pc98.h

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/*
 * PROJECT:     ReactOS Boot Video Driver for NEC PC-98 series
 * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
 * PURPOSE:     Arch-specific header file
 * COPYRIGHT:   Copyright 2020 Dmitry Borisov <di.sean@protonmail.com>
 */
 
#pragma once
 
/* GLOBALS ********************************************************************/
 
#define FB_OFFSET(x, y)    ((y) * SCREEN_WIDTH + (x))
 
extern ULONG_PTR FrameBuffer;
 
/* FUNCTIONS ******************************************************************/
 
VOID
InitPaletteWithTable(
    _In_reads_(Count) const ULONG* Table,
    _In_ ULONG Count);
 
#define PrepareForSetPixel()
 
FORCEINLINE
VOID
SetPixel(
    _In_ ULONG Left,
    _In_ ULONG Top,
    _In_ UCHAR Color)
{
    PUCHAR PixelPosition = (PUCHAR)(FrameBuffer + FB_OFFSET(Left, Top));
 
    WRITE_REGISTER_UCHAR(PixelPosition, Color);
}