Subject: Re: [stella] RAM usage From: Chris Wilkson <ecwilkso@xxxxxxx> Date: Wed, 21 Jun 2000 00:29:43 -0400 (EDT) |
On Tue, 20 Jun 2000, Glenn Saunders wrote: > At 09:45 PM 6/20/2000 -0400, you wrote: > >No. The 128 bytes of RAM are in addition to the register space. > > I thought that would be a little constraining, given that the designers > were contemplating 64 bytes of RAM at one time. > > Where is this memory stored then, inside the TIA? > > Also, isn't the 128 bytes considered the 6507's page zero as well? The 128 bytes of RAM are inside the RIOT..."RAM,I/O,TIMER" Yes the RIOT RAM is mapped into the 6507's address space at $80-$FF. The TIA registers are mapped into the other half of zero page at $0-$7F. -Chris -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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