#include "asmyt.h"
// __asm{
// PUBLIC C plzline, C setplzparas, C psini, C lsini4, C lsini16
//
// LABEL psini BYTE
// INCLUDE 'psini.inc'
// ;       db      16384 dup(?)
//
// LABEL lsini4 WORD
// INCLUDE 'lsini4.inc'
// ;       db      16384 dup(?)
//
// LABEL lsini16 WORD
// INCLUDE 'lsini16.inc'
// ;       db      16384 dup(?)
// }

word anSelfModifyOffsets[5*84];

//int ccc;

void lsini4_WriteWord(nIndex, nValue)
{
	word nByteOffset = lsini4_GetOffset() + (nIndex * 2);
	psini_WriteWord(nByteOffset, nValue);
}

void lsini16_WriteWord(word nIndex, word nValue)
{
	word nByteOffset = lsini16_GetOffset() + (nIndex * 2);
	psini_WriteWord(nByteOffset, nValue);
}

void anSelfModifyOffsets_WriteWord(word nOffset, word nValue)
{
	anSelfModifyOffsets[nOffset] = nValue;
}

word set_plzstart(word start)
{
__asm{
	mov	dx, 3d4h
	mov	al, 18h		; linecompare
	mov	ah, [Byte PTR start]
	out	dx, ax
	mov	al, 07h
	mov	ah, [Byte PTR start+1]
	shl	ah, 1d
	shl	ah, 1d
	shl	ah, 1d
	shl	ah, 1d
	and	ah, 10h
	or	ah, 0fh
	out	dx, ax			; 8th bit
}
	return start;
}
/*
int plzline(int y, int vseg)
{
	// vseg represented a segment, so multiply by sixteen (shift left by 4)
	// to convert into an offset.
	var nVgaYOffset = vseg * 16;

	var cccTable =
	[
		3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12,19,18,17,16,23,22,21,20,27,26,25,24,31,30,29,28,35,34,33,32,39,38,37,36,43,42,41,40,47,46,45,44,51,50,49,48,55,54,53,52,59,58,57,56,63,62,61,60,67,66,65,64,71,70,69,68,75,74,73,72,79,78,77,76,83,82,81,80
	];
	var nCount = 84;

	var ah = 0;
	var al = 0;
	var eax = 0;

	for (var nIndex = 0; nIndex < nCount; nIndex++)
	{
		var ccc = cccTable[nIndex];

		if ((ccc & 1) == 1)
		{
			var nByteOffset = 0;
			var bx = 0;

			nByteOffset = (y * 2) + anSelfModifyOffsets_ReadWord((2 * 84) + ccc);
			nByteOffset &= 0xFFFF;
			bx = psini_ReadWord(nByteOffset);

			nByteOffset = bx + anSelfModifyOffsets_ReadWord((1 * 84) + ccc);
			nByteOffset &= 0xFFFF;
			ah = psini_ReadByte(nByteOffset);

			nByteOffset = (y * 2) + anSelfModifyOffsets_ReadWord((4 * 84) + ccc);
			nByteOffset &= 0xFFFF;
			bx = psini_ReadWord(nByteOffset);

			nByteOffset = bx + (y * 2) + anSelfModifyOffsets_ReadWord((3 * 84) + ccc);
			nByteOffset &= 0xFFFF;
			ah += psini_ReadByte(nByteOffset);
			ah &= 0xFF;
		}
		else
		{
			var nByteOffset = 0;
			var bx = 0;

			nByteOffset = (y * 2) + anSelfModifyOffsets_ReadWord((2 * 84) + ccc);
			nByteOffset &= 0xFFFF;
			bx = psini_ReadWord(nByteOffset);

			nByteOffset = bx + anSelfModifyOffsets_ReadWord((1 * 84) + ccc);
			nByteOffset &= 0xFFFF;
			al = psini_ReadByte(nByteOffset);

			nByteOffset = (y * 2) + anSelfModifyOffsets_ReadWord((4 * 84) + ccc);
			nByteOffset &= 0xFFFF;
			bx = psini_ReadWord(nByteOffset);

			nByteOffset = bx + (y * 2) + anSelfModifyOffsets_ReadWord((3 * 84) + ccc);
			nByteOffset &= 0xFFFF;
			al += psini_ReadByte(nByteOffset);
			al &= 0xFF;
		}

		if ((ccc & 3) == 2)
		{
			eax = (ah << 8) | (al << 0);
			eax <<= 16;
		}

		if ((ccc & 3) == 0)
		{
			eax |= (ah << 8) | (al << 0);

			VGA_WriteDword(nVgaYOffset + ccc, eax);
		}
	}

	return 0;
}

*/
int setplzparas(int c1, int c2, int c3, int c4)
{
//	static word psini;
//	static word lsini4;
//	static word lsini16;
/*	__asm{
psini WORD .LABEL
'psini.inc' INCLUDE

lsini4 WORD .LABEL
'lsini4.inc' INCLUDE

lsini16 WORD .LABEL
'lsini16.inc' INCLUDE

		IRP ccc, <0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83>
		mov     ax, [c1]
		add     ax, OFFSET psini+ccc*8
		mov     [word (cs:lc1_&ccc)], ax
		mov     ax, [c2]
		shl     ax, 1d
		add     ax, OFFSET lsini16-ccc*8+80*8
		mov     [word (cs:lc2_&ccc)], ax
		mov     ax, [c3]
		add     ax, OFFSET psini-ccc*4+80*4
		mov     [word (cs:lc3_&ccc)], ax
		mov     ax, [c4]
		shl     ax, 1d
		add     ax, OFFSET lsini4+ccc*32
		mov     [word (cs:lc4_&ccc)], ax
		ENDM
		ret
	}*/
	word psiniOffset = 0;
	word lsini16Offset = lsini16_GetOffset();
	word lsini4Offset = lsini4_GetOffset();
	word ccc;
	word lc1, lc2, lc3, lc4;

	for (ccc=0; ccc < 84; ccc++)
	{
		word lc1 = c1 + psiniOffset + (ccc * 8);
		lc1 &= 0xFFFF;
		anSelfModifyOffsets_WriteWord((1 * 84) + ccc, lc1);

		lc2 = (c2 * 2) + lsini16Offset - (ccc * 8) + (80 * 8);
		lc2 &= 0xFFFF;
		anSelfModifyOffsets_WriteWord((2 * 84) + ccc, lc2);

		lc3 = c3 + psiniOffset - (ccc * 4) + (80 * 4);
		lc3 &= 0xFFFF;
		anSelfModifyOffsets_WriteWord((3 * 84) + ccc, lc3);

		lc4 = (c4 * 2) + lsini4Offset + (ccc * 32);
		lc4 &= 0xFFFF;
		anSelfModifyOffsets_WriteWord((4 * 84) + ccc, lc4);
	}
	return 0;
}