tag:blogger.com,1999:blog-1941724879591935666.comments2023-05-03T10:40:19.553+01:00Dave's Z80 JourneyDavehttp://www.blogger.com/profile/17357814190097545183noreply@blogger.comBlogger48125tag:blogger.com,1999:blog-1941724879591935666.post-6104772648917785142021-08-26T15:12:37.059+01:002021-08-26T15:12:37.059+01:00It should be noted that whilst ordering papers for...It should be noted that whilst ordering papers for sale at paper writing service, <a href="https://www.totonara1.com/" rel="nofollow">토토</a><br />Jacky Cheinhttps://www.blogger.com/profile/01008581230843051057noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-56241258681913508222021-08-25T10:45:30.517+01:002021-08-25T10:45:30.517+01:00I truly appreciate this post. I’ve been looking al...I truly appreciate this post. I’ve been looking all over for this! Thank goodness I found it on Bing. You have made my day! Thank you again! <a href="https://totolok.com/" rel="nofollow">토토사이트</a><br />Smith Karloshttps://www.blogger.com/profile/16052407682694324233noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-30379334418111261212021-08-24T11:00:15.511+01:002021-08-24T11:00:15.511+01:00I just stumbled upon your blog and wanted to say t...I just stumbled upon your blog and wanted to say that I have really enjoyed reading your blog posts <a href="https://xn--p22b05r36an50a.kr/" rel="nofollow">먹튀검증</a><br />Smith Karloshttps://www.blogger.com/profile/16052407682694324233noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-62583444766463452322021-05-27T15:05:23.583+01:002021-05-27T15:05:23.583+01:00To take a screenshot of simply the active home win...To take a screenshot of simply the active home window on your screen, hold back the Alt secret as well as press PrtScn. <a href="https://gtasiaseries.livejournal.com/365.html" rel="nofollow">토토사이트</a><br />Remaid Davishttps://www.blogger.com/profile/00864462136203621985noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-13526384473330145272020-09-25T16:17:48.806+01:002020-09-25T16:17:48.806+01:00you are totally right! I need to see if I still ha...you are totally right! I need to see if I still have the Fritzing Project files for that. However there may be a better way to do it as most modern programmable ROMs use I²C or SPI, and require only 3 connections.Davehttps://www.blogger.com/profile/17357814190097545183noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-63863704762797163482020-09-24T15:40:20.349+01:002020-09-24T15:40:20.349+01:00Shit Man .......
When building it using the diagra...Shit Man .......<br />When building it using the diagram it is impossible to work. This is because wrong connectioning the SN72LS04. Outputs and Inputs of the invertergates are used wrong. Steven Verhoefhttps://www.blogger.com/profile/04946601729568212836noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-5543580935604017062019-09-19T22:04:32.307+01:002019-09-19T22:04:32.307+01:00Hi there
I've been reading his useful page a f...Hi there<br />I've been reading his useful page a few times now and I have a question, given my ignorance on the subject!<br />I need to flash an ATMEL AT29C020 and I have an Arduino DUE. The Atmel seems to be very similar to the one you're using here but the datasheet mentions 5V operations while the DUE only works at 3.3V - even though it has a 5V output that can be used.<br />I'm just wondering whether this project would work with my hardware?<br />Thanks!Tony359https://www.blogger.com/profile/02063093181600637563noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-84595488990522631572017-11-17T20:18:31.566+00:002017-11-17T20:18:31.566+00:00This comment has been removed by the author.Frankhttps://www.blogger.com/profile/03624482959058461494noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-1031375239931147442017-11-02T08:37:01.313+00:002017-11-02T08:37:01.313+00:00wowwowAnonymoushttps://www.blogger.com/profile/18263088342031541466noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-26253887044541049302017-02-27T20:58:23.349+00:002017-02-27T20:58:23.349+00:00Shame you didn't continue with your blog.Shame you didn't continue with your blog.TheArduinoGuyhttps://www.blogger.com/profile/02536383396661428723noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-18459589651059236552016-09-07T03:05:59.486+01:002016-09-07T03:05:59.486+01:00Ok, I'm embarrassed to say that I answered my ...Ok, I'm embarrassed to say that I answered my own question. Your linix script... Will give that a try!Anonymoushttps://www.blogger.com/profile/16695030839637737765noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-61830312301755327442016-09-07T01:06:29.877+01:002016-09-07T01:06:29.877+01:00Dave, thanks for the reply.
