[Coco] DE-1 Clarification Please

Sat Oct 28 19:39:52 EDT 2017

BTW, 4.2 Beta is Gary's beta release of the cycle accurate CPU. It has a few known bugs, mainly that it will not run at the 25hz speeds.

Bill Pierce
"Charlie stole the handle, and the train it won't stop going, no way to slow down!" - Ian Anderson - Jethro Tull

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-----Original Message-----
From: James Ross <jrosslist at outlook.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sat, Oct 28, 2017 6:42 pm
Subject: Re: [Coco] DE-1 Clarification Please

No... I didn't try 4.2 beta at all...  I am not at home on my PC right now (out and on my notebook)... let me log into Yahoo and I will let you know exactly which file I used. James________________________________________From: Coco <coco-bounces at maltedmedia.com> on behalf of tim franklinlabs.com <tim at franklinlabs.com>Sent: Saturday, October 28, 2017 10:38 PMTo: CoCoList for Color Computer EnthusiastsSubject: Re: [Coco] DE-1 Clarification Please   James,   Are you using version 4.2 beta?     On October 28, 2017 at 5:30 PM James Ross wrote:     I did try Kip's guide as well (I should have mentioned that, too). I     thought I followed it very closely ... but w/ no success.    It was only when I reversed the order that it took. But, it is     possible that I had done something else wrong before that, and it     has nothing to do w/ the order... maybe I did, but I don't believe I     did. But I did no further experimentation -- which I should have     done!     It should not be the fact that one must program their device     multiple times before it takes (not saying that you are implying     that either). Just saying, that there has got to be a precise     explanation of what folks are doing wrong and why that does not work     when they do that. And likewise there should be a precise guide that     will work every time w/o fail regardless from a fresh device or one     that has been used over and over.     James     _______________________________________     From: Coco on behalf of Bill Pierce via Coco     Sent: Saturday, October 28, 2017 9:35 PM     To: [1]coco at maltedmedia.com     Cc: Bill Pierce     Subject: Re: [Coco] DE-1 Clarification Please     James, I have programmed the pof and flash randomly (as far as     order) many times and it doesn't seem to make a difference, BUT...     if you search through the messages on the Coco3FPGA group, you'll   find that many people have had to program the unit several times     before it takes. I have had to do this myself at times. I don't know     if it's the programming software or the FPGA that's at fault, but it     does happen. I know someone (can't remember who) had to program     theirs several times before it finally worked.     As I stated on the group posts, the guide Kip wrote that's in the     Coco3FPGA group files has the most current steps for programming the     unit. Brian's guide is good, but outdated. It also doesn't include     programming for the analog boards.     Bill Pierce     "Charlie stole the handle, and the train it won't stop going, no way     to slow down!" - Ian Anderson - Jethro Tull     My Music from the Tandy/Radio Shack Color Computer 2 & 3     [2]https://sites.google.com/site/dabarnstudio/     Co-Contributor, Co-Editor for CocoPedia     [3]http://www.cocopedia.com/wiki/index.php/Main_Page     E-Mail: [4]ooogalapasooo at aol.com     -----Original Message-----     From: James Ross  To: CoCoList for Color Computer Enthusiasts     Sent: Sat, Oct 28, 2017 4:21 pm     Subject: Re: [Coco] DE-1 Clarification Please     Interesting Tim. Thanks for the*.sof advice, I did see a blurb about     that in the manual. Wikipedia talks about most flash devices lasting     ~ 100,000 cycles - but I've seen other places state as low as 10,000     ... Hopefully these DE1's are closer to the 100k! Thanks for your     previous answer on the programming order. I am going to play around     w/ it soon and see if I can confirm your statement that it does not     matter. I have no idea what was making my first 3 or 4 tries fail. I     am fairly certain that the guide at     [5]http://www.brianholman.com/retrocompute/files/coco3fpga.html if     followed verbatim does NOT result in a working system.Thanks again     for the info. James________________________________________From:     Coco on behalf of tim franklinlabs.com Sent: Saturday, October 28,     2017 7:56 PMTo: CoCoList for Color Computer EnthusiastsSubject: Re:     [Coco] DE-1 Clarification Please ...Oh one more thing... Pay close     attention on the number of times you program the flash *POF or ROM).     