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@ -0,0 +1,104 @@
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|
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LOL 01 010f
|
||||
LOL 01 0112
|
||||
LOL 01 0117
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||||
LOL 00 0117
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||||
NOP
|
||||
LOL 01 0110
|
||||
LOL 01 0115
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||||
LOL 01 0113
|
||||
LOL 00 0112
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 01 0112
|
||||
LOL 00 0115
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 01 0114
|
||||
LOL 01 0115
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 00 0114
|
||||
LOL 00 0115
|
||||
LOL 00 010f
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 00 010F
|
||||
LOL 00 0110
|
||||
LOL 00 0111
|
||||
LOL 00 0112
|
||||
LOL 00 0113
|
||||
LOL 00 0114
|
||||
LOL 00 0115
|
||||
LOL 00 0116
|
||||
LOL 01 0110
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 01 010f
|
||||
LOL 01 0111
|
||||
LOL 01 0113
|
||||
LOL 01 0114
|
||||
LOL 01 0115
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 00 0111
|
||||
LOL 01 0112
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 00 010F
|
||||
LOL 00 0110
|
||||
LOL 00 0111
|
||||
LOL 00 0112
|
||||
LOL 00 0113
|
||||
LOL 00 0114
|
||||
LOL 00 0115
|
||||
LOL 00 0116
|
||||
LOL 01 010f
|
||||
LOL 01 0110
|
||||
LOL 01 0111
|
||||
LOL 01 0114
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 00 010F
|
||||
LOL 00 0110
|
||||
LOL 00 0111
|
||||
LOL 00 0112
|
||||
LOL 00 0113
|
||||
LOL 00 0114
|
||||
LOL 00 0115
|
||||
LOL 00 0116
|
||||
LOL 01 010f
|
||||
LOL 01 0110
|
||||
LOL 01 0112
|
||||
LOL 01 0113
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 00 0112
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOL 00 010F
|
||||
LOL 00 0110
|
||||
LOL 00 0111
|
||||
LOL 00 0112
|
||||
LOL 00 0113
|
||||
LOL 00 0114
|
||||
LOL 00 0115
|
||||
LOL 00 0116
|
||||
LOL 01 0110
|
||||
LOL 01 0115
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
HLT
|
||||
Binary file not shown.
@ -0,0 +1,57 @@
|
||||
LOL 1c 011f
|
||||
LOL 03 0120
|
||||
LOL 00 0121
|
||||
LOL 01 0119
|
||||
LOL 00 0118
|
||||
LOL 01 0117
|
||||
LOA 011f 0118
|
||||
LOL 00 0117
|
||||
LOL 00 0119
|
||||
LOL 00 0118
|
||||
LOL 2f 0122
|
||||
LOL 00 0118
|
||||
LOL 01 0117
|
||||
LOA 0122 0118
|
||||
LOL 00 0117
|
||||
LOL 00 0119
|
||||
LOL 00 0118
|
||||
LOL 01 0119
|
||||
LOL 00 0118
|
||||
LOL 01 0117
|
||||
LOA 0120 0118
|
||||
LOL 00 0117
|
||||
LOL 00 0119
|
||||
LOL 00 0118
|
||||
LOL 20 0123
|
||||
LOL 7e 0124
|
||||
LOL 3d 0125
|
||||
LOL 20 0126
|
||||
LOL 00 0118
|
||||
LOL 01 0117
|
||||
LOA 0123 0118
|
||||
LOA 0124 0118
|
||||
LOA 0125 0118
|
||||
LOA 0126 0118
|
||||
LOL 00 0117
|
||||
LOL 00 0119
|
||||
LOL 00 0118
|
||||
LOL 00 00F2
|
||||
JML 00b6
|
||||
SAA 011f 0120
|
||||
STA 011f
|
||||
LOL 01 00F0
|
||||
AAA 0121 00F0
|
||||
STA 0121
|
||||
JGT 00a2 011f 00f2
|
||||
LOL 01 0119
|
||||
LOL 00 0118
|
||||
LOL 01 0117
|
||||
LOA 0121 0118
|
||||
LOL 00 0117
|
||||
LOL 00 0119
|
||||
LOL 00 0118
|
||||
LOL 01 0116
|
||||
LOL 01 0117
|
||||
LOL 00 0116
|
||||
LOL 00 0117
|
||||
HLT
|
||||
Binary file not shown.
