GXemul Code2

machine, for fun. Disassembly support for all instructions,
and most of the common instructions have been implemented:
mvi, mov_imm, add_imm, jmp, rand, cls, sprite, skeq_imm, jsr,
skne_imm, bcd, rts, ldr, str, mov, or, and, xor, add, sub,
font, ssound, sdelay, gdelay, and bogus skup/skpr.
(No support for actual sound yet, and no keyboard stuff.)