I modified your read ...Dave, thanks for the reply.<br /><br />I modified your read code to where it outputs the values separated with commas. From there I can import into a spreadsheet and from there into a hex editor. The part I'm still not clear of is how to upload it back. Third party upload software? Or through the Arduino serial monitor? If so, what format? Sorry for the trivial questions but this is a little over my head. Can't figure it out. <br /><br />Thanks again.Anonymoushttps://www.blogger.com/profile/16695030839637737765noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-11313607100037658502016-08-31T20:56:16.047+01:002016-08-31T20:56:16.047+01:00Hi Max,
you could create a byte programmer to patc...Hi Max,<br />you could create a byte programmer to patch your eeprom and that gives me a great idea for a new project as it been quite a while since I posted anything, but to answer your question, with this code, you'd have to dump the eeprom to a file, edit the bytes using a hex editor, and then load it back in again.Davehttps://www.blogger.com/profile/17357814190097545183noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-3566229480838463282016-08-31T01:57:14.135+01:002016-08-31T01:57:14.135+01:00Thanks for putting this up, I was able to read my ...Thanks for putting this up, I was able to read my EEPROM. I wasn't sure about writing it back though. Not sure what format it needs to be in. I need to change a few values. Do I just read the chip, copy and paste into a text file from the serial window, change the values in a text editor, paste that into the serial window, and write it? I'm guessing the answer is no and I need to import it into a hex editor. However the format is not correct to import into a hex editor unless I do it line by line. Thanks, MaxAnonymoushttps://www.blogger.com/profile/16695030839637737765noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-76521426852468954312016-06-14T11:04:36.452+01:002016-06-14T11:04:36.452+01:00Yes you are correct, green wires should be pins 1,...Yes you are correct, green wires should be pins 1, 3 and 5 and purple wires 2, 4 and 6. Well done for finding that but I'm sorry but there is no prize for "Spot the deliberate mistake." :DDavehttps://www.blogger.com/profile/17357814190097545183noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-38519352495288748382016-06-12T15:43:26.779+01:002016-06-12T15:43:26.779+01:00Sorry Dave, your schematic seems wrong.
Please che...Sorry Dave, your schematic seems wrong.<br />Please check pinout of LS04 chip.<br />Markushttps://www.blogger.com/profile/11702048314635671916noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-58398904217289244352015-11-30T00:01:05.063+00:002015-11-30T00:01:05.063+00:00Can you please post a circuit diagram for this.Can you please post a circuit diagram for this.xav2075https://www.blogger.com/profile/16537354926720974825noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-49074356830737221122015-10-20T14:22:40.980+01:002015-10-20T14:22:40.980+01:00it wasnt necessary to provide a starting value to ...it wasnt necessary to provide a starting value to ABCD were not connect and the counters increased by pulsing the UP input.Davehttps://www.blogger.com/profile/17357814190097545183noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-66418596004695189092015-10-20T12:13:57.358+01:002015-10-20T12:13:57.358+01:00why dont you have inputs in ABCD or did the up co...why dont you have inputs in ABCD or did the up counter input did the work?Anonymoushttps://www.blogger.com/profile/15902713183718731568noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-10755840993118895112015-08-25T02:09:30.548+01:002015-08-25T02:09:30.548+01:00Very nice breadboard you are using, where did you ...Very nice breadboard you are using, where did you find that?Kalunhttps://www.blogger.com/profile/01684471991604163779noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-52004470127843217632015-07-30T10:45:52.723+01:002015-07-30T10:45:52.723+01:00Thanks for posting this up - I had been searching ...Thanks for posting this up - I had been searching the web for a bin -> 7-seg display that shows 0-9,A-F and stumbled the same road block as you (the 74 series only did 0-9). I might have a look at this solution and build it.Philbywhizzhttps://www.blogger.com/profile/05095819580344233085noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-35353730928369846152015-02-08T02:33:05.215+00:002015-02-08T02:33:05.215+00:00In theory, you have 4 digit RAM and I have 8. So I...In theory, you have 4 digit RAM and I have 8. So I was wondering if you had SIMM, because I have DIMM. It makes sense to me that DIMM ment two 4 digit machine codes per line?Anonymoushttps://www.blogger.com/profile/06246672439715067395noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-59427109949368826242014-11-28T13:09:17.240+00:002014-11-28T13:09:17.240+00:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/15281986157836711522noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-20760738948874653932014-04-10T12:25:54.404+01:002014-04-10T12:25:54.404+01:00Thanks Dave, I got this working pretty much straig...Thanks Dave, I got this working pretty much straight away once I figured I'd wired the NOT gates incorrectly. I changed the program to embed the data in the code for ease. It's also for a Z80 homebrew. I think I'll create a soldered strip board, as I suspect I'll be change the code very often. SashaBiltonhttps://www.blogger.com/profile/04638189692839607836noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-59190153966704936362014-02-26T20:55:54.902+00:002014-02-26T20:55:54.902+00:00I just looked at the specs, and you're right, ...I just looked at the specs, and you're right, they're only 3.3V. I've never tried the logic inputs, so this has passed me by. A good excuse to buy something better :)Davehttps://www.blogger.com/profile/17357814190097545183noreply@blogger.com