Subject: Re: [stella] 2600 on-a-Chip new site From: "Carlos Lopez" <carlosflr@xxxxxxxxxxxxxxxx> Date: Wed, 21 Aug 2002 20:38:00 -0500 |
----- Original Message ----- From: "Glenn Saunders" <cybpunks@xxxxxxxxxxx> To: <stella@xxxxxxxxxxx> Sent: Wednesday, August 21, 2002 6:53 PM Subject: RE: [stella] 2600 on-a-Chip new site > > I can't believe the TIA is actually done after so many years of speculation > on the feasibility of doing it. It looks a lot simpler in FPGA than the > real thing does! Congrats!! I just wonder how accurate it is in emulating > all the subtleties like cosmic ark stars et. al... I also wonder whether > Thanks!! I was very careful about designing a 100% compatible TIA hardware. I haven't tested Cosmic Ark yet. I'm writing a script that will allow a 4K bin to be inserted in a VHDL code to initialize the FPGA internal BlockRAM. This will let me test more carts than I have available. I will post my results as soon as I finish something. > this was done via Curt's schematics or not? I did use Curt's schematics. I used them to generate a TIA schematic using Xilinx library components. This allowed me to simulate the TIA in Modelsim, which gave me a better comprehension of the TIA internal hardware. The final TIA design was written entirely in VHDL, because I wanted a portable and efficient core. Carlos Lopez ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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