int __fastcall__ setmarks(int mousex, unsigned char mousey, unsigned char firstspr){
	register unsigned char* sprkor = (char*)&VIC.spr0_x+(unsigned char)(firstspr << 1);
	
/*The following two lines are the important ones!*/

	*sprkor = sprkor[2] = sprkor[4] = sprkor[6] = (unsigned char)mousex&255;
	sprkor[1] = sprkor[3] = sprkor[5] = sprkor[7] = mousey;

	if (mousex>255) VIC.spr_hi_x = VIC.spr_hi_x | marksprpots[firstspr];
	else VIC.spr_hi_x = VIC.spr_hi_x & (!marksprpots[firstspr]);
}

000006r 1               ; ---------------------------------------------------------------
000006r 1               ; int __fastcall__ setmarks (int, unsigned char, unsigned char)
000006r 1               ; ---------------------------------------------------------------
000006r 1               
000006r 1               .segment	"CODE"
000006r 1               
000006r 1               .proc	_setmarks
000006r 1               
000006r 1               .segment	"CODE"
000006r 1      

/* This part is all right */

000006r 1  20 rr rr     	jsr     pusha
000009r 1  A5 rr        	lda     regbank+4
00000Br 1  A6 rr        	ldx     regbank+5
00000Dr 1  20 rr rr     	jsr     pushax
000010r 1  A0 02        	ldy     #$02
000012r 1  B1 rr        	lda     (sp),y
000014r 1  0A           	asl     a
000015r 1  18           	clc
000016r 1  48           	pha
000017r 1  A9 00        	lda     #$00
000019r 1  69 D0        	adc     #$D0
00001Br 1  AA           	tax
00001Cr 1  68           	pla
00001Dr 1  85 rr        	sta     regbank+4
00001Fr 1  86 rr        	stx     regbank+4+1
000021r 1  A0 04        	ldy     #$04
000023r 1  B1 rr        	lda     (sp),y
000025r 1  91 rr        	sta     (regbank+4),y

/* A ldy #$06 is missing here obviously !!! */

000027r 1  91 rr        	sta     (regbank+4),y
000029r 1  A0 02        	ldy     #$02
00002Br 1  91 rr        	sta     (regbank+4),y
00002Dr 1  A0 00        	ldy     #$00
00002Fr 1  91 rr        	sta     (regbank+4),y
000031r 1  A0 03        	ldy     #$03
000033r 1  B1 rr        	lda     (sp),y

/* Here are obviously missing ldy #$05, ldy #$07 */

000035r 1  91 rr        	sta     (regbank+4),y
000037r 1  91 rr        	sta     (regbank+4),y
000039r 1  91 rr        	sta     (regbank+4),y
00003Br 1  A0 01        	ldy     #$01
00003Dr 1  91 rr        	sta     (regbank+4),y

/* This part is all right again */

00003Fr 1  A0 05        	ldy     #$05
000041r 1  20 rr rr     	jsr     ldaxysp
000044r 1  E0 01        	cpx     #$01
000046r 1  30 10        	bmi     L001E
000048r 1  A2 00        	ldx     #$00
00004Ar 1  A0 02        	ldy     #$02
00004Cr 1  B1 rr        	lda     (sp),y
00004Er 1  A8           	tay
00004Fr 1  B9 rr rr     	lda     _marksprpots,y
000052r 1  0D 10 D0     	ora     $D010
000055r 1  4C rr rr     	jmp     L0076
000058r 1  A2 00        L001E:	ldx     #$00
00005Ar 1  AD 10 D0     	lda     $D010
00005Dr 1  20 rr rr     	jsr     pushax
000060r 1  A0 04        	ldy     #$04
000062r 1  B1 rr        	lda     (sp),y
000064r 1  A8           	tay
000065r 1  B9 rr rr     	lda     _marksprpots,y
000068r 1  20 rr rr     	jsr     bnega
00006Br 1  20 rr rr     	jsr     tosandax
00006Er 1  8D 10 D0     L0076:	sta     $D010
000071r 1  48           	pha
000072r 1  A0 00        	ldy     #$00
000074r 1  B1 rr        	lda     (sp),y
000076r 1  85 rr        	sta     regbank+4
000078r 1  C8           	iny
000079r 1  B1 rr        	lda     (sp),y
00007Br 1  85 rr        	sta     regbank+5
00007Dr 1  68           	pla
00007Er 1  4C rr rr     	jmp     incsp6
000081r 1               
000081r 1               .endproc