+Ksarul Posted October 2, 2017 Share Posted October 2, 2017 (edited) You have just given me my next drawing project. . .I'll transfer this into Visio and build a nice crisp schematic from it. It is also good that I have a Percom box to validate against. I can do the same with the FLUG diagram--and it may have been a variant of the TI DSDD card that used the NEC 765. I'd have to dive into the schematics and compare them to be sure. . . Edited October 2, 2017 by Ksarul 1 Quote Link to comment Share on other sites More sharing options...
RickyDean Posted October 2, 2017 Share Posted October 2, 2017 You have just given me my next drawing project. . .I'll transfer this into Visio and build a nice crisp schematic from it. It is also good that I have a Percom box to validate against. I can do the same with the FLUG diagram--and it may have been a variant of the TI DSDD card that used the NEC 765. I'd have to dive into the schematics and compare them to be sure. . . I will scan the FLUG schematics tonight and upload them in the morning then. Glad to help promote our machine Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted October 2, 2017 Share Posted October 2, 2017 Also, if you could include a bitmap of the rest of the Percom card before the initial enhancement work, that would be useful as well. The bitmap you included helps eliminate some ambiguities that show up as enhancement artifacts, as some of the component numbers go from being barely comprehensible to total head scratchers. Others aren't readable on either--but I've been able to suss out enough that I'm sure I can build a good one from this. One oddity that I will have to compare to my card though--it looks like they weren't using 74LS244s to buffer the address lines per the diagram, but I thought they did on the board. More nice things to look at. Thanks for scanning the other diagrams as well. My eventual goal is to have nice diagrams for every card out there, but that is a long-term project, as I've only completed about 25 pages of schematics in the last year. Quote Link to comment Share on other sites More sharing options...
RickyDean Posted October 2, 2017 Share Posted October 2, 2017 Also, if you could include a bitmap of the rest of the Percom card before the initial enhancement work, that would be useful as well. The bitmap you included helps eliminate some ambiguities that show up as enhancement artifacts, as some of the component numbers go from being barely comprehensible to total head scratchers. Others aren't readable on either--but I've been able to suss out enough that I'm sure I can build a good one from this. One oddity that I will have to compare to my card though--it looks like they weren't using 74LS244s to buffer the address lines per the diagram, but I thought they did on the board. More nice things to look at. Thanks for scanning the other diagrams as well. My eventual goal is to have nice diagrams for every card out there, but that is a long-term project, as I've only completed about 25 pages of schematics in the last year. Well I did have 4 pages of the same schematic, scanned all of them a half page at a time due to the fact that they were about 17 x 11 inch drawings. They were identical, except one that had a hand written correction on it. When I save them all as jpg's, I will upload them the same as these. Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted October 2, 2017 Share Posted October 2, 2017 Many thanks! That helps a lot when doing diagram reconstructions. 1 Quote Link to comment Share on other sites More sharing options...
RickyDean Posted October 3, 2017 Share Posted October 3, 2017 (edited) Here are the scanned pdf schematics of 3 controllers. The first 'Percom' scans are basically the same, except there are different levels of detail in each, due to age and deterioration. The one labeled Percom 4 has a pinned in mod added. The TI pdf could be a planned DSDD controller, or maybe the existing one, I don't know for sure, haven't studied it yet. The FLUG pdf was scanned from a set of schematics that had looked like bad copies from another, but they are fairly readable and something could be created from them, seems to be based on a pd765 controller chip? Percom1a.pdf Percom1b.pdf Percom2a.pdf Percom2b.pdf Percom3a.pdf Percom3b.pdf Percom4a.pdf Percom4b.pdf TIDC-prod 360 1a.pdf TIDC-prod 360 1b.pdf TIDC-prod 360 2a.pdf TIDC-prod 360 2b.pdf FLUG DSDD.pdf Edited October 3, 2017 by RickyDean 5 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted October 3, 2017 Share Posted October 3, 2017 These will help a lot. The Product 360 Disk Controller is the standard PEB DSSD card. You can compare it to the ones on Mainbyte to verify any possible differences, but that looks like the ones I know for that card. The FLUG DSDD schematics are the schematics for the TI DSDD card. I put the manual for it up on WHT a few years ago--but I didn't have a standard schematic set to go with it. I have some hand-drawn stuff on it though, along with one of the original cards, so I should be able to restore it. Many thanks for taking the time to scan these, as it gives me more fun things to work on (I've already started on the Percom schematics). 4 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted October 26, 2017 Share Posted October 26, 2017 Here's the cleaned-up Percom schematic. A3-Percom FDC-P1.pdf 4 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted November 7, 2017 Share Posted November 7, 2017 Here's the next bit of schematic fun. I went through the FLUG DSDD controller schematics to turn the somewhat sketchy, late-generation-photocopy diagrams of the TI DSDD controller shown there into a clear set of schematics. That was a lot of head-scratching fun at several points in the process. I had several points where neither the old schematic nor the specifications for the TI DSDD controller could bring clarity. I will need to pull out one of my TI DSDD controller boards and do some careful trace comparisons to eliminate the final ambiguities, but for now, here is the much-improved TI DSDD controller schematic set. Each remaining ambiguity is identified with a note (there are three of them between the two pages of the schematic). I was able to condense it from three pages to two, and based on the part number in the specification, I also changed the schematic number to match the one listed in the specification, as that way people looking at both documents will be sure that they belong together. A3-TI DSDD-FDC-P1.pdf A3-TI DSDD-FDC-P2.pdf 8 Quote Link to comment Share on other sites More sharing options...
