Subject: Re: PCI/USB Date: Mon, 10 Jan 2000 14:05:28 From: " " mcjy at m...> To: khatib at i... CC: Hi! Thanks for your email. For the PCI core project, I would expect it take six months to get a basic model. (Depending on how many people. My estimation is 5 people) It sounds like a very long time but organising a project on the internet is very different from normal project. All of us have a full time job so we can only spend around 6 to 10 hours each week. ============================================== First we do not have to count anyone in the project to work as full time job or even as part time but as "spare time". Also we have no time restriction although it is good idea to have a fixed time schedule. =============================================== I guess we can use one month to develop the block diagrams and configuration of the project (as you know, we will need sometime for people to feedback) and several generation of the block diagrams would be developed in this month. Then we will focus on the detail spec of each block. We might need to think of some of the interaction between block in the early planning stage, but it really depends on situation. Then we will need two month at least to develop the block and then combine them and carry out testing in simulation. At this moment I still wonder how we can test our design. I believe that the prototyping board from Altera ============================== Or even we can do a board for us ================================= should be very useful but if we want to do the test in real circuit we will also need to develop device driver. ====================================== I agree the device driver should be an important part of our project. ====================================== About the PCI specification : I think we will work on PCI 2.2 64 bit extension is only one of the feature support in PCI 2.x, but it is ok to develop 32 bit core for PCI 2.2 (and I think it would be much easier to start with).

Iagree the first block should be PCI2.2 32bit controller

PCI specification said a device should be able to run from 66MHz to 0MHz. But the hardware performance requirment of 66MHz system maybe too high (difficult to prototype), so maybe we need to work on 33MHz design first. PCI-X is 133MHz PCI. I don't know if its specification is released yet. It is develop by Compag, and a few other PC companies. WIth current performance in FPGA, I guess it is almost impossible for us to prototype. Compact PCI is based of PCI 2.x and it support hot swap. It have extra requirment on the pins implementation (the pins must be tristate during the hot swap process). ============================== I have a good link about PCI core at http://www.tkt.cs.tut.fi/~havu/pci/models.shtml ==================================== I haven't look at USB yet. Write to you again later. Have a nice day. from Joe -- On 10 Jan 00 09:33:15 Asia/T jamil khatib wrote:
I have to

PCI members,



=====================================================

>Hi,
>Before we start the work in the cores design we have to define

>We should get information about PCI and USB standards and

>posted few links the last time and I still looking for more) I

>proved that we are able to develop a good system may be we can

>support from the PCI or USB groups and I'll try to contact them

>the specs or test suits.
>Documentation: text files is the most portable format or latex

>write our design documentation instead of the MS stuff that are

>The project should be divided into small subprojects for

>: the main controller, the optional blocks, the arbiter and

>Development platform: we need to make our platform as much as

>and platform independent and it will be excellent if we port it

>platforms.
>Project schedule:

>

>could you please comment on the schedule
>as a first step we have to understand the diff between the

>standards (e.g. PCI64/66MHz, PCI-X, CompactPCI- USB v1 &

>optional and required features of the busses. > >Thanks >Jamil Khatib >OpenIP Organization http://www.openip.org >OpenIPCore Project http://www.openip.org/oc >OpenCores Project http://www.opencores.org > >