something wrong with the compilation: Illegal addressing mode (CPU 6502)

[GSoftwareDevelopment]

Suddenly I got this message during compilation:

rol #$00
"Illegal addressing mode (CPU 6502)"

This is for the following source line:

vol_dist[winShift+winPos]:=(vol_dist[winShift+winPos] and $0f) or (v shl 4);

Compilation result:

; optimize OK (instrument.inc), line = 346

	lda WINSHIFT
	add WINPOS
	sta :STACKORIGIN+9
	lda WINSHIFT
	add WINPOS
	tay
	lda adr.VOL_DIST,y
	and #$0F
	sta :STACKORIGIN+10
	lda V
	sta :STACKORIGIN+11
	lda WINPOS+1
	asl :STACKORIGIN+11
	rol @
	sta :STACKORIGIN+STACKWIDTH+11
	rol #$00     <--- it's here
	rol #$00
	asl :STACKORIGIN+11
	rol :STACKORIGIN+STACKWIDTH+11
	asl :STACKORIGIN+11
	rol :STACKORIGIN+STACKWIDTH+11
	asl :STACKORIGIN+11
	rol :STACKORIGIN+STACKWIDTH+11
	lda :STACKORIGIN+10
	ora :STACKORIGIN+11
	ldy :STACKORIGIN+9
	sta adr.VOL_DIST,y

I'll add that I didn't change anything at this point and this (source) code worked. What is wrong?

[GSoftwareDevelopment]

It looks like the compiler can't handle a nested "SHL" instruction.

modulate[winShift+winPos]:=modulate[winShift+winPos] and $0f or (v shl 4);

If I move the "SHL" operations outside this area, everything is OK.

v:=v shl 4;
modulate[winShift+winPos]:=modulate[winShift+winPos] and $0f or v;

[tebe6502]

i can't reproduce this issue
whats type is: vol_dist, winShift, winPos, v ?

probably you use old compiler version, current 165 works fine

[GSoftwareDevelopment]

var
  vol_dist is an array[0..127] of byte;
  winShift,winPos:smallint;
  v:byte;

I will try a newer version.

[GSoftwareDevelopment]

It turns out that I'm using version 1.6.4, and the error is still showing.

[zbyti]

It turns out that I'm using version 1.6.4, and the error is still showing.

Mad Pascal Compiler version 1.6.5 [2021/05/02] for 6502

In Mad Pascal world most stable version is ALWAYS master branch.

[zbyti]

@GSoftwareDevelopment this issue is solved and ready to close with with MP 1.6.5?