| Author |
Message |
Forum: Hardware Topic: 25MHz 3.3V 6502 Prototype computer |
| plasmo |
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Posted: Tue Apr 16, 2024 10:58 pm
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Replies: 3
Views: 10355
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| Arlet has a CPLD-6502 that fits four XC9572XL so it should fit EPM570 with resource left over for SBC support functions. That should be an interesting project in itself. What I am currently working on is VGA beam racing 6502 at 25.175MHz, an ... |
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Forum: Hardware Topic: Acolyte '816 SBC |
| sburrow |
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Posted: Thu Jan 18, 2024 11:00 pm
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Replies: 25
Views: 4824
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| ... with a mix of surface mount and through-hole components. I used solder paste and a skillet for the QFP packages (the 65816, the 6522, and the XC9572XL CPLD). Those were the easy ones! The rest are mostly SOIC packages which I soldered by hand. The two 512KB RAM chips are SOJ and that was much ... |
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Forum: Hardware Topic: New Acolyte using CPLD |
| sburrow |
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Posted: Fri Aug 04, 2023 4:14 pm
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Replies: 22
Views: 7373
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| Hey everyone! Welcome to the New Acolyte! It uses the Xilinx XC9572XL CPLD to reduce the chip count considerably. Here are some specs: - 65C02 running at 6.29 MHz, double the speed of the original Acolyte. - It currently has 64KB of RAM available and 32KB ... |
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Forum: General Discussions Topic: SMT/SMD, 3V3, and CPLD Routing Tips? |
| sburrow |
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Posted: Fri Aug 04, 2023 12:44 am
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Replies: 43
Views: 17075
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| ... outcome! Here are the steps in brief, just so others will know: 1) I got a thin steel stencil for the QFP-44 10x10mm part matching my Xilinx CPLD XC9572XL part. I also got "no clean" leaded solder paste with a melting point of around 360 degrees Fahrenheit. I put the solder paste in ... |
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Forum: Hardware Topic: Olimex Open Source Modern Retro computer with W65C02 |
| cjs |
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Posted: Sun Jun 25, 2023 5:39 am
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Replies: 30
Views: 6084
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| ... $0.70 RP2040 is the way to go? Or are you trying to use a much less powerful CPLD instead, in which case you replace the RP2040 with, say, a $10 XC9572XL plus a few dollars more for the RAM? It's a good point that the W65C02, at $10, is by far the largest chunk of the BOM. Drop that and just ... |
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Forum: Programmable Logic Topic: Current CPLD's using Linux? Yep! |
| cjs |
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Posted: Sat Jun 24, 2023 1:42 am
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Replies: 13
Views: 7191
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| For what it's worth, I have some notes on programming the XC9572XL from Linux in this Xilinx Development Tools document. This uses the Xilinx ISE software and a userland replacement for Windriver6 mentioned here . The replacement driver talks to the programmer ... |
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Forum: Hardware Topic: VGA Serial Module |
| sburrow |
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Posted: Fri Apr 07, 2023 6:56 pm
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Replies: 33
Views: 2376
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| ... possible, but I'm always on the lookout to reduce chip count :) Would like to see this in action. Thanks for sharing Neil! I used the Xilinx XC9572XL, and did everything in Linux I bookmarked all of that. I took a quick look and I see you are using a Raspberry Pi. Happily, I actually own ... |
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Forum: Hardware Topic: VGA Serial Module |
| Arlet |
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Posted: Fri Apr 07, 2023 3:28 pm
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Replies: 33
Views: 2376
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| ... building in 6502-land, they pretty much need one for their ROM's anyways). For my project that implements a 6502 in 4 CPLDs , I used the Xilinx XC9572XL, and did everything in Linux. I do have an original Xilinx JTAG programmer though, but there may be more hobbyist friendly ways to get the ... |
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Forum: Programmable Logic Topic: Is XC9572XL programmable with 5 volts? |
| fabbrimichele75 |
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Posted: Fri Feb 03, 2023 8:12 pm
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Replies: 4
Views: 6151
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| Thank you Fachat, I'm going to program the xc9500xl usi a raspeberry pi and xc3sprog to be on the safe side. I found a couple of nice tutorials for that: https://blog.jimmo.id.au/2018/11/26/programming-a-xc9500xl-cpld-with-a-raspberry-pi.html https://linuxjedi.co.uk/2021/11/25/revisiting-xilinx-jtag... |
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Forum: Programmable Logic Topic: Is XC9572XL programmable with 5 volts? |
| fachat |
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Posted: Wed Feb 01, 2023 10:49 pm
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Replies: 4
Views: 6151
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| I am using the xc9500xl series too with 5V signals. However to program them I use a Xilinx programmer, that uses a separate pin to sense the supply voltage. So, by default the programming interface pins are used with 3.3V. I wouldn't recommend programming it with 5V, but the datasheet should be your... |
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Forum: Programmable Logic Topic: Is XC9572XL programmable with 5 volts? |
| fabbrimichele75 |
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Posted: Wed Feb 01, 2023 10:26 pm
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Replies: 4
Views: 6151
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Thank you Garth Wilson.
I had a look before posting but I couldn't find anything, I'm gonna double check. |
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Forum: Programmable Logic Topic: Is XC9572XL programmable with 5 volts? |
| GARTHWILSON |
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Posted: Wed Feb 01, 2023 10:06 pm
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Replies: 4
Views: 6151
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Forum: Programmable Logic Topic: Is XC9572XL programmable with 5 volts? |
| fabbrimichele75 |
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Posted: Wed Feb 01, 2023 10:03 pm
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Replies: 4
Views: 6151
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| Hi there, I hope this questions wasn't already asked but I couldn't find an answer yet. I've been thinking of programming a XC9572XL with an arduino and JTAGWhisperer (https://github.com/sowbug/JTAGWhisperer). What I can't understand is if the XC9572XL has JTAG pins 5 volts compatible ... |
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Forum: General Discussions Topic: 65c51 or 6551 ACIA microcontroller or SoC Emulators? |
| jmthompson |
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Posted: Mon Oct 04, 2021 3:18 am
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Replies: 27
Views: 2059
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| ... rather than messing around with a Pico. I am hoping to jam it into a 1504, but if that's too tight there's also the possibility of using a 72 MC XC9572XL (3.3V, but 5V tolerant). The only downside to the 9572XL is that it isn't available in PLCC-44 anymore, but the TQFP-44 isn't too hard to solder; ... |
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Forum: Newbies Topic: 65c816 address decoding help |
| jmthompson |
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Posted: Fri Apr 03, 2020 5:45 pm
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Replies: 85
Views: 5618
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| ... got backburnered like so many of our projects.) I've successfully burned André Fachat's VHDL version of Daryl's design onto current hardware (an XC9572XL) and it works great. His code is at http://www.6502.org/users/andre/spi65b/index.html . The XC9572XL is a 3.3V chip (as is my entire SBC) but ... |
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