Subject: re: [stella] Atari memory From: "Lee Fastenau" <stella@xxxxxxxxxxxxxxx> Date: Tue, 1 Mar 2005 12:08:43 -0500 |
> I see most games start their execution at 0xF000. Does the 2600 really > have 64 kB of memory? > > Andri Actually, the Atari 2600 only has 128 bytes of built-in RAM located between $80 and $FF. Addresses between $00-$7F refer to hardware registers. ROM addresses just happen to begin at $F000. The CPU is only capable of addressing 4K of ROM, but later, more advanced cartridges took advantage of bank switching to store more program data, so today you could actually find 64K bank-switched carts. -Lee Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://stella.biglist.com
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