨¬ï ä ©«  ¨ ¥£® à §¬¥à (ã ¯ ¯ª¨ <DIR>)
A89A4: ld a,(ix+32)
ld hl,T8B38 ; "<DIR> "
and 10h ; ¯ ¯ª  ?
jr nz,A89F4 ; ¤ 
ld l,(ix+28) ; ¬«. à §àï¤
ld h,(ix+29)
exx
ld l,(ix+30) ; áâ. à §àï¤
ld h,(ix+31)
exx
push ix
call A8A8F ; ¤¥áïâ¨ç­ë© 32-å à §àï¤­ë© ¢ë¢®¤
ld hl,T8B37
ld a,(hl)
cp " "
jr nz,A89CD
ld a,"0"
ld (hl),a
A89CD: ld de,T8B46 ; "0 000 000 000"
ld hl,T8B2E ; "0000000000"
ldi
ld a," "
ld (de),a
inc de
ldi
ldi
ldi
ld (de),a
inc de
ldi
ldi
ldi
ld (de),a
inc de
ldi
ldi
ldi
ld hl,T8B46 ; "0 000 000 000"
pop ix
A89F4: ld de,PRM3 ; 16 ¡ãä¥à
jp ncopy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬), ¬ ªá.15 ᨬ¢.
; ‘ª®¯¨à®¢ âì ¢ ¡ãä¥à ¤ âã ä ©« /¯ ¯ª¨
A89FA: ld b,(ix+25)
ld c,(ix+24)
ld hl,T8B46 ; "0 000 000 000"
call A8A53 ; ¢ë¢®¤ ¢ ¡ãä¥à ¤ âë
ld (hl),0
ld hl,T8B46 ; "0 000 000 000"
ld de,PRM4 ; 16 ªã¤ 
ld a,(hl)
cp "0"
jr nz,$+4
ld (hl)," "
jp ncopy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬), ¬ ªá.15 ᨬ¢.
; ‘ª®¯¨à®¢ âì ¢ ¡ãä¥à ¢à¥¬ï ä ©« /¯ ¯ª¨
A8A19: ld b,(ix+22)
ld c,(ix+23)
ld hl,T8B46 ; "0 000 000 000"
call A8A38 ; ᪮¯¨à. ¢ ¡ãä¥à ¢à¥¬ï ä ©« /¯ ¯ª¨
ld (hl),0
ld hl,T8B46 ; "0 000 000 000"
ld de,PRM5 ; 80 ¡ãä¥à áâப¨
ld a,(hl)
cp "0"
jr nz,$+4
ld (hl)," "
jp ncopy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬), ¬ ªá.15 ᨬ¢.
; ¢ ¡ãä¥à ¢à¥¬ï ä ©« /¯ ¯ª¨
A8A38: srl c
rr b
srl c
rr b
srl c
rr b
srl b
srl b
ld a,c
call A8A7E
ld (hl),":" ; à §¤¥«. ¢à¥¬¥­¨
inc hl
ld a,b
jr A8A7E
; ¢ ¡ãä¥à ¤ âã ä ©« /¯ ¯ª¨
A8A53: ld a,c
and 1Fh
push bc
call A8A7E
ld (hl),"." ; à §¤¥«. ¤ âë
inc hl
pop bc
ld a,c
srl b
rla
rla
rla
rla
and 0Fh
call A8A7E
ld (hl),"." ; à §¤¥«. ¤ âë
inc hl
ld a,b
add a,80
cp 100
jr c,A8A7E
A8A75: sub 100
cp 100
jr nc,A8A75
A8A7E: ld c,2Fh
inc c
sub 10
jr nc,$-3
add a,10
add a,"0"
ld (hl),c
inc hl
ld (hl),a
inc hl
ret
;!TODO ¯¥à¥â é¨âì ¢ procedures/math.asm
; „¥áïâ¨ç­ë© 32-å à §àï¤­ë© ¢ë¢®¤
A8A8F: ld ix,T8B2E ; "0000000000"
exx
ld de,3B9Ah
exx
ld de,0CA00h
call A8B15 ; 1,000,000,000
exx
ld de,05F5h
exx
ld de,0E100h
call A8B15 ; 100,000,000...999,999,999
exx
ld de,98h
exx
ld de,9680h
call A8B15 ; 10,000,000...99,999,999
exx
