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Discussion Groups | FPGA-CPU | Xilinx SpartanXL
This list is for discussion of the design and implementation of field-programmable gate array based processors and integrated systems. It is also for discussion and community support of the XSOC Project (see http://www.fpgacpu.org/xsoc).
Xilinx SpartanXL - Author Unknown - Mar 22 13:03:00 2000
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I'm going to have a go at putting XSOC onto a little SpartanXL proto board I designed a few months ago. Until now I've been using the XCS05XL, which isn't big enough for XSOC, so I've just ordered an XCS10XL. I didn't have any problems getting XSOC placed and routed for the Spartan chip. I'll also need to add an SRAM, VGA port and parallel port to my board. Leon |
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Re: Xilinx SpartanXL - Jan Gray, Gray Research LLC - Mar 22 13:36:00 2000
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Hi Leon, welcome. If I'm not mistaken, I remember you from alt.comp.hardware.homebuilt in years past (before the PC clone folks overran the group.) Thanks for giving XSOC a spin. I have P&R'd XSOC/xr16 for SpartanXL (XCS10XL and XCS20XL) in the past, just to see how it fared. To my surprise, the cheaper SpartanXL family was considerably faster than XC4000XL: >>> From: Jan Gray To: ... Sent: Tuesday, August 17, 1999 3:00 AM Subject: 35 MHz! I just had the (very surprising and pleasant) experience of switching PAR from targeting an XC4005XL-3, which is ~$28 Q1, to an XCS10XL-4, ~15.85 Q1 (and supposedly $3 Q100K), and seeing my cycle time go down from ~43 ns to ~28 ns. It seems too good to be true! I suppose if you floorplan and so don't need the extra interconnect of the 4005XL (vs. the S10XL), the former is just bigger, fatter, slower, and more expensive. <<< One downside of the SpartanXL parts is they are not offered in the same variety of packages as the '4000XL. For example, there is no XCS20XL-PC84C. Regards, Jan Gray Gray Research LLC |
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Re: Xilinx SpartanXL - Leon Heller - Mar 23 3:33:00 2000
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Yes, it is I. I'm also playing about with Altera devices at home (a colleague of mine spends all his time working on them for our current project) so I might have a go later on at porting XSOC to that. The Altera FLEX 10K I'm using is about twice as expensive as the equivalent Spartan XCS10XL, unfortunately. BTW, you've obviously heard of the ARC core. I've known Jez San, who runs ARC, since he was a very spotty 14-year old. He used to belong to the TRS-80 users group I formed many years ago. Regards, Leon -- Leon Heller, G1HSM Tel (work): +44 1327 357824 Tel (mobile): +44 79 9098 1221 InfraRed Integrated Systems Ltd., Towcester Mill, Towcester, Northants., NN12 6AD, United Kingdom. Email: Web page: http://www.geocities.com/SiliconValley/Code/1835 ______________________________________________________ |
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Re: Xilinx SpartanXL - Tom Cantrell - Mar 23 9:17:00 2000
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BTW, news just in from the IP2000 conference is that ARC just bought VAutomation (misc. CPU & periph core IPs) and Spectrum Signal Processing (DSP and net protocol know-how). On the subject of 'porting', the availability of Verilog version of XSOC adds to the (long) list of interesting things to do & possible follow-on articles... Schematics vs. Synthesis Synthesizer 'A' vs. Synthesizer 'B' FPGA 'A' vs. FPGA 'B' As for the latter, also at IP2000 I met up with Actel who I'd kind of stuck on the 'antifuse religious war' shelf long ago. But sounds like they actually have some pretty neat parts, incl. Gatefield Flash-based FPGAs. The 'fine-grained' chips are ostensibly a 'no-brainer' fit with ASIC/gate array tool chains. Announced a deal where Mentor Graphics IPs are specifically available for Actel chips. Best, Tom Cantrell ----- Original Message ----- From: Leon Heller <> To: <> Sent: Thursday, March 23, 2000 12:33 AM Subject: [fpga-cpu] Re: Xilinx SpartanXL > Yes, it is I. I'm also playing about with Altera devices at home (a > colleague of mine spends all his time working on them for our current > project) so I might have a go later on at porting XSOC to that. The Altera > FLEX 10K I'm using is about twice as expensive as the equivalent Spartan > XCS10XL, unfortunately. > > BTW, you've obviously heard of the ARC core. I've known Jez San, who runs > ARC, since he was a very spotty 14-year old. He used to belong to the TRS-80 > users group I formed many years ago. > > Regards, > > Leon > > -- > Leon Heller, G1HSM > Tel (work): +44 1327 357824 Tel (mobile): +44 79 9098 1221 > InfraRed Integrated Systems Ltd., Towcester Mill, Towcester, Northants., > NN12 6AD, United Kingdom. > Email: > Web page: http://www.geocities.com/SiliconValley/Code/1835 > ______________________________________________________ > > |
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