The ability to make apps for the iPhone didn’t come along until 2008 with the iPhone SDK, and the App Store was launched in summer 2008 alongside the iPhone 3G (as a side note it’s kind of insane to picture the iPhone before it could run apps). The original iPhone shipped in 2007 with a 32-bit ARM processor. First the iPhone 5 had a longer/taller screen, then the iPhone 6 and 6+ had larger screens, then various iPad screen sizes got released, and code had to be modified to properly handle all of these resolution changes. Parallel to all of that, the iOS devices on the market started to come out in different screen sizes, ratios and densities.Xcode comes up with and submits both 32-bit and 64-bit apps for you, and most if not all iOS developers are using Xcode. It still does this to this day because despite the latest version of iOS cutting off 32-bit devices, there are still plenty of 32-bit only devices running iOS 10 that are still supported. The App Store allowed and then later required apps to be submitted in both 32-bit and 64-bit binaries.It’s confusing, but technically iOS 11 could have both existed only in a 64-bit form for iOS devices with a 64-bit processor and also still allowed those devices to run 32-bit apps, but Apple decided to make a clean break. The 64-bit version of iOS prior to iOS 11 could run 32-bit apps but the 32-bit versions of iOS could not run 64-bit apps, and iOS 11 cut off 32-bit app support entirely.iOS as an operating system existed in a 32-bit version for 32-bit devices and in a 64-bit version for 64-bit devices, until iOS 11 which did not feature a 32-bit version.The iPhone and iPad as devices evolved from devices with 32-bit processors to devices with 64-bit processors.This wound up being both harder and easier than I expected. However, since the source code for both of them has always been available, I went and did the work to update them and get them working in the latest versions of iOS. Over the next few years they saw some updates and improvements but neither of them have been updated since 2014 and, since they were 32-bit apps, they no longer work on iOS 11 at all since iOS 11 cut off support for 32-bit apps.

The short backstory is: back in 2009, id Software ported Wolfenstein 3D and later DOOM to iOS. Note that I’m saying “for iOS 11” to denote that these will run on the latest versions of iOS and have 64-bit versions but really they should run on any iOS later than iOS 9 which, according to Apple, is 93% or more of devices in use today. And I’ve now finished them.įor those who just want to cut to the chase here’s the repos where you can grab the updates. Or really, just any modern version of iOS. OK, so for a few months now I’ve been working on getting the old id Software ports of Wolfenstein 3D and DOOM working on iOS 11.

Wolfenstein 3D and DOOM on iOS 11 Schnapple | April 4, 2018

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