File-Manager/MOD0/LISTDRV.ASM

;-------------------------------------------------
; ˆ­¨æ. ᯨ᮪ ⨯®¢ ¤¨áª®¢ á¨á⥬ë
; (¯®á«¥¤. ç¨â ¥â BPB ª ¦¤®£® ¤¨áª )
;-------------------------------------------------
init_list_types_drives:
	ld	a,(disk)		; ¤¨áª  ªâ. ¯ ­¥«¨
	ld	c,1			; ãáâ. ¤¨áª
	rst	10h
	jr	nc,init_list_types_drv1
	; ¨á¯. ­®¬¥à boot-¤¨áª 
	ld	bc,0009h
	rst	10h
	ld	(disk),a
	; 㧭 âì ­®¬¥à ¯®á«. ¤¨áª  ¢ á¨á⥬¥
	ld	c,1			; ãáâ. ¤¨áª
	rst	10h
init_list_types_drv1:
	ld	(lastdrive),a		; ¯®á«¥¤. ¤¨áª ¢ á¨á⥬¥ (0..25)
	cp	1+1
	jr	c,init_list_types_done	; ⮫쪮 A,B ¤¨áª¨
	dec	a
	ld	b,a
	ld	c,2			; ­ ç âì á "C:"
	ld	hl,scan_code_letters+5	; â ¡«¨æ  ¤¨áª®¢ á "C:"
make_dlist_loop:
	push	bc
	push	hl
	; ¯à®ç¨â âì BPB ¤¨áª 
	push	bc
	ld	a,c			; ­®¬¥à ¤¨áª 
	ld	c,1			; open device
	rst	18h
	pop	bc
	jr	c,make_dlist_err
	push	bc
	ld	a,c
	ld	de,work_buffer		; ¡ãä¥à
	ld	c,4			; get BPB
	rst	18h
	pop	bc
	jr	c,make_dlist_err
	ld	a,c			; ­®¬¥à ¤¨áª 
	ld	c,2			; close device
	rst	18h
	pop	hl
	pop	bc
	ld	a,(work_buffer+21)	; ¡ ©â ä®à¬ â  ­®á¨â¥«ï
	ld	(hl),a
	inc	hl
	inc	hl			; á«¥¤. ï祩ª  ⨯  ¤¨áª 
	inc	c			; ++­®¬¥à ¤¨áª 
	djnz	make_dlist_loop
init_list_types_done:
	; â¥áâ ­  ¤®áâ㯭®áâì ¤¨áª  ã ¯ áá. ¯ ­¥«¨
	ld	hl,disk1
	ld	a,(lastdrive)
	dec	a
	cp	(hl)
	ret	nc
	ld	(hl),a
	ret
	;
make_dlist_err:
	pop	hl
	pop	bc
	jr	init_list_types_done





;----------------------------------------------------------------------
; ‘âàãªâãà  á¯¨áª  ¬¥­î ¢ë¡®à  ¤¨áª®¢
; <­®¬¥à ¯ã­ªâ >, <¨¬ï ¯ã­ªâ ,0>, <᪥­-ª®¤ ¡ãª¢ë>, <­®¬¥à ª®­â¥ªáâ >
;----------------------------------------------------------------------
;	db	0,"&A: removable",0
;	db	1Dh			; ᪥­-ª®¤
;	db	CTnodef			; ª®­â¥ªáâ (­¥ ¨á¯.)
;	;
;	db	1,"&B: removable",0
;	db	2Eh
;	db	CTnodef
;	;
;	db	2,"&C: fixed",0
;	db	2Ch			; ᪥­-ª®¤
;	db	CTnodef
;	;
;	db	3,"&D: CD-ROM",0
;	db	1Fh
;	db	CTnodef
;	;
;	db	4,"&E: RAM-disk",0
;	db	12h
;	db	CTnodef
;	;
;	db	-1			; ª®­¥æ ®¯¨á â¥«ï


