Apple-II

Emulates an Apple-][ with 48kB of RAM with r65emu.

Features and Limitations

• Display modes: Text, Low resolution graphics and High resolution graphics
• Language Card: Slot #0
• SmartPort: .po and .hdv files in Slot #5
• Disk-II: .dsk files in Slot #6

It does not:

• Emulate the tape interface, it's just too hard!
• Emulate Double Hires, see issue
• Support .2mg files, see issue

Keyboard

• F1 (^N): reset
• F2 (^O): advance to next file on current device
• F3 (^P): rewind current device
• F4 (^Q): select input device (Tape, D1:, D2:)
• F5 (^R): load program from tape (by simulating typing it)
• F6 (^S): checkpoint machine to file
• F7 (^T): restore machine from selected checkpoint

Tested Platforms

Please see r65emu for dependency information.

• ESP8266 with ILI9341 TFT display, serial terminal and LittleFS (esp8bit).
• LilyGO TTGO with VGA, PS/2 keyboard and SD card.
• Adafruit Feather with DVI, serial terminal and LittleFS.

Programs

The data directory contains some simple programs from Applesoft Sampler - 680-0179-A.dsk.

Disk images (.dsk) are from here

The filesystem can be uploaded using:

$ make t=[esp8266 esp32 | rp2040] littlefs upload-littlefs

Filtering

Programs and disk-images in the uploaded filesystem (or SD card) are filtered by the device:

• Tape reports only .bas, .int, .txt and .img files:
  • .bas, .int and .txt files can be loaded using F4;
  • .img (checkpoint) files can be loaded using F7 (restore from checkpoint).
• D1 and D2 report only .dsk, .po and .hdv files:
  • selecting an image-file using F4 and F2 is like inserting a disk in a drive,
  • once "inserted", a disk image can be booted using PR #6 (for .dsk) or PR #7 (for .po or .hdv).