ld de,0Fh
exx
ld de,4240h
call A8B15 ; 1,000,000...9,999,999
exx
ld de,1
exx
ld de,86A0h
call A8B15 ; 100,000...999,999
exx
ld de,0
exx
ld de,10000
call A8B15 ; 10,000...99,999
exx
ld de,0
exx
ld de,1000
call A8B15 ; 1,000...9,999
exx
ld de,0
exx
ld de,100
call A8B15 ; 100..999
exx
ld de,0
exx
ld de,10
call A8B15 ; 10..99
ld a,l
add a,"0"
ld (ix+0),a
inc ix
ld hl,T8B2E ; "0000000000"
ld de,2030h ; " ","0"
A8B04: ld a,(hl)
cp e
jr nz,A8B0D
ld (hl),d
inc hl
jr A8B04
;
A8B0D: ld hl,T8B37 ; "0"
ld a,(hl)
cp d
ret nz
ld (hl),e
ret
A8B15: xor a
A8B16: inc a
sbc hl,de
exx
sbc hl,de
exx
jp nc,A8B16
add hl,de
exx
adc hl,de
exx
dec a
add a,"0"
ld (ix+0),a
inc ix
ret
;
D88DC: dw 0
D88DE: dw 0
D88E0: dw 0
dir_number: dw 0
free_space: dword 0
;
T8B2E: db "000000000"
T8B37: db "0"
T8B38: db "<DIR> ",0
T8B46: db "0 000 000 000",0
db 0
;
; [ ] ⥯¥àì ­¥ «¥§¥â ­ ¯àï¬ãî, ¤¥« ¥â ç¥à¥§ ­®¢ë© ¯ à ¬¥âà ä㭪樨 DskInfo
; ¨­ ï «®£¨ª  ¯®«ã祭¨ï ¬¥âª¨ ⮬  - á­ ç «  ¨é¥âáï ¢ ª®à­¥¢®© ¤¨à¥ªâ®à¨¨,
; ¥á«¨ â ¬ ­¥â, â® ¡¥àñâáï ¨§ BPB
read_disk_info:
OR #80
LD HL,work_buffer
.full+1: LD B,0
LD C,Dss.DskInfo
RST ToDSS
; ” ©«®¢ ï á¨á⥬ 
; ‘¥à¨©­ë© ­®¬¥à ¤¨áª 
; Œ¥âª  ¤¨áª  ¢ BPB
EX AF,AF'
LD A,(.full)
OR A
JR Z,.no_full_space_option
;
; (DE*A)*BC
;PUSH HL ; ®¡é¥¥ ª®«-¢® ª« áâ¥à®¢
;PUSH DE ; ᢮¡®¤­ëå ª« áâ¥à®¢
PUSH BC ; à §¬¥à ᥪâ®à  ¢ ¡ ©â å
EX AF,AF'
LD C,A ; A - à §¬¥à ª« áâ¥à  ¢ ᥪâ®à å
CALL Mult16X8
; A:HL = DE*A
;
EX DE,HL
LD H,0
LD L,A
POP BC
CALL Mult32
LD (free_space+2),HL
EX DE,HL
LD (free_space),HL
;
;
.no_full_space_option:
; parse
LD D,0
LD HL,work_buffer
; âãâ ¢ HL ¤«¨­  ¯®«ï "” ©«®¢ ï á¨á⥬ "
LD E,(HL)
ADD HL,DE
INC HL
; ¤«¨­  ¯®«ï "‘¥à¨©­ë© ­®¬¥à ¤¨áª "
LD A,(HL)
LD E,A
ADD HL,DE
INC HL
PUSH HL ; 㪠§ â¥«ì ­  ¤«¨­ã ¯®«ï "Œ¥âª  ¤¨áª "
CP 4 ;!HARDCODE ¤«¨­  ¯®«ï á¥à¨©­®£® ­®¬¥à 
JR NZ,unknown_serial
DEC HL
; áâ à襥 á«®¢® á¥à¨©­¨ª 
LD D,(HL)
DEC HL
LD E,(HL)
DEC HL
PUSH HL
EX DE,HL
ld de,serial_string ; xxxx-xxxx
call hex16
POP HL
;
ld a,"-"
ld (de),a
INC DE
; ¬« ¤è¥¥ á«®¢® á¥à¨©­¨ª 
LD A,(HL)
DEC HL
LD L,(HL)
LD H,A
call hex16
;
; Œ¥âª  ¤¨áª 
; ld a,(disk) ; ­®¬¥à ¤¨áª 
; cp 2 ; ¬¥­ìè¥ "C:" ?
