HIRES images: rightmost part displayed on the left side, shifted down.

[frozen-signal]

This is what it looks like:

Probably related to #14

[frozen-signal]

This Applesoft program:

10 HGR : POKE -16302,0 : POKE -16372,0
20 POKE 8192,255 : POKE 9216,255
30 POKE 9215,255

With an original IOU, line 20 will draw two small lines on the top left, and line 30 will have no visual effect.
With a IOU programmed with the current sources, line 20 will draw the two small lines a bit offset to the right, and line 30 will add a small line at 1/3 of the top.

The testbench IOU_TB_SCANNER_MUX_HIRES validates that all addresses are correct; SYNC_N signal seems correct.

[frozen-signal]

The problem is the WNDW_N signal requiring a ~15ns delay. I won't be able to push the fix before monday, though.

[frozen-signal]

Fixed by commits of 2023-09-16