niconii

ident:
    /[A-Za-z_.][A-Za-z0-9_.]*/

expr:
    ident |
    expr '+' expr |
    etc.

nl:
    '\' | '\r' | '\n' | EOF

niconii

fn main() {
    let mut ram = [0u16; 0x2000];

    let mut rom = [0xffffu16; 0xc000];
    {
        let mut ptr = 0x0000;
        let mut mov = |dst, src| {
            rom[ptr+0] = src;
            rom[ptr+1] = dst;
            ptr += 2;

niconii

tsx             ; transfer stack pointer to X register
stx scratch     ; store X in RAM
ldx #$01        ; load 0x01 into X
stx scratch+1   ; store X in RAM
ldx offset      ; load offset into X
lda (scratch,x) ; perform an indirect load from *(scratch + X) into A

1+2+2+2+2+2 bytes  = 11 bytes
2+3+2+3+3+6 cycles = 19 cycles

niconii

bankswitch(bank, address) {
    push old bank to stack                  ; in old bank
    switch code bank register to new bank   ; in old bank
    call bank:address                       ; in old bank

    ; function in new bank returns here
    pop old bank from stack                 ; in new bank
    switch code bank register to old bank   ; in new bank
    jump to label in old bank               ; in new bank

niconii

trait ControllerPins {
    // inputs:
    // latch pin (normally low)
    fn latch_rising(&mut self);
    fn latch_falling(&mut self);
    // clock pin (normally high)
    fn clock_rising(&mut self);
    fn clock_falling(&mut self);
    
    // output:

niconii

; Goal: to turn controller button samples, incoming on the x register each
; frame, into three variables:
;   - cur, which represents the current state of the controller buttons
;   - prs, which represents the buttons pressed this frame
;   - rls, which represents the buttons released this frame
; 
; Example:
;   x                 cur               prs               rls
;                     ................  ................  ................  <- initial values
;   ...........1....  ...........1....  ...........1....  ................

niconii

extern crate sdl2;

use sdl2::pixels::Color;
use sdl2::event::Event;
use sdl2::keyboard::Keycode;

use std::sync::mpsc::{Receiver, Sender};

enum Command {
    SetBG(u8, u8, u8),

niconii

Escape sequences

Sequence	Results in
\[	[
\]	]
\\	\

Format characters

niconii

[ '['
x exchange bg/fg colors
krygbcmwn dark colors
KRYGBCMW  light colors
h00 256-color
i italics
u underline
c clear all formatting

|[bxWu]Test|c

niconii

Keybase proof

I hereby claim:

• I am niconii on github.
• I am niconii (https://keybase.io/niconii) on keybase.
• I have a public key whose fingerprint is 9C90 5AFA 2637 6CD7 7727 442B B306 692C E33C FE6B

To claim this, I am signing this object: