So, for my 6502/6510 emulator project I've been trying to figure out the best (read that, "fastest") way to get the time with nanosecond resolution. I need this because the North American version of the Commodore 64 ran at 1.02MHz (1,022,727Hz) and so that means the clock "ticks" every 977.8 nanoseconds. And that's just for … Continue reading Fastest Way To Get The Time
As promised, here's the link to the build of Swift for the ODROID C2. This build was done on Ubuntu 20.04. Your results on other platforms/distros will most certainly vary. USE AT YOUR OWN RISK - I provide absolutely NO WARRANTY, implied or otherwise, with this what so ever. EDIT: 2020-09-22 - You will probably … Continue reading Swift 5.3 on Odroid C2
Over the weekend I managed to get a build of Swift working on the Odroid C2 SBC. As soon as I get a chance I'll TAR up the build and put it up on Dropbox. The build for the Raspberry Pi is still compiling. Here's the little sample program I wrote to test it out. … Continue reading Swift on an Odroid C2
I am really going to have to start playing around with the SwiftSyntax library! It looks like I'd be able to write some real code timesavers with it.
I've been having a tough time in Swift with the Struct vs. Class issue. Unlike Java and Objective-C, Swift allows value type "classes" known as Struct types. These behave very similar to C++ objects that are created without dynamic memory allocation - in other words they're created on the stack instead of the heap. This … Continue reading Swift Struct vs. Class
In my previous post I talked about Swift's handling of strings and the problems making the characters of a string randomly accessible because of Swift Strings being Unicode compliant. Another part of the issue, and the reason that we can think of Characters in Swift as just Strings in and of themselves, is the concept … Continue reading What in the Hell is a Grapheme Cluster?
Okay, I really do understand the plight. Honestly I do. I mean, I get it! Strings in Swift are not randomly accessible collections of bytes like they are in C or 16-bit words like they are in Objective-C or Java. In Swift a String is a collection of grapheme clusters. So, why not allow you … Continue reading Thoughts on Strings in Swift
Here's just a little tidbit that I ran across recently where Xcode, which normally does a good job covering all the bases, fell short just a bit. When you're working with dynamic libraries in just about any environment, especially Linux and MacOS, there is a two-way street when it comes to a program or another … Continue reading Working with Dynamic Libraries in Xcode
By Jim Butterfield Originally published in Compute! July 1983 (page 178) The Serial bus connects VIC or Commodore 64 to its major peripherals, especially disk and tape. The workings of this interface have been a source of bafflement to most of us. We know that it's somehow related to the IEEE-488 bus which is used … Continue reading How the VIC/64 Serial Port Works
I've decided to collect these from the Internet to save time looking for them. IEC Serial Port C64 - Wiki: Serial PortHow the VIC/64 Serial Port Works: Compute! July 1983 The Video/Audio Output Port Very early versions of the Commodore 64 did not have pins 6, 7, or 8. Commodore 128 RBGI Port Commodore 128 … Continue reading C64/128 Port Pinouts