RickyDean Posted November 7, 2017 Share Posted November 7, 2017 Here's the next bit of schematic fun. I went through the FLUG DSDD controller schematics to turn the somewhat sketchy, late-generation-photocopy diagrams of the TI DSDD controller shown there into a clear set of schematics. That was a lot of head-scratching fun at several points in the process. I had several points where neither the old schematic nor the specifications for the TI DSDD controller could bring clarity. I will need to pull out one of my TI DSDD controller boards and do some careful trace comparisons to eliminate the final ambiguities, but for now, here is the much-improved TI DSDD controller schematic set. Each remaining ambiguity is identified with a note (there are three of them between the two pages of the schematic). I was able to condense it from three pages to two, and based on the part number in the specification, I also changed the schematic number to match the one listed in the specification, as that way people looking at both documents will be sure that they belong together. Oh yes, much improvement, thanks for your hard work and dedication, put into bringing these back to life. 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted November 7, 2017 Share Posted November 7, 2017 Also, I have a general question: A lot of the original TI schematics had a first page that identified the pin out for each of the PALs used on the board, along with the combinatorial logic necessary to recreate the PAL JEDEC files. Would it make sense for me to add a page with this data to the schematics that didn't have it (where available)? I have the formulae for most of the TI produced cards (as well as the data for a couple of third-party cards). 1 Quote Link to comment Share on other sites More sharing options...
RickyDean Posted November 7, 2017 Share Posted November 7, 2017 Also, I have a general question: A lot of the original TI schematics had a first page that identified the pin out for each of the PALs used on the board, along with the combinatorial logic necessary to recreate the PAL JEDEC files. Would it make sense for me to add a page with this data to the schematics that didn't have it (where available)? I have the formulae for most of the TI produced cards (as well as the data for a couple of third-party cards). I believe the more information the better, it would be possible to recreate the logic, if needed. I know it's hard for a PAL to die, but if it does, it would be nice to be able to replace it. Quote Link to comment Share on other sites More sharing options...
HackMac Posted November 8, 2017 Share Posted November 8, 2017 Would it make sense for me to add a page with this data to the schematics that didn't have it (where available)? Yes, of course, it makes definitely sense to add all kind of information that are available. I agree with RickyDean that only complete documentations will help us and it will revaluate your works. I think you don't refurbish the schematics for us so we can make wallpapers form it for our next Man Cave improvement? 2 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted November 10, 2017 Share Posted November 10, 2017 Would you please let me know when these are complete so I can link to them for easier public accessibility/searching. Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted November 10, 2017 Share Posted November 10, 2017 Will do. I have already added the PAL data to the TI DSDD controller set, but I still have to dig out one of my cards to do some trace tracking to solve the last three ambiguities in the diagrams. 1 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted November 10, 2017 Share Posted November 10, 2017 I think you don't refurbish the schematics for us so we can make wallpapers form it for our next Man Cave improvement? Although... 4 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted November 10, 2017 Share Posted November 10, 2017 Well, I *DID* have this displayed on the wall in my den for about 6 months at one point... 3 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted November 11, 2017 Share Posted November 11, 2017 http://www.cafepress.com/tiandgenevestuff.557717212 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted January 12, 2018 Share Posted January 12, 2018 Here's another nice schematic for you--Thierry Nouspikel's IDE controller. This includes all of the fine little nuances like a page with the alternate RTC chips and any changes needed to the board for them. A3-Nouspikel-IDE-HDC-P1.pdf A3-Nouspikel-IDE-HDC-P2.pdf 4 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted February 26, 2018 Share Posted February 26, 2018 anybody have Preditor? I just ordered a copy from mdude so I'll scan it when I get it if not Greg Quote Link to comment Share on other sites More sharing options...
+helocast Posted February 26, 2018 Share Posted February 26, 2018 Is this one worth scanning for The Collection or just noise being third party and all? SAMS Computer Facts, Computer: Texas Instruments TI-99/4A Model PHC004A, April 1984 I picked it up pristine/sealed off of eBay - several 11"x17" photos of component locations with list by value/tolerance, troubleshooting, etcetera. 2 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted February 26, 2018 Share Posted February 26, 2018 Well, I *DID* have this displayed on the wall in my den for about 6 months at one point... https://www.zazzle.com/z/o4l5g?rf=238577160522691353 3 Quote Link to comment Share on other sites More sharing options...
Fritz442 Posted February 26, 2018 Share Posted February 26, 2018 Is this one worth scanning for The Collection or just noise being third party and all? SAMS Computer Facts, Computer: Texas Instruments TI-99/4A Model PHC004A, April 1984 I picked it up pristine/sealed off of eBay - several 11"x17" photos of component locations with list by value/tolerance, troubleshooting, etcetera. YES, I think so!!! 1 Quote Link to comment Share on other sites More sharing options...
+acadiel Posted February 26, 2018 Share Posted February 26, 2018 Is this one worth scanning for The Collection or just noise being third party and all? SAMS Computer Facts, Computer: Texas Instruments TI-99/4A Model PHC004A, April 1984 I picked it up pristine/sealed off of eBay - several 11"x17" photos of component locations with list by value/tolerance, troubleshooting, etcetera. Just check to see if it’s on http://www.hexbus.com/tibooks in case it was already done 1 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted February 27, 2018 Share Posted February 27, 2018 TRIS. TRIS - Asgard Software.pdf 4 Quote Link to comment Share on other sites More sharing options...
Like us on Facebook
Follow us on Twitter
AtariAge on Instagram
Watch us on YouTube
Chat on Discord
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.