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Rev 1635 Rev 2010
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	; print one dot
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	; print one dot
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	push	bx
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	push	bx
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	mov	ax,0e2eh			; ah=0eh (teletype), al='.'
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	mov	ax,0e2eh			; ah=0eh (teletype), al='.'
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	xor	bh,bh
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	xor	bh,bh
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	int	10h
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	int	10h
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	pop	bx
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- 
 
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writesec:
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	; convert cluster number to sector number
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	; convert cluster number to sector number
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	mov	ax,bp				; data cluster to read
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	mov	ax,bp				; data cluster to read
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	sub	ax,2
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	sub	ax,2
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	xor	bx,bx
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	xor	dx,dx
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	mov	bl,byte [BPB_SecPerClus+boot_program]
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	mov	dl,byte [BPB_SecPerClus+boot_program]
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	mul	bx
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	mul	dx
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	add	ax,word [data_start+boot_program]
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	pop	bx
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	add	ax,word [data_start+boot_program]
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writesec:
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	call	conv_abs_to_THS			; convert abs sector (AX) to BIOS T:H:S (track:head:sector)
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	call	conv_abs_to_THS			; convert abs sector (AX) to BIOS T:H:S (track:head:sector)
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patchhere:
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patchhere:
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	mov	ah,2				; ah=2 (read)
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	mov	ah,2				; ah=2 (read)
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;
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;
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write1st:
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write1st:
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	push	cs
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	push	cs
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	pop	ds
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	pop	ds
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	mov	byte [patchhere+1+boot_program], 3	; change ah=2 to ah=3
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	mov	byte [patchhere+1+boot_program], 3	; change ah=2 to ah=3
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	mov	ax,[cluster1st+boot_program]
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	mov	bp,[cluster1st+boot_program]
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	push	1000h
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	push	1000h
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	pop	es
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	pop	es
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	xor	bx,bx
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	xor	bx,bx
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	call	writesec
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	call	writesec
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	mov	byte [patchhere+1+boot_program], 2	; change back ah=3 to ah=2
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	mov	byte [patchhere+1+boot_program], 2	; change back ah=3 to ah=2