2 ms·
I think it is possible to get exactly 64Kb - 2 byte. The first two byte should not be written randomly as they tell the system whether it should include the RO
by s-macke 13y ago
I think it is possible to get exactly 64Kb - 2 byte.
The first two byte should not be written randomly as they tell the system whether it should include the ROM or not.
If you use interrupts then the top few bytes (2 or 4 bytes, can't remember) are also occupied by a jump addresses.
- cromwellian 13y agoTop 6, $FFFA-$FFFB and $FFFE-$FFFF were NMI and IRQ. $FFFC-$FFFD are the 'cold start' address that's run on reset, although as you point out, if you're not using them, they are free RAM.