;-------------------------------------------------
; ‘®§¤ âì ¢ ¡ãä¥à¥ áâàãªâãàã ᯨ᪠ ¤¨áª®¢
;-------------------------------------------------
make_struct_drives:
	exx
	ld	hl,scan_code_letters	; ᯨ᮪ ᪥­-ª®¤®¢ ¡ãª¢
	exx
	ld	a,(lastdrive)
	ld	b,a
	ld	c,0			; A=0
	ld	hl,work_buffer
make_drives_loop:
	ld	(hl),c			; ­®¬¥à ¤¨áª  (ª®¬ ­¤ë)
	inc	hl
	ld	(hl),"&"
	inc	hl
	ld	a,"A"
	add	a,c
	ld	(hl),a
	inc	hl
	ld	(hl),":"
	inc	hl
	ld	(hl)," "
	inc	hl
	exx
	ld	a,(hl)			; ᪥­-ª®¤
	ex	af,af'
	inc	hl
	ld	a,(hl)			; ⨯ ¤¨áª 
	inc	hl
	exx
	ld	de,fix_drive		; ¢¨­â
	cp	0F8h
	jr	z,make_drives_type
	ld	de,ram_drive		; ram-¤¨áª
	cp	0FAh
	jr	z,make_drives_type
	ld	de,rem_drive		; ¤¨áª¥â 
	cp	0F0h			; 1.44Mb
	jr	z,make_drives__
	cp	0F9h			; 720kB
	jr	z,make_drives__
	ld	de,cd_drive		; cd-rom
	jr	make_drives_type
make_drives__:
	ld	a,c
	cp	2			; ¬¥­ìè¥ "C:" ?
	jr	c,make_drives_type
	ld	de,ram_drive		; ram-¤¨áª
make_drives_type:
	; ᪮¯¨à. ⨯ ¤¨áª 
	ld	a,(de)
	ld	(hl),a
	inc	hl
	inc	de
	or	a
	jr	nz,$-5
	ex	af,af'
	ld	(hl),a			; ᪥­-ª®¤
	inc	hl
	inc	hl			; ¯à®©â¨ ª®­â¥ªáâ
	inc	c			; ++­®¬¥à ¤¨áª 
	djnz	make_drives_loop
	ld	(hl),-1			; ª®­¥æ ᯨ᪠
	; ­ áâநâì Y ¯®«®¦. ¬¥­î ®â ç¨á«  ¤¨áª®¢
	ld	c,5			; Y ¯®«®¦. ¬¥­î
	ld	a,(lastdrive)		; 0..25
	cp	14+1
	jr	c,$+9
	dec	c
	cp	18+1
	jr	c,$+4
	ld	c,2
	ld	a,c
	ld	(table_left_drive+1),a
	ld	(table_right_drive+1),a
	ret



; ’ ¡«¨æ  ¡ãª¢ ¤¨áª®¢
; <᪥­-ª®¤>, <¡ ©â ä®à¬ â  ¤¨áª >
scan_code_letters:
	db	1Dh,0F0h		; A
	db	2Eh,0F0h		; B
	db	2Ch,0F8h		; C
	db	1Fh,0F8h		; D
	db	12h,0F8h		; E
	db	20h,0F8h		; F
	db	21h,0F8h		; G
	db	22h,0F8h		; H
	db	17h,0F8h		; I
	db	23h,0F8h		; J
	db	24h,0F8h		; K
	db	25h,0F8h		; L
	db	30h,0F8h		; M
	db	2Fh,0F8h		; N
	db	18h,0F8h		; O
	db	19h,0F8h		; P
	db	10h,0F8h		; Q
	db	13h,0F8h		; R
	db	1Eh,0F8h		; S
	db	14h,0F8h		; T
	db	16h,0F8h		; U
	db	2Dh,0F8h		; V
	db	11h,0F8h		; W
	db	2Bh,0F8h		; X
	db	15h,0F8h		; Y
	db	2Ah,0F8h		; Z