kolibrios/kernel/trunk/blkdev/fdc.inc

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;;
;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;;
;; Distributed under terms of the GNU General Public License ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
uglobal
dmasize db 0x0
dmamode db 0x0
endg
fdc_init: ;start with clean tracks.
mov edi, OS_BASE+0xD201
mov al, 0
mov ecx, 160
rep stosb
ret
save_image:
cmp [ramdisk_actual_size], FLOPPY_CAPACITY
jnz .fail
pusha
mov ecx, floppy_mutex
call mutex_lock
mov [flp_number], bl
call floppy_read_bootsector
cmp [FDC_Status], 0
jne .unnecessary_save_image
mov [FDD_Track], 0; Цилиндр
mov [FDD_Head], 0; Сторона
mov [FDD_Sector], 1; Сектор
mov esi, RAMDISK
call SeekTrack
.save_image_1:
call take_data_from_application_1
call WriteSectWithRetr
; call WriteSector
cmp [FDC_Status], 0
jne .unnecessary_save_image
inc [FDD_Sector]
cmp [FDD_Sector], 19
jne .save_image_1
mov [FDD_Sector], 1
inc [FDD_Head]
cmp [FDD_Head], 2
jne .save_image_1
mov [FDD_Head], 0
inc [FDD_Track]
call SeekTrack
cmp [FDD_Track], 80
jne .save_image_1
.unnecessary_save_image:
cmp [FDC_Status], 0
pushf
mov ecx, floppy_mutex
call mutex_unlock
popf
popa
jnz .fail
xor eax, eax
ret
.fail:
movi eax, 1
ret