@ -0,0 +1,29 @@
|
||||
NOP
|
||||
NOP
|
||||
LOL 01 00ff
|
||||
LOL 01 0100
|
||||
NOP
|
||||
LOL 01 010f
|
||||
LOL 01 0115
|
||||
LOL 01 0116
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
JEA 00ff 0100 002a
|
||||
JML 002e
|
||||
LOL 01 0106
|
||||
NOP
|
||||
JEA 010f 0115 0039
|
||||
JML 003d
|
||||
LOL 01 0110
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
LOA 00ff 0114
|
||||
LOL 00 00ff
|
||||
LOL 01 0117
|
||||
LOL 00 0117
|
||||
NOP
|
||||
DBG
|
||||
DBG
|
||||
HLT
|
||||
Binary file not shown.
@ -0,0 +1,94 @@
|
||||
#the closest thing to writing raw ASM
|
||||
import re, sys
|
||||
|
||||
code = open(sys.argv[1]).read()
|
||||
|
||||
outhex = ""
|
||||
|
||||
def writeHex(str):
|
||||
global outhex
|
||||
#print(f"0x{str}")
|
||||
outhex += str
|
||||
|
||||
count = 1
|
||||
for i in re.split("\n| ",code):
|
||||
match i:
|
||||
case "NOP":
|
||||
writeHex("00")
|
||||
case "INC":
|
||||
writeHex("01")
|
||||
case "IRA":
|
||||
writeHex("02")
|
||||
case "IRX":
|
||||
writeHex("03")
|
||||
case "IRY":
|
||||
writeHex("04")
|
||||
case "DNC":
|
||||
writeHex("05")
|
||||
case "DCA":
|
||||
writeHex("06")
|
||||
case "DCX":
|
||||
writeHex("07")
|
||||
case "DCY":
|
||||
writeHex("07")
|
||||
case "JEA":
|
||||
writeHex("10")
|
||||
case "JER":
|
||||
writeHex("11")
|
||||
case "JNA":
|
||||
writeHex("12")
|
||||
case "JNR":
|
||||
writeHex("13")
|
||||
case "JIS":
|
||||
writeHex("14")
|
||||
case "JGT":
|
||||
writeHex("15")
|
||||
case "JLT":
|
||||
writeHex("16")
|
||||
case "JML":
|
||||
writeHex("1A")
|
||||
case "JMA":
|
||||
writeHex("1B")
|
||||
case "LXA":
|
||||
writeHex("20")
|
||||
case "LXL":
|
||||
writeHex("21")
|
||||
case "LYA":
|
||||
writeHex("22")
|
||||
case "LYL":
|
||||
writeHex("23")
|
||||
case "LAA":
|
||||
writeHex("24")
|
||||
case "LAL":
|
||||
writeHex("25")
|
||||
case "LOA":
|
||||
writeHex("26")
|
||||
case "LOL":
|
||||
writeHex("27")
|
||||
case "STX":
|
||||
writeHex("2A")
|
||||
case "STY":
|
||||
writeHex("2B")
|
||||
case "STA":
|
||||
writeHex("2C")
|
||||
case "AAA":
|
||||
writeHex("42")
|
||||
case "SAA":
|
||||
writeHex("47")
|
||||
case "DBG":
|
||||
writeHex("FF")
|
||||
case "HLT":
|
||||
writeHex("FC")
|
||||
case other:
|
||||
if len(i) == 4: #assume memory address
|
||||
writeHex(f"{i[0]+i[1]}")
|
||||
writeHex(f"{i[2]+i[3]}")
|
||||
elif len(i) == 2:
|
||||
writeHex(f"{i}")
|
||||
#else:
|
||||
# writeHex("00")
|
||||
count+=1
|
||||
|
||||
#print(outhex)
|
||||
with open(sys.argv[2], "wb") as f:
|
||||
f.write(bytes.fromhex(outhex))
|
||||
@ -0,0 +1,204 @@
|
||||
use std::process;
|
||||
|
||||
#[derive(Default)]
|
||||
struct CPUFlags {
|
||||
overflow: bool,
|
||||
sub: bool,
|
||||
}
|
||||
|
||||
pub struct CPU {
|
||||
prgmem: [u8; 0xFFFF + 1],
|
||||
memory: [u8; 0xFFFF + 1],
|
||||
prc: u16,
|
||||
acc: u8,
|
||||
irx: u8,
|
||||
iry: u8,
|
||||
pub is_on: bool,
|
||||
flags: CPUFlags,
|
||||
}
|
||||
|
||||
impl CPU {
|
||||
//FIXME: pass in debug info here
|
||||
pub fn from_prg_vec(program: Vec<u8>) -> Self {
|
||||
let mut prgmem = [0; 0xFFFF + 1];
|
||||
for (idx, ele) in program.iter().enumerate() {
|
||||
prgmem[idx] = *ele;
|
||||
}
|
||||
CPU {
|
||||
prgmem: prgmem,
|
||||
memory: [0; 0xFFFF + 1],