; jr nc,get_inf_data1 ; ¬¥âª  ¢ BPB
.get_label:
; ¨é¥¬ ¬¥âªã ¢ ª®à­¥ ”‘ à §¤¥« 
; ãáâ. ª®à¥­ì ¤¨áª 
ld hl,root_path ; "x:\",0
ld c,Dss.ChDir
RST ToDSS
; ¯®¨áª ¬¥âª¨
ld hl,mask_fname ; "*.*" ¨¬ï ¬¥âª¨
ld de,work_buffer1 ; ªã¤ 
ld a,FAT_ATTR.VOLUME_ID ;  âਡãâ ¬¥âª¨ ⮬ 
ld bc,0*256 + Dss.F_First ; f_first, ä®à¬ â 11
RST ToDSS
push af
call restore_path ; ¢®ááâ. ⥪. ¯ãâì
pop af
;jr c,no_volume_label ; ¬¥âª¨ ­¥â ¤¨à४â®à¨¨
ld hl,work_buffer1+33 ; ­ ç «® ¬¥âª¨ ¢ ¡ãä¥à¥ f_first
jr nc,volume_label ; ¬¥âª  ¢ ª®à­¥¢®¬ ª â «®£¥
; ¡¥àñ¬ ¬¥âªã ¨§ BPB
; âãâ ¢ HL ¤«¨­  ¯®«ï "Œ¥âª  ¤¨áª "
POP hl
LD A,(HL)
INC HL
AND A
jr z,.no_volume_label ; ¤ 
PUSH HL
LD B,A
LD A,' '
;
.loop: CP (HL)
JR NZ,.good_label
INC HL
DJNZ .loop
POP HL ; á­¨¬ ¥¬ «¨è­¥¥
; ­¥â ¬¥âª¨
.no_volume_label:
; %4
ld hl,volume_string_no ; áâப 
ld de,PRM4 ; ªã¤ 
call ncopy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬)
XOR A
LD (PRM5),A
ret
.good_label:
POP HL
PUSH HL ; «¨è­¥¥
;!FIXIT ᤥ« âì ç¥à¥§  à£ã¬¥­âë %1-%9
; ¥áâì ¬¥âª 
volume_label:
pop DE ; «¨è­¥¥
; %5
ld de,PRM5
ld bc,11 ;!HARDCODE ¤«¨­  ¬¥âª¨
ldir
xor a
ld (de),a
; %4
ld hl,volume_string_yes ; áâப 
ld de,PRM4 ; ªã¤ 
call ncopy_string ; ᪮¯¨à. áâபã (á ­ã«¥¬)
ret
;
; ¥á«¨ ­¥ 㤠«®áì ¯à®ç¨â âì á¥à¨©­ë© ­®¬¥à ¤¨áª  ¨«¨ ä®à¬ â ­¥¨§¢¥á⥭
unknown_serial:
; á¥à¨©­ë© ­®¬¥à ¤¨áª  - ­¥¨§¢¥á⥭ ;!HARDCODE ­¨¦¥
LD HL,serial_string
LD A,'?'
