文件列表:

.DS_Store (6148, 2021-10-21)
Assembler.xcodeproj/ (0, 2021-10-21)
Assembler.xcodeproj/project.pbxproj (31287, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/ (0, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/contents.xcworkspacedata (154, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/xcshareddata/ (0, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist (238, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings (241, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/xcuserdata/ (0, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/xcuserdata/ulrikdamm.xcuserdatad/ (0, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/xcuserdata/ulrikdamm.xcuserdatad/UserInterfaceState.xcuserstate (75132, 2021-10-21)
Assembler.xcodeproj/project.xcworkspace/xcuserdata/ulrikdamm.xcuserdatad/WorkspaceSettings.xcsettings (561, 2021-10-21)
Assembler.xcodeproj/xcshareddata/ (0, 2021-10-21)
Assembler.xcodeproj/xcshareddata/xcbaselines/ (0, 2021-10-21)
Assembler.xcodeproj/xcshareddata/xcbaselines/FF451FC11D84388400E54BD3.xcbaseline/ (0, 2021-10-21)
Assembler.xcodeproj/xcshareddata/xcbaselines/FF451FC11D84388400E54BD3.xcbaseline/2B9C3DE3-F144-4339-9CCE-A7078082F7C8.plist (554, 2021-10-21)
Assembler.xcodeproj/xcshareddata/xcbaselines/FF451FC11D84388400E54BD3.xcbaseline/E7A1D138-53D6-4D50-BB82-A21F273A8D26.plist (883, 2021-10-21)
Assembler.xcodeproj/xcshareddata/xcbaselines/FF451FC11D84388400E54BD3.xcbaseline/Info.plist (1595, 2021-10-21)
Assembler.xcodeproj/xcuserdata/ (0, 2021-10-21)
Assembler.xcodeproj/xcuserdata/ulrikdamm.xcuserdatad/ (0, 2021-10-21)
Assembler.xcodeproj/xcuserdata/ulrikdamm.xcuserdatad/xcdebugger/ (0, 2021-10-21)
Assembler.xcodeproj/xcuserdata/ulrikdamm.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist (2402, 2021-10-21)
Assembler.xcodeproj/xcuserdata/ulrikdamm.xcuserdatad/xcschemes/ (0, 2021-10-21)
Assembler.xcodeproj/xcuserdata/ulrikdamm.xcuserdatad/xcschemes/Assembler.xcscheme (3601, 2021-10-21)
Assembler.xcodeproj/xcuserdata/ulrikdamm.xcuserdatad/xcschemes/AssemblerCLI.xcscheme (3842, 2021-10-21)
Assembler.xcodeproj/xcuserdata/ulrikdamm.xcuserdatad/xcschemes/xcschememanagement.plist (763, 2021-10-21)
Examples/ (0, 2021-10-21)
Examples/helloworld.asm (2977, 2021-10-21)
Examples/movement.asm (5784, 2021-10-21)
Examples/smiley.asm (758, 2021-10-21)
Package.swift (937, 2021-10-21)
Sources/ (0, 2021-10-21)
Sources/Assembler.swift (2049, 2021-10-21)
Sources/AssemblyParser.swift (8017, 2021-10-21)
Sources/Data.swift (2473, 2021-10-21)
Sources/Disassembler.swift (38349, 2021-10-21)
Sources/Expression.swift (5491, 2021-10-21)
Sources/GameboyInstructionSet.swift (15692, 2021-10-21)
... ...

# Gameboy Assembler Small assembler for Gameboy assembly programs written in Swift. Assembly syntax mostly follows other assemblers, but is probably not compatible. Takes an assembly file as input, produces a binary, which can be executed in a Gameboy emulator. Is fairly feature complete, supports all of the instruction set. Still missing some nice-to-have features, see the todo below. ## Example program Here is a small example Gameboy program, which displays a smiley sprite on screen: ```assembly # Simple smiley # Displays a smiley sprite in the upper left corner of the screen bg_tile_map = 0x9800 bg_tile_data = 0x9000 [org(0x4000)] graphics: db 0x00, 0x24, 0x24, 0x00, 0x81, 0x7e, 0x00, 0x00 [org(0x100)] start: nop; jp main [org(0x134)] game_title: db "SMILEY" [org(0x150)] main: # Set LCDC (bit 7: operation on, bit 0: bg and win on) ld hl, 0xff40 ld [hl], (1 | (1 << 7)) # Set first bg tile ld h, (bg_tile_map >> 8) ld l, (bg_tile_map & 0xff) ld [hl], 1 # Set the tile data ld h, (bg_tile_data >> 8) ld l, ((bg_tile_data & 0xff) + 16) ld b, 8 ld de, 0x4000 loop: ld a, [de] inc de ld [hl+], a ld [hl+], a dec b jp nz, loop # Set bg palette data ld hl, 0xff47 ld [hl], 0xe4 end: jp end [org(0x7fff)] pad: db 0x00 ``` This is how it looks:  There are more examples in the examples folder: [Smiley sprite](Examples/smiley.asm) | [Hello world](Examples/helloworld.asm) | [Directional pad movement](Examples/movement.asm) ## Usage Quick start: ```bash git clone git@github.com:ulrikdamm/Assembler.git cd Assembler swift build -c release ./.build/release/Assembler input.asm ``` You can compile the app from the Xcode project or by running `swift build` (the executable will be in .build/debug/Assembler) You compile source code with `Assembler input.asm`. It also contains a dynamic framework which you can import into a macOS or iOS app. ## Project status The assembler is stable and able to produce working binaries. See below for which features are supported and which are yet to come. ### New in version 1.2 Optional linker output showing all symbol locations (run with `--output-symbols`) Relative jumps (`jr`) Updated syntax (uses [] instead of () for direct memory access, as in `ld a, [0xff46]`) Example code showing gamepad input and DMA transfers Fixed problems with loads between a and memory that wouldn't assemble properly ### New in version 1.1 Ability to use labels in expressions (e.g. `ld a, (data_end - data)`) Allows empty labels (useful for the first point) Better command line interface, allows relative paths Updated examples Fixed loading of values between A and memory addresses (e.g. `ld a, (0xff00 + 0x44)`) ### Implemented features Assembly parsing Code generation Linking All of the Gameboy instruction set Error reporting with line numbers Command line interface Constant defines Build-time expressions Strings ### Todo Imports and file modules Smart layout of disconnected blocks in linker Support for variables though `ds` (define storage) ### Wish list More awesome example programs Sprite importer (manually entering pixel hex codes suck. Maybe a way of defining sprites in ASCII art?) Graphical code editor ## Contributing Right now it's still a personal project, and I might not be accepting pull requests for new features. Bug fixes and more tests are welcome though. If you find a bug or a missing feature, feel free to submit an issue.

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