Commands
Most of the Basic 2.0 commands are supported, though with subtle changes where it made sense. For example, being a Slack app, there are no peripheral devices, so support for those was not even attempted.
Classic Commands
| Keyword | Fully Implemented | Partialy Implemented | Notes | |
|---|---|---|---|---|
| ABS | X | |||
| AND | X | |||
| ASC | X | |||
| ATN | X | |||
| CHR$ | X | |||
| CLOSE | Not implemented. Opening files not supported. | |||
| CLR | X | Does not support closing of open files, as files are not supported. | ||
| CMD | Not implemented. Other devices are not supported. | |||
| CONT | X | |||
| COS | X | |||
| DATA | X | Reserved words are not supported without quotes. | ||
| DEF | X | |||
| DIM | X | |||
| END | X | |||
| EXP | X | |||
| FN | X | |||
| FOR | X | |||
| FRE | Not implemented. So much memories! | |||
| GET | Not implemented. Keyboard support is limited to input. | |||
| GOSUB | X | |||
| GOTO | X | |||
| IF | X | |||
| INPUT | X | |||
| INT | X | |||
| LEFT$ | X | |||
| LEN | X | |||
| LET | X | |||
| LIST | X | The returned program is the processed AST of your program, so some lines may be changed. | ||
| LOAD | X | Only support for loading files, none of this device index nonsense. | ||
| LOG | X | |||
| MID$ | X | |||
| NEW | X | |||
| NEXT | X | |||
| NOT | X | |||
| ON | X | |||
| OPEN | Not implemented as peripherals are not implemented. | |||
| OR | X | |||
| PEEK | Not implemented. No peeking. | |||
| π | X | Implemented as the keyword “PI” | ||
| POKE | Not implemented. No poking! | |||
| POS | Not implemented, no cursor. | |||
| X | ||||
| READ | X | |||
| REM | X | |||
| RESTORE | X | |||
| RETURN | X | |||
| RIGHT$ | X | |||
| RND | X | Passing a negative number is not supported, nor is using the system clock as the seed. | ||
| RUN | X | |||
| SAVE | X | Only saving to files is supported. | ||
| SGN | X | |||
| SIN | X | |||
| SPC | X | |||
| SQR | X | |||
| STATUS/ST | Not implemented, no peripherals | |||
| STEP | X | |||
| STOP | X | |||
| STR$ | X | |||
| SYS | Not implemented. | |||
| TAB | Not implemented, no cursor. | |||
| TAN | X | |||
| THEN | X | |||
| TIME/TI | X | TIME / TI returns current system time in jiffies. TIME$ / TI$ returns current system time as string. Time cannot be set. | ||
| TO | X | |||
| USR | Machine language not implemented. | |||
| VAL | ||||
| VERIFY | Not implemented. | |||
| WAIT | Not implemented. Access to memory restricted. |
Graphics Commands
In addition to the classic C64 Basic 2.0 commands, a handful of graphical commands / functions have been added in order to produce rad graphics to impress your friends.
GRAPHICS width, height - Initialize the graphics context to a certain size.
DRAW color, x, y, [x2, y2] - Draw a pixel or a line. If x2, y2 is not provided, a single pixel is drawn. Otherwise, a line is drawn.
BOX color, left, top, width, height - Draw a filled rectangle at the specified coordinates.
RGB(r, g, b) - Convert the specified red, green, blue values into a single color. Values are between 0 and 255.