LD B,serial_string.Size
.loop: LD (HL),A
INC HL
DJNZ .loop
LD HL,serial_string+4
LD (HL),'-'
;POP HL ; «¨è­¥¥
JP read_disk_info.get_label
;
; ¬ áª  ä ©«®¢
mask_fname:
db "*.*",0
; ª®à¥­ì ¤¨áª 
root_path:
db 'X:\',0
; ‘¥à¨©­ë© ­®¬¥à ¤¨áª 
serial_string:
db "xxxx-xxxx"
.Size equ $-serial_string
db 0 ; § ªà뢠誠
volume_string_no:
db "has no label",0
volume_string_yes:
db "has label",0
has_not_full_info:
db ' (?)',0
;
cmd_dir_options:
; [ ] ¯ à ¬¥âà /F - ¢ë¢®¤ ª®«¨ç¥á⢠ ᢮¡®¤­®£® ¬¥áâ  ­  ¤¨áª¥ (â®à¬®§¨â, ¯®í⮬㠯 à ¬¥â஬)
DB 'f' : DW cmd_dir_freeSpace
;DB 'p' : DW cmd_dir_pause
.Size EQU ($-cmd_dir_options)/3
.paramLength equ 3
;
;
cmd_dir_freeSpace:
PUSH DE
PUSH BC
; § â¨à ¥¬ ­ ©¤¥­ë© ª«îç
ld A,'/'
ex de,hl
ld bc,4
CPDR
inc hl
ld (hl),' '
inc hl
ld (hl),' '
; áâ ¢¨¬ ®¯æ¨î ¤«ï API DSS DskInfo
ld a,1
ld (read_disk_info.full),a
; ¢ë¢®¤¨¬ áâப㠮 à áçñ⥠᢮¡®¤­®£® ¬¥áâ  â ª, ç⮡ ®­  § âñà« áì
LD DE,MAIN_MSG.CALCULATING
CALL MESSAGE
; ¢®§¢à é ¥¬áï ¢ 横«
POP BC
POP DE
jp cmd_dir.parse
;
; cmd_dir_pause:
; xor a
; ld (cmd_dir.key_p),a
; jp cmd_dir.parse
///////////////////////////////////////////////////////////////////////////////////////
Size2Char:
call A8A8F ; ¤¥áïâ¨ç­ë© 32-å à §àï¤­ë© ¢ë¢®¤
ld hl,T8B37 ; "0"
ld a,(hl)
cp " "
jr nz,.not_zero
ld a,"0"
ld (hl),a
.not_zero:
ld de,T8B46 ; "0 000 000 000"
ld hl,T8B2E ; "0000000000"
ld a,(hl)
ldi
cp " "
jr z,1F
ld a,"," ; à §¤. à §à冷¢
1: ld (de),a
inc de
ldi
ldi
ld a,(hl)
ldi
cp " "
jr z,1F
ld a,"," ; à §¤. à §à冷¢
1: ld (de),a
inc de
ldi
ldi
ld a,(hl)
ldi
cp " "
jr z,1F
ld a,"," ; à §¤. à §à冷¢
1: ld (de),a
inc de
ldi
ldi
ldi
ret
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
;----------------------------------------------------------------------;
;<3B>à®æ¥¤ãà  ã¬­®¦¥­¨ï (16*8bit)
;<3B>  ¢å®¤: DE*C
;<3B>  ¢ë室:A+HL-१ã«ìâ â
Mult16X8:
SUB A
LD L,A
LD H,A
CP C
RET Z
OR D
OR E
RET Z
LD A,C
LD C,#00
LD B,#08
Mlt16x8:
ADD HL,HL
RLA
JR NC,1F
ADD HL,DE
ADC A,C
1: DJNZ Mlt16x8
RET
;----------------------------------------------------------------------;
;----------------------------------------------------------------------;
;<3B>à®æ¥¤ãà  ã¬­®¦¥­¨ï (32bit)
;<3B>  ¢å®¤: HL+DE*BC
;<3B>  ¢ë室:HL+DE-१ã«ìâ â
Mult32:
PUSH IX
LD IX,#0000
LD A,#20
EX DE,HL
mul32b:
ADD IX,IX
ADC HL,HL
RL E
RL D
JR NC,noadd1
ADD IX,BC
JR NC,noadd1
INC HL
noadd1:
DEC A
JR NZ,mul32b
LD E,LX
LD D,HX
POP IX
RET
;----------------------------------------------------------------------;
///////////////////////////////////////////////////////////////////////////////////////