Software › Varvara colour + sprite demo

Varvara colour + sprite demo

A self-authored, public-domain Uxn ROM (98 bytes). Its reset vector sets the four-colour Varvara palette and installs a screen vector; that vector runs once per frame to fill the four screen quadrants with colour and blit an animated 8x8 diamond sprite that sweeps across the display. It exercises the System palette registers and the Screen device pixel-fill and sprite-blit ports, and its short, looping vector is an ideal target for the debugger: set a breakpoint on a PC, single-step the stack machine one opcode at a time, and watch the device page change.

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Format: Uxn ROM (.rom), loads at $0100, 98 bytes  ·  By: emulators.org  ·  Licence: Public domain

00000000  A0 1D 2E 80 08 37 A0 12 DE 80 0A 37 A0 34 63 80  .....7.....7.4c.
00000010  0C 37 A0 01 19 80 20 37 00 A0 01 00 80 28 37 A0  .7.... 7.....(7.
00000020  00 A0 80 2A 37 80 B1 80 2E 17 80 A2 80 2E 17 80  ...*7...........
00000030  93 80 2E 17 80 82 80 2E 17 80 02 10 01 80 02 11  ................
00000040  80 00 80 02 10 80 28 37 A0 00 96 80 2A 37 A0 01  ......(7....*7..
00000050  5A 80 2C 37 80 0F 80 2F 17 00 18 3C 7E FF FF 7E  Z.,7.../...<~..~
00000060  3C 18                                            <.