|
||||
prc: 0,
|
||||
acc: 0,
|
||||
irx: 0,
|
||||
iry: 0,
|
||||
is_on: true,
|
||||
flags: CPUFlags::default(),
|
||||
}
|
||||
}
|
||||
|
||||
fn get_next_8bit_value(&mut self) -> u8 {
|
||||
self.prgmem[{
|
||||
self.prc += 1;
|
||||
self.prc
|
||||
} as usize]
|
||||
}
|
||||
|
||||
fn get_next_16bit_value(&mut self) -> u16 {
|
||||
256 * self.prgmem[{
|
||||
self.prc += 1;
|
||||
self.prc
|
||||
} as usize] as u16
|
||||
+ self.prgmem[{
|
||||
self.prc += 1;
|
||||
self.prc
|
||||
} as usize] as u16
|
||||
}
|
||||
|
||||
fn write_to_serial(&mut self) {
|
||||
// FIXME: make serial offset configurable
|
||||
if self.memory[0x010F + 8] > 0 {
|
||||
let mut charcode = 0;
|
||||
// FIXME: make this less jank. bit manip maybe?
|
||||
if self.memory[0x010F] > 0 {
|
||||
charcode += 64;
|
||||
}
|
||||
if self.memory[0x0110] > 0 {
|
||||
charcode += 32;
|
||||
}
|
||||
if self.memory[0x0111] > 0 {
|
||||
charcode += 16;
|
||||
}
|
||||
if self.memory[0x0112] > 0 {
|
||||
charcode += 8;
|
||||
}
|
||||
if self.memory[0x0113] > 0 {
|
||||
charcode += 4;
|
||||
}
|
||||
if self.memory[0x0114] > 0 {
|
||||
charcode += 2;
|
||||
}
|
||||
if self.memory[0x0115] > 0 {
|
||||
charcode += 1;
|
||||
}
|
||||
if self.memory[0x0118] > 0 {
|
||||
charcode = self.memory[0x0118];
|
||||
}
|
||||
if charcode == 0 && self.memory[0x0116] == 0 {
|
||||
return;
|
||||
}
|
||||
|
||||
if self.memory[0x0119] == 0 {
|
||||
print!("{}", char::from_u32(charcode.into()).unwrap());
|
||||
} else {
|
||||
print!("{}", charcode)
|
||||
}
|
||||
if self.memory[0x0116] > 0 {
|
||||
println!("")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// NOTE: most opcode implementations are translated from C, in all their janky glory
|
||||
pub fn step(&mut self) {
|
||||
let inst = self.prgmem[self.prc as usize];
|
||||
match inst {
|
||||
0x00 => {}
|
||||
0x01 => self.memory[self.get_next_16bit_value() as usize] += 1,
|
||||
0x02 => self.acc += 1,
|
||||
0x03 => self.irx += 1,
|
||||
0x04 => self.iry += 1,
|
||||
0x05 => self.memory[self.get_next_16bit_value() as usize] -= 1,
|
||||
0x06 => self.acc -= 1,
|
||||
0x07 => self.irx -= 1,
|
||||
0x08 => self.iry -= 1,
|
||||
0x10 => {
|
||||
let new_prc = self.get_next_16bit_value();
|
||||
let addr1 = self.get_next_16bit_value() as usize;
|
||||
let addr2 = self.get_next_16bit_value() as usize;
|
||||
if self.memory[addr1] == self.memory[addr2] {
|
||||
self.prc = new_prc - 1
|
||||
}
|
||||
}
|
||||
0x12 => {
|
||||
let new_prc = self.get_next_16bit_value();
|
||||
let addr1 = self.get_next_16bit_value() as usize;
|
||||
let addr2 = self.get_next_16bit_value() as usize;
|
||||
if self.memory[addr1] != self.memory[addr2] {
|
||||
self.prc = new_prc - 1
|
||||
}
|
||||
}
|
||||
0x14 => {
|
||||
// JIS; Jump If SUB (😳)
|
||||
let new_prc = self.get_next_16bit_value();
|
||||
if self.flags.sub {
|
||||
self.flags.sub = false;
|
||||
self.prc = new_prc - 1;
|
||||
}
|
||||
}
|
||||
0x15 => {
|
||||
//JGT; Jump If Greater Than
|
||||
let new_prc = self.get_next_16bit_value();
|
||||
let addr1 = self.get_next_16bit_value() as usize;
|
||||
let addr2 = self.get_next_16bit_value() as usize;
|
||||
if self.memory[addr1] > self.memory[addr2] {
|
||||
self.prc = new_prc - 1
