I've been looking for a chart that would show comperable modern chip alternatives to chips on the II/II-Plus. I found a similar chart for Commodore systems and a list of chips for the Apple II/II-Plus but have yet to find a modern replacement chart. While new to this granularity of electronics I am learning fast how to read the chip designations, such as the various families of the 74LS chips, etc. But, I am still learning how to know if the modern version of a chips, such as a 74LSxxxxN, etc is truly backwards compatible.
Does anyone have any suggestions or guidance on where to either find a comparison chart. If not, I may start trying to make one by digging throuh the Datasheet of legacy chips and seeing if it looks like modern versions I find will be acceptable. I checked Apple II files on asimov but no luck yet.