I don&#x27;t think that&#x27;s true.<p><a href="http:&#x2F;&#x2F;www.downloads.reactivemicro.com&#x2F;Public&#x2F;Users&#x2F;David_Craig&#x2F;Apple2OriginalROMInfo.TXT" rel="nofollow">http:&#x2F;&#x2F;www.downloads.reactivemicro.com&#x2F;Public&#x2F;Users&#x2F;David_Cr...</a><p>Code is straight from the Red Book listings. Search for ROR - accumulator (shown explicitly), indexed, you name it. 4 modes each.