[Coco] DriveWire on the DE1

[sales at gimechip.com]

Gary,
I wonder how difficult it would be to interface 2-megs of Static RAM to one 
of the expansion headers? I'll see if I can find a schematic for the DE1 - 
if it isn't to difficult, perhaps I could create a plug in 2meg SRAM for the 
DE1. That would be cool :-)
-John
----- Original Message ----- 
From: "Becker, Gary" <Gary.Becker at amd.com>
To: <coco at maltedmedia.com>
Sent: Sunday, June 13, 2010 1:29 PM
Subject: [Coco] DriveWire on the DE1


>
> The DE1 has a few features that the Digilent Spartan 3 Starter board does 
> not have. Most are not supported, but when I get the time I will include 
> these. First is the microphone input and speaker output. I have not looked 
> into this feature, but would like to include it. The analog board I built 
> for the Spartan 3 board has stereo speaker outputs. Second is the SD Card 
> slot. It appears that this will need to be interfaced using SPI. Lastly 
> the DE1 has 8 Meg of SDRAM. I really do not want to interface this to the 
> 6809 because it would slow it down so much. SDRAM is not random access, so 
> the CPU would have to wait until the memory was ready. I am thinking of 
> using it as a 8M RAM disk. In that application it should be fairly easy to 
> interface.
>
> The Spartan 3 Starter board has 1 Meg of SRAM compared to the DE1 with 
> 512K. I have the analog board that supports the stereo speaker output, 
> second serial port that I use for a serial mouse under NitrOS9, and a 
> Joystick port. The Joystick port supports two PC type joysticks.
>
> A couple of other things I have been forgetting. I want to thank Boisy for 
> the DW interface. It was his specification that I followed. He also wrote 
> the DW driver in less than a day. Also, Aaron has been a solid resource 
> for development. He loaned me his DE1 for a while during early 
> development. And has spent countless hours testing different builds. He 
> has found most of the bugs. Boisy, Aaron, and Mark have been great 
> resources to bounce ideas off of.
>
> Gary
>
>
> --------------------------------------------------------------------------------
> On Sun, 13 Jun 2010, Becker, Gary wrote:
>
>
>> For the last few days I have been doing everything on the DE1. I will
>
>> update everything for the Xilinx Spartan 3 platform in a few days. Since
>
>> I have my Sound, Joystick port, and second serial port analog board on
>
>> the Xilinx platform, I do a lot with it. But when we get all the
>
>> features of the DE1, sound / SD card, it will be hard to beat.
>
>
> So, there will be some peripheral hardware specific for the DE1? Where
> can I find discussion of this?
>
>
>> But I
>
>> intend on supporting all features that the hardware supports on both
>
>> platforms.
>
>>
>
>> I will post the latest builds for the DE1 on the Yahoo group in a day or
>
>> so. And will post the builds for the Xilinx boards when I get it
>
>> working.
>
>
> I'm sort of in a quandry on direction. I really hate to get locked into a
> development environment that runs only on Windows, since I have to fire up
> a second machine for that purpose.
>
> Has anyone successfully run Quartus under VMware on a Linux host?
>
> Steve
>
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco


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