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Basic hello world, running the CPU

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This commit is contained in:
Ross Andrews
2022-02-26 01:42:32 -06:00
parent 889f85f1dd
commit 81b805f338
5 changed files with 103 additions and 21 deletions
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src/display.rs
+7 -7
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@@ -17,12 +17,12 @@ struct DisplayRegisters {
impl Default for DisplayRegisters {
fn default() -> Self {
Self {
mode: 5,
mode: 0,
screen: Word::from(0x10000),
palette: Word::from(0x20000 - 0x100),
font: Word::from(0x20000 - 0x100 - 0x2000),
height: Word::from(128),
width: Word::from(128),
height: Word::from(60),
width: Word::from(80),
row_offset: Word::from(0),
col_offset: Word::from(0),
}
@@ -122,7 +122,7 @@ fn draw_paletted_high_gfx<P: PeekPoke>(machine: &P, reg: DisplayRegisters, frame
fn draw_paletted_high_text<P: PeekPoke>(machine: &P, reg: DisplayRegisters, frame: &mut [u8]) {
for (i, pixel) in frame.chunks_exact_mut(4).enumerate() {
let (display_row, display_col) = (i / 640, i % 640);
let (vulcan_row, vulcan_col) = (Word::from(display_row >> 2), Word::from(display_col >> 2));
let (vulcan_row, vulcan_col) = (Word::from(display_row >> 3), Word::from(display_col >> 3));
let addr = to_byte_address((vulcan_col, vulcan_row), reg);
let char_idx = machine.peek(addr) as u32;
@@ -157,7 +157,7 @@ fn draw_text_pixel(pixel: &mut [u8; 4], char_col: u8, char_byte: u8, fg_color: u
fn draw_direct_high_text<P: PeekPoke>(machine: &P, reg: DisplayRegisters, frame: &mut [u8]) {
for (i, pixel) in frame.chunks_exact_mut(4).enumerate() {
let (display_row, display_col) = (i / 640, i % 640);
let (vulcan_row, vulcan_col) = (Word::from(display_row >> 2), Word::from(display_col >> 2));
let (vulcan_row, vulcan_col) = (Word::from(display_row >> 3), Word::from(display_col >> 3));
let addr = to_byte_address((vulcan_col, vulcan_row), reg);
let char_idx = machine.peek(addr) as u32;
@@ -180,7 +180,7 @@ fn draw_direct_high_text<P: PeekPoke>(machine: &P, reg: DisplayRegisters, frame:
fn draw_direct_low_text<P: PeekPoke>(machine: &P, reg: DisplayRegisters, frame: &mut [u8]) {
for (i, pixel) in frame.chunks_exact_mut(4).enumerate() {
let (display_row, display_col) = (i / 640, i % 640);
let (vulcan_row, vulcan_col) = (Word::from(display_row >> 2), Word::from(display_col >> 2));
let (vulcan_row, vulcan_col) = (Word::from(display_row >> 4), Word::from(display_col >> 4));
let addr = to_byte_address((vulcan_col, vulcan_row), reg);
let char_idx = machine.peek(addr) as u32;
@@ -203,7 +203,7 @@ fn draw_direct_low_text<P: PeekPoke>(machine: &P, reg: DisplayRegisters, frame:
fn draw_paletted_low_text<P: PeekPoke>(machine: &P, reg: DisplayRegisters, frame: &mut [u8]) {
for (i, pixel) in frame.chunks_exact_mut(4).enumerate() {
let (display_row, display_col) = (i / 640, i % 640);
let (vulcan_row, vulcan_col) = (Word::from(display_row >> 2), Word::from(display_col >> 2));
let (vulcan_row, vulcan_col) = (Word::from(display_row >> 4), Word::from(display_col >> 4));
let addr = to_byte_address((vulcan_col, vulcan_row), reg);
let char_idx = machine.peek(addr) as u32;