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Rev 1519 Rev 1521
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macro allocate_and_clear dest, size, err {
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macro allocate_and_clear dest, size, err {
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; We need to allocate at least 8 pages, if we want a continuous memory in ram
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; We need to allocate at least 8 pages, if we want a continuous memory in ram
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	push	edx
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    if (size < 8*4096) & (size > 4096)
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    if (size < 8*4096) & (size > 4096)
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	stdcall KernelAlloc, 8*4096
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	stdcall KernelAlloc, 8*4096
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    else
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	stdcall KernelAlloc, size
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    else
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    end if
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	stdcall KernelAlloc, size
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	pop	edx
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    end if
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	test	eax, eax
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	test	eax, eax
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	jz	err
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	jz	err
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	mov	dest, eax		; Save the address to it into the device struct
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	mov	dest, eax		; Save the address to it into the device struct
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	mov	edi, eax		; look at last part of code!
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	mov	edi, eax		; look at last part of code!
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; Release the unused pages (if any)
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; Release the unused pages (if any)
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    if (size < 8*4096) & (size > 4096)
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	add	eax, (size/4096+1)*4096
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    if (size < 8*4096) & (size > 4096)
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	mov	ecx, 8-(size/4096+1)
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	add	eax, (size/4096+1)*4096
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	push	edx
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	mov	ecx, 8-(size/4096+1)
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	call	ReleasePages
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	call	ReleasePages
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	pop	edx