TInaut Posted January 30, 2016 Share Posted January 30, 2016 OK thanks, so that would also explain that I still could read another 5,25" TI disk written on another 40 track drive/system. To clarify, the 80-track upgrades allow drive(s) up to 80 tracks per side via the DSR. If you put a 40-track drive at an 80-track position, but alway treat it as 40-track, it will work fine. I.e., as long as you put a 40-track disk written in a 40-track drive attached to an 80-track position, it will work. If you put a 40-track drive at an 80-track position, as long as you always format at 40 tracks or less, it should work. If you format a 40-track drive drive to 80-track, the 40th track (track 39, count starts at 0) gets overwritten 40 times with tracks 40 through 79. What you are left with is a disk with tracks 0 to 38 and 79. The 80-track upgrades to the TI controller behave differently to the 80-track Myarc controllers. The TI upgrades do not double step. The Myarc 80-track options double step to allow reading of 40-track disks in 80-track drives. 2 Quote Link to comment Share on other sites More sharing options...
vectrexroli Posted January 30, 2016 Share Posted January 30, 2016 To clarify, the 80-track upgrades allow drive(s) up to 80 tracks per side via the DSR. If you put a 40-track drive at an 80-track position, but alway treat it as 40-track, it will work fine. I.e., as long as you put a 40-track disk written in a 40-track drive attached to an 80-track position, it will work. If you put a 40-track drive at an 80-track position, as long as you always format at 40 tracks or less, it should work. If you format a 40-track drive drive to 80-track, the 40th track (track 39, count starts at 0) gets overwritten 40 times with tracks 40 through 79. What you are left with is a disk with tracks 0 to 38 and 79. The 80-track upgrades to the TI controller behave differently to the 80-track Myarc controllers. The TI upgrades do not double step. The Myarc 80-track options double step to allow reading of 40-track disks in 80-track drives. Thanks, that´s what I thought, so if I understood it correctly the best option would always be to order the upgrade ROM configuration for 80, 80, 80 track for all 3 drives then, if you still could use also your old drive. Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted January 30, 2016 Author Share Posted January 30, 2016 ..., if you still could use also your old drive. IF, the magic word there. Do you also have an HDX? If so use DSK2PC to easily make DSK images of all your current 40 track disks. This will CYA if anything goes wonkers on you. If needed you'll be able to use Ti99Dir to copy the stuff over to your new 80 track DSK images. Quote Link to comment Share on other sites More sharing options...
+Schmitzi Posted January 30, 2016 Share Posted January 30, 2016 I never want to miss my 40-80-80 with DSK1:origin-40-drive (TI-Ctrl) Very interesting to hear about the DDCC-1´s doublestepping, now I understand why the TI-Ctrl has the "problems"... xXx Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted January 30, 2016 Author Share Posted January 30, 2016 I never want to miss my 40-80-80 with DSK1:origin-40-drive (TI-Ctrl) Very interesting to hear about the DDCC-1´s doublestepping, now I understand why the TI-Ctrl has the "problems"... xXx The DDCC-1 clone is my new 'Holy Grail'. When that baby comes out I'm gonna be ecstatic. That will give a guy the potential of 2.88 megabytes accessible AT ONE TIME. Considering the size of the average TI program and even factoring in for possible, although improbable enhancements that seems like enough to me. 1 Quote Link to comment Share on other sites More sharing options...
+mizapf Posted January 30, 2016 Share Posted January 30, 2016 As I said, single density is 125 kbit/s, double density is 250 kbit/s, and it shows. Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted January 31, 2016 Author Share Posted January 31, 2016 Roli, In case you don't have an HDX, you might want to watch this video to see how easy it'll be for you to backup all your physical diskettes to the PC. https://www.youtube.com/watch?v=p8FdU0nzExA&feature=youtu.be 1 Quote Link to comment Share on other sites More sharing options...
vectrexroli Posted January 31, 2016 Share Posted January 31, 2016 Thanks, HDX might be the next step, but first I want to get the disk drives running and I got everything so far, only waiting for those damn Molex power cables. Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted July 15, 2016 Share Posted July 15, 2016 trying to do this now and getting a solid light when booting up.. doublechecking my socket soldering.. Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted July 15, 2016 Author Share Posted July 15, 2016 trying to do this now and getting a solid light when booting up.. doublechecking my socket soldering.. I know how that can happen, trust me, I've done it a few times myself over the years. The same thing (solid light) also happens with a weak battery or corrupted DSR. Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted July 17, 2016 Share Posted July 17, 2016 trying to do this now and getting a solid light when booting up.. doublechecking my socket soldering.. sockets seem to be good, no weird shorts.. Quote Link to comment Share on other sites More sharing options...
