2018-05-27 15:44:16 +00:00
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# Apple //e emulator in go
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Ebiten based apple //e emulator written in go.
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## Features
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* MOS 6502 CPU
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* keyboard
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* 40 column text mode
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* low resolution color graphics
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* high resolution monochrome graphics
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* upper memory bank switching: $d000 page and ROM/RAM switching
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* main memory page1/page2 switching in text, lores and hires
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* speaker audio
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## Installation
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Install prerequisites with glide
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glide up
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Build the executable
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go build
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Download `apple2e.rom` from
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[a2go.applearchives.com](http://a2go.applearchives.com/roms/) and put it in the root directory.
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## Running it
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2018-05-27 19:45:31 +00:00
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./apple2
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./apple2 my_disk_image.dsk
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./apple2 -drive-head-click my_disk_image.dsk
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2018-05-27 15:44:16 +00:00
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## Running the tests
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### Setting up the tests
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Some disk images are used for the tests
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2018-05-27 19:37:26 +00:00
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* dos33.dsk from e.g. [mirrors.apple2.org.za](https://mirrors.apple2.org.za/ftp.apple.asimov.net/images/masters/DOS33_blank_with_integer_basic.DSK)
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2018-05-27 15:44:16 +00:00
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* prodos19.dsk from e.g. [mirrors.apple2.org.za](https://mirrors.apple2.org.za/ftp.apple.asimov.net/images/masters/prodos/ProDOS_1_9.dsk)
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### Running the tests
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go test -v
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The CPU tests make use of [Klaus2m5's](https://github.com/Klaus2m5/6502_65C02_functional_tests)
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excellent 6502 functional tests.
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## Known working images
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* DOS 3.3
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* Prodos 1.9
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* Lemonade stand
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* Montezuma's Revenge
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## Keyboard shortcuts
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* ctrl-alt-R reset
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* ctrl-alt-M mute
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* ctrl-alt-C capslock
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## Remaining work
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* 80 column card
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* 48k aux memory
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* double hires
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* paddles
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## Known issues
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1. On MacOS, the initial beep is sometimes split into two little beeps. This appears to be an ebiten issue.
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2. On MacOS, shutting down sometimes takes 30 seconds or so
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