Subject: Re: [stella] Memory Map...another test request!! From: Chris Wilkson <ecwilkso@xxxxxxx> Date: Fri, 30 Jun 2000 02:47:28 -0400 (EDT) |
Thanks, a lot Eckhard! On Thu, 29 Jun 2000, Eckhard Stolberg wrote: > >But I need to run another test. I need to know if INPT5 can be > >read at the following addresses: $1D, $2D, $3D, $4D > > I tried to read INPT4 at $1C, $2C, $3C and $4C on my 7800 in 2600 mode > and all of the adresses work. I hope this answers your question anyway. Yep, that answers it. > >I also want to verify that VSYNC is available at $40. > > Yes that works too. Infact Tigervision accesses all TIA registers at > addresses between $40 and $7F, because the addresses below $40 trigger the > bankswitching mechanism. They use only address $3F for switching banks > though, because that address isn't used by the TIA as well. Ok, I had forgotten this. Yay! I think that does it for the TIA, and the ROM. Now I just need to work on the RIOT. The main map is complete...I'm just working on a nice RIOT document as an appendix. For those interested in the memory map project, take a look at the the URL below. This will eventually become part of a (somewhat massive) documentation archive for VCS hardware. The software stuff is pretty well documented, if difficult to find at times. I just bought a HP 6300CSE scanner today, so I'll be scanning in various magazine articles, data sheets, schematics, etc and adding them to the archive as time permits. Eventually, it'll have a more useful and organized format....first I want the files there. ;) Anyway, take a look at the files there, and please send me your bug reports, suggestions, or just random comments on the memory docs. There are 2 main files there, please let me know which is more useful. I'll be compressing the listing to fewer lines as time permits. http://www.mit.edu/~ecwilkso/VCS_hardware Thanks, -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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