Software › Starfield demo

Starfield demo

demo Open · freely redistributable

A minimal Atari 2600 demo that animates a scrolling starfield, written as a TIA test case for the 6502.ts emulator (aux/2600/starfield) and covered by the project’s MIT licence. Its continuous main loop makes it a good subject for watching the 6507 run: single-step through the kernel, or set a breakpoint and watch the star positions update in the PIA RAM.

Download ↓ Original source ↗

Format: Atari 2600 ROM (.bin), plain 4 KB cartridge · By: Christian Speckner · Licence: MIT

Runs on

Atari 2600

Atari 2600 Jr

Preview

First 512 bytes of file — offset, bytes, ASCII.

00000000  78 D8 A2 FF 9A A9 00 95 00 CA D0 FB A9 A0 85 0D  x...............
00000010  A9 55 85 0E A9 AA 85 0F A9 02 85 08 A9 07 85 81  .U..............
00000020  A9 02 85 00 85 01 85 02 85 02 85 02 A9 38 8D 96  .............8..
00000030  02 A9 00 85 00 A9 80 2C 82 02 D0 07 A9 E2 85 80  .......,........
00000040  4C 4A F0 38 A9 E2 E9 30 85 80 A9 02 85 1D A9 0E  LJ.8...0........
00000050  85 06 85 07 85 02 85 13 85 02 85 12 A9 70 85 22  .............p."
00000060  85 02 85 2A A9 90 85 22 AD 84 02 D0 FB A9 00 85  ...*..."........
00000070  01 85 02 A6 80 8A A0 00 85 02 24 81 D0 02 A0 02  ..........$.....
00000080  84 09 CA D0 F0 A9 02 85 01 A2 24 85 02 CA D0 FB  ..........$.....
00000090  4C 20 F0 FF FF FF FF FF FF FF FF FF FF FF FF FF  L ..............
000000a0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000000b0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000000c0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000000d0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000000e0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000000f0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000100  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000110  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000120  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000130  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000140  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000150  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000160  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000170  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000180  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
00000190  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000001a0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000001b0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000001c0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000001d0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000001e0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
000001f0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ................
…(3584 more bytes)