mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-09-11 09:54:37 +00:00
76 lines
2.8 KiB
Plaintext
76 lines
2.8 KiB
Plaintext
import "msx";
|
|
|
|
bank rom @ 0x4000 : [constdata; 0x4000];
|
|
bank ram @ 0xE000 : [vardata; 0x2000];
|
|
|
|
in ram {}
|
|
|
|
in rom {
|
|
// FIXME: add support for MSX ROM header format directly in Wiz.
|
|
namespace header {
|
|
const id = "AB";
|
|
const init_handler = main;
|
|
const statement_handler = 0u16;
|
|
const expansion_handler = 0u16;
|
|
const basic_start = 0u16;
|
|
const padding = [0u8; 6];
|
|
}
|
|
|
|
#[fallthrough] func main() {
|
|
interrupt = false;
|
|
|
|
// Set border color.
|
|
msx.bios.border_color = a = msx.vdp.color.BLACK;
|
|
msx.bios.vdp_apply_colors();
|
|
|
|
// Init screen mode.
|
|
load_inc_repeat(
|
|
de = <>:&msx.bios.screen_2_nametable,
|
|
hl = <>:&screen_init_data,
|
|
bc = sizeof(typeof(screen_init_data)));
|
|
msx.bios.init_screen_2(
|
|
msx.bios.screen_2_nametable,
|
|
msx.bios.screen_2_tile_color_table,
|
|
msx.bios.screen_2_tile_pattern_table,
|
|
msx.bios.screen_2_sprite_attribute_table,
|
|
msx.bios.screen_2_sprite_pattern_table
|
|
);
|
|
|
|
// Disable the screen so we can access VRAM. (Initializing the screen mode also enables the screen).
|
|
msx.bios.disable_screen();
|
|
// Load tileset colors.
|
|
let COLOR_ATTRIBUTE = (msx.vdp.color.WHITE << 4) | msx.vdp.color.LIGHT_BLUE;
|
|
msx.bios.vdp_vram_fill_block(msx.vdp.screen2.TILESET_COLOR_RAM_ADDRESS, COLOR_ATTRIBUTE, msx.vdp.screen2.TILESET_COLOR_RAM_SIZE);
|
|
// Load tileset patterns.
|
|
msx.bios.vdp_vram_write_block(msx.vdp.screen2.TILESET_PATTERN_BANK_TOP_ADDRESS, &bkg_tileset[0], sizeof(typeof(bkg_tileset)));
|
|
msx.bios.vdp_vram_write_block(msx.vdp.screen2.TILESET_PATTERN_BANK_MIDDLE_ADDRESS, &bkg_tileset[0], sizeof(typeof(bkg_tileset)));
|
|
msx.bios.vdp_vram_write_block(msx.vdp.screen2.TILESET_PATTERN_BANK_BOTTOM_ADDRESS, &bkg_tileset[0], sizeof(typeof(bkg_tileset)));
|
|
// Clear nametable.
|
|
msx.bios.vdp_vram_fill_block(msx.vdp.screen2.NAMETABLE_ADDRESS, 0, msx.vdp.screen2.NAMETABLE_SIZE);
|
|
// Write text to nametable.
|
|
let START_OFFSET_Y = 8;
|
|
let START_OFFSET_X = 10;
|
|
let MESSAGE_DEST_ADDRESS = msx.vdp.screen2.NAMETABLE_ADDRESS + START_OFFSET_Y * 32 + START_OFFSET_X;
|
|
msx.bios.vdp_vram_write_block(MESSAGE_DEST_ADDRESS, &message[0], sizeof(typeof(message)));
|
|
// Turn screen on.
|
|
msx.bios.enable_screen();
|
|
|
|
interrupt = true;
|
|
|
|
while true {
|
|
halt();
|
|
}
|
|
}
|
|
|
|
const screen_init_data : [u16] = [
|
|
msx.vdp.screen2.NAMETABLE_ADDRESS,
|
|
msx.vdp.screen2.TILESET_COLOR_RAM_ADDRESS,
|
|
msx.vdp.screen2.TILESET_PATTERN_RAM_ADDRESS,
|
|
msx.vdp.screen2.SPRITE_ATTRIBUTE_ADDRESS,
|
|
msx.vdp.screen2.SPRITE_PATTERN_ADDRESS,
|
|
];
|
|
|
|
const message = "HELLO WORLD";
|
|
const bkg_tileset = embed "hello_tiles.chr";
|
|
}
|