Flash has a limit on the number of times you can write to it before     it dies. It's write capability is very large but it does have a     limit. Use SOF files if you are experimenting. Most flash cards do     whats called "wear leveling" to increase the write cycles. I'm not     sure if the DE1 flash supports wear leveling. -Tim On October 28,     2017 at 1:58 PM James Ross wrote: Hey Tim, Thanks for this     clarification. Nice to know!! Since the day I got my DE1 to boot up     to the 3 amigos, I have not had time to play w/ it again. However, I     really want to get the process down pat, since I want to go     back-and-forth re-programming it with tutorials and the CoCo3FPGA.     Here is my question: does the order in which you program DE1 matter?     For example, the last few messages on the Yahoo group a couple of us     in that thread have determined that you must: 1) First program the     FLASH w/ the ROMS 2) Next program the CoCo3 FPGA *.pof file Since if     you reverse that order, programming the FLASH second, it will     clobber the *.pof file? Since apparently to program the FLASH,     regardless which control panel you use, the process must load a     *.pof file -- w/ the older control panel you have to do it manually,     w/ the newer control panel it does it automatically. *OR* am I/we     incorrect in that assessment? James ________________________________________ From: Coco on behalf of tim     franklinlabs.com Sent: Tuesday, October 24, 2017 9:58 PM To:     CoCoList for Color Computer Enthusiasts Subject: Re: [Coco] DE-1     Clarification Please The PROG/RUN switch enabled the write     capabilities of the on board FPGA flash device. NOT the FLASH RAM.     The FPGA doesn't retain anything when power is removed. You can send     the progtam directly to the FPGA (.sof) file and run it using the     programming tool. When power is removed, the FPGA forgets the     program. There's a "Config Flash" chip connected to the FPGA that     programs the FPGA automatically at power up. This flash is programed  by placing the RUN/PROG switch in PROG mode and sending the POF file     the same way you send the SOF file This is done with the programmer     tool (not the control panel). The control panel allows you to write     to the on board external flash. A totally seperate chip. This chip     is NOT connected to the RUN/PROG switch therefore the switch has no     affect on writing to it. On October 24, 2017 at 4:22 PM rcrislip     wrote: Trying to follow the various procedures to flash/program the     DE-1 is a little confusing for me. An answer to this question will     clear the fog tremendously. When using the Control Panel, is the     "prog/run" switch set to prog or run, likewise when using Quartus,     what position is the switch to be in? I think I know, but   conformation from you folks will help a lot. TIA RECrislip -- Coco     mailing list [1][1][6]Coco at maltedmedia.com     [2][2][7]https://pairlist5.pair.net/mailman/listinfo/coco References     1. mailto:[3][8]Coco at maltedmedia.com 2.     [4][9]https://pairlist5.pair.net/mailman/listinfo/coco -- Coco     mailing list [5][10]Coco at maltedmedia.com     [6][11]https://pairlist5.pair.net/mailman/listinfo/coco -- Coco     mailing list [7][12]Coco at maltedmedia.com     [8][13]https://pairlist5.pair.net/mailman/listinfo/cocoReferences 1.     mailto:[14]Coco at maltedmedia.com 2.     [15]https://pairlist5.pair.net/mailman/listinfo/coco 3.     mailto:[16]Coco at maltedmedia.com 4.     [17]https://pairlist5.pair.net/mailman/listinfo/coco 5.     mailto:[18]Coco at maltedmedia.com 6.     [19]https://pairlist5.pair.net/mailman/listinfo/coco 7.     mailto:[20]Coco at maltedmedia.com 8.     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