|
||||
}
|
||||
}
|
||||
0x16 => {
|
||||
//JGT; Jump If Less Than
|
||||
let new_prc = self.get_next_16bit_value();
|
||||
let addr1 = self.get_next_16bit_value() as usize;
|
||||
let addr2 = self.get_next_16bit_value() as usize;
|
||||
if self.memory[addr1] < self.memory[addr2] {
|
||||
self.prc = new_prc - 1
|
||||
}
|
||||
}
|
||||
0x1A => {
|
||||
let new_prc = self.get_next_16bit_value();
|
||||
self.prc = new_prc - 1
|
||||
}
|
||||
0x20 => self.irx = self.memory[self.get_next_16bit_value() as usize],
|
||||
0x23 => self.iry = self.memory[self.get_next_16bit_value() as usize],
|
||||
0x26 => {
|
||||
let addr1 = self.get_next_16bit_value() as usize;
|
||||
let addr2 = self.get_next_16bit_value() as usize;
|
||||
self.memory[addr2] = self.memory[addr1]
|
||||
}
|
||||
0x27 => self.memory[self.get_next_16bit_value() as usize] = self.get_next_8bit_value(),
|
||||
0x2B => self.memory[self.get_next_16bit_value() as usize] = self.iry,
|
||||
0x2C => self.memory[self.get_next_16bit_value() as usize] = self.acc,
|
||||
0x42 => {
|
||||
// ADD absolute
|
||||
let addr1 = self.get_next_16bit_value() as usize;
|
||||
let addr2 = self.get_next_16bit_value() as usize;
|
||||
self.acc = self.memory[addr2] + self.memory[addr1]
|
||||
}
|
||||
0x47 => {
|
||||
// SUB absolute
|
||||
let addr1 = self.get_next_16bit_value() as usize;
|
||||
let addr2 = self.get_next_16bit_value() as usize;
|
||||
let val1: i16 = self.memory[addr1].into();
|
||||
let val2: i16 = self.memory[addr2].into();
|
||||
let tmp_val = val1 - val2;
|
||||
if tmp_val < 0 {
|
||||
self.flags.sub = true
|
||||
}
|
||||
if tmp_val < -255 || tmp_val > 255 {
|
||||
self.flags.overflow = true
|
||||
}
|
||||
self.acc = tmp_val as u8;
|
||||
}
|
||||
0x50 => todo!(), // FIXME: wtf does ~(irx & iry) mean
|
||||
0xFC => self.is_on = false,
|
||||
0xFF => {}
|
||||
_ => {
|
||||
eprintln!("Opcode 0x{:x} not implemented!", inst);
|
||||
process::exit(1);
|
||||
}
|
||||
}
|
||||
self.prc += 1;
|
||||
|
||||
// FIXME: serial io peripheral should be optional
|
||||
self.write_to_serial();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,41 @@
|
||||
use std::{fs::File, io::Read, process};
|
||||
|
||||
use clap::Parser;
|
||||
|
||||
mod cpu;
|
||||
|
||||
use cpu::CPU;
|
||||
|
||||
#[derive(Parser, Debug)]
|
||||
#[command(author, version, about, long_about = None)]
|
||||
struct Args {
|
||||
/// Name of the compiled LRIS program to run
|
||||
filename: String,
|
||||
|
||||
// Enables showing debug information with $FF
|
||||
#[arg(short, long, default_value_t = true)]
|
||||
debug: bool,
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let cli = Args::parse();
|
||||
|
||||
let filename = &cli.filename;
|
||||
|
||||
let mut file = File::open(filename).unwrap_or_else(|_| {
|
||||
eprintln!("err: file `{}` doesn't exist", filename);
|
||||
process::exit(1);
|
||||
});
|
||||
|
||||
let mut buffer = vec![];
|
||||
file.read_to_end(&mut buffer).unwrap_or_else(|_| {
|
||||
eprintln!("err: failed to read file `{}`", filename);
|
||||
process::exit(1);
|
||||
});
|
||||
|
||||
let mut cpu = CPU::from_prg_vec(buffer);
|
||||
|
||||
while cpu.is_on {
|
||||
cpu.step();
|
||||
}
|
||||
}
|
||||
Loading…
Reference in new issue