Does anyone know the first address the 6502 goes to upon power up? I looked through 2 different data sheets to no avail.

Thanks in advance.

Jim,

The 6502 will read two addresses ($FFFC &FFFD) and jump to the address stored in them.

Example:
FFFC: 00 (low byte)
FFFD: FF (high byte)

Upon RESET, the 6502 will read $FFFC &FFFD then jump to $FF00 to begin execution.

Similarly, the value at $FFFE & FFFF are used for the IRQ jump vector and $FFFA & FFFB are used for the NMI jump vector.

Cheers!

Daryl