Click the green "?" button in the lower right corner to get started. From there you can learn more, and you can also launch some games. To launch the BASIC programming language, enter this at the "\" prompt: E000R The Apple 1 has no backspace key. Instead you use the left arrow key to "rub out" the previous character. This is displayed with a "_". The "\" prompt is the Wozmon monitor. Here you can display and edit memory locations. For example 50.52 will display the memory locations 50 to 52. 50R will run the program stored at location 50. Google Wozmon to find all the available commands. The yellow dot in the lower right corner will bring up advanced options. Here you can paste a line of text as if you had typed it on the Apple 1. You can also paste multiple lines of text from a file. And you can load a hex file into a location in memory. This screen also displays the 6502 registers, and you can halt, run, reset and single-step the CPU.
This is a complete implementation of an Apple 1/Apple I computer, except for the cassette interface. It contains a complete 6502 CPU. Here is a good intro video to Apple 1 and Wozmon by Ben Eater: https://www.youtube.com/watch?v=HlLCtjJzHVI Thanks to Steve Wozniak for the design, the Wozmon ROM, and the BASIC ROM. I built the 6502 CPU myself, and optimized it to run pretty fast. It passes the Klaus Dormann test, so it should be pretty accurate.
