forked from KolibriOS/kolibrios
74 lines
1.6 KiB
PHP
74 lines
1.6 KiB
PHP
iglobal
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;function pointers.
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fdc_irq_func dd fdc_null
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endg
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uglobal
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dmasize db 0x0
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dmamode db 0x0
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endg
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fdc_init: ;start with clean tracks.
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mov edi,0xD201
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mov al,0
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mov ecx,160
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rep stosb
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ret
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fdc_filesave: ;ebx: cluster to be saved.
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pusha ;returns immediately. does not trigger a write.
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mov eax,ebx
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add eax,31
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mov bl,18
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div bl
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mov ah,0
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add eax,0xD201
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mov [eax],byte 1 ;This track is now dirty.
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popa
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ret
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fdc_irq:
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call [fdc_irq_func]
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fdc_null:
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ret
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save_image:
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call reserve_flp
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call restorefatchain
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pusha
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call check_label
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cmp [FDC_Status],0
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jne unnecessary_save_image
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mov [FDD_Track],0 ; Öèëèíäð
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mov [FDD_Head],0 ; Ñòîðîíà
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mov [FDD_Sector],1 ; Ñåêòîð
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mov esi,RAMDISK
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call SeekTrack
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save_image_1:
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push esi
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call take_data_from_application_1
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pop esi
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add esi,512
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call WriteSectWithRetr
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; call WriteSector
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cmp [FDC_Status],0
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jne unnecessary_save_image
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inc [FDD_Sector]
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cmp [FDD_Sector],19
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jne save_image_1
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mov [FDD_Sector],1
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inc [FDD_Head]
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cmp [FDD_Head],2
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jne save_image_1
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mov [FDD_Head],0
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inc [FDD_Track]
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call SeekTrack
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cmp [FDD_Track],80
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jne save_image_1
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unnecessary_save_image:
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mov [fdc_irq_func],fdc_null
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popa
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mov [flp_status],0
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ret
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