Arnuphis Posted July 18, 2016 Share Posted July 18, 2016 Got my HXC mounted in the PEB along with a TEAC 3.5" floppy. . As soon as I get my TI card back from it's upgrade I will be giving it a go. Currently putting some hfe files on a 2GB SD card. 1 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted July 18, 2016 Author Share Posted July 18, 2016 Got my HXC mounted in the PEB along with a TEAC 3.5" floppy. . As soon as I get my TI card back from it's upgrade I will be giving it a go. Currently putting some hfe files on a 2GB SD card. I only have one word for you Arnuphis... PHOTO! Quote Link to comment Share on other sites More sharing options...
Arnuphis Posted July 18, 2016 Share Posted July 18, 2016 I only have one word for you Arnuphis... PHOTO! Once the controller card is back in then for sure Quote Link to comment Share on other sites More sharing options...
Asmusr Posted September 23, 2016 Share Posted September 23, 2016 Is it possible to use 2732 eproms instead of 2532 eproms with the 80 track mod? Quote Link to comment Share on other sites More sharing options...
Shift838 Posted September 23, 2016 Share Posted September 23, 2016 (edited) someone can correct me if I am wrong, but I think no as they are not interchangeable. If I recall correctly when I thought of the same issue because my programmer had issues with 2532 eproms i found that various pins are different according to the datasheet between the two eproms. I am sure you could use them but you would have to bend the pins out and connect them to the correct lines on the PCB. Now remember. This is if my memory is serving me correctly. I ended up ordering a set from ArcadeShopper so I could just drop them in. Edited September 23, 2016 by Shift838 Quote Link to comment Share on other sites More sharing options...
Asmusr Posted September 23, 2016 Share Posted September 23, 2016 someone can correct me if I am wrong, but I think no as they are not interchangeable. If I recall correctly when I thought of the same issue because my programmer had issues with 2532 eproms i found that pins 18 and 21 appear to be reversed in the datasheet between the two eproms. I am sure you could use them but you would have to bend the pins out and connect them to the correct lines on the PCB. Now remember. This is if my memory is serving me correctly. I ended up ordering a set from ArcadeShopper so I could just drop them in. Thanks, that explains why it's not working. So pin 18 and 21 should be exchanged? It's worth trying now that I have the chips. Otherwise I will also have to order some 2532s from arcadeshopper since my programmer doesn't seem to be able to program them. 1 Quote Link to comment Share on other sites More sharing options...
Shift838 Posted September 23, 2016 Share Posted September 23, 2016 Thanks, that explains why it's not working. So pin 18 and 21 should be exchanged? It's worth trying now that I have the chips. Otherwise I will also have to order some 2532s from arcadeshopper since my programmer doesn't seem to be able to program them. which programmer do you have? Some EPROM programmers required an external power source to program certain chips. I know my GQ-4X does for 2532's! Quote Link to comment Share on other sites More sharing options...
Shift838 Posted September 23, 2016 Share Posted September 23, 2016 also check the datasheets to make sure you have the correct pins. i may have been more than just those 2. Quote Link to comment Share on other sites More sharing options...
Asmusr Posted September 23, 2016 Share Posted September 23, 2016 also check the datasheets to make sure you have the correct pins. i may have been more than just those 2. Yes it looks like 3 pins (18, 20, 21) are different. 1 Quote Link to comment Share on other sites More sharing options...
Shift838 Posted September 23, 2016 Share Posted September 23, 2016 Yes it looks like 3 pins (18, 20, 21) are different. I believe VPP is only used to program the chip and is no longer needed after that. so i think bend 18 and 21 out and then jumper from 18 to 21 on both chips. Quote Link to comment Share on other sites More sharing options...
Shift838 Posted September 23, 2016 Share Posted September 23, 2016 Yes it looks like 3 pins (18, 20, 21) are different. I searched and found the link to the article that I found when I was looking some months back. HERE Quote Link to comment Share on other sites More sharing options...
Asmusr Posted September 23, 2016 Share Posted September 23, 2016 which programmer do you have? Some EPROM programmers required an external power source to program certain chips. I know my GQ-4X does for 2532's! I have the Minipro TL866. Quote Link to comment Share on other sites More sharing options...
Asmusr Posted September 23, 2016 Share Posted September 23, 2016 I tried rewiring 2732 the eproms but it didn't work. The voltage regulator in the lower right corner is getting very hot, is that normal? Quote Link to comment Share on other sites More sharing options...
Shift838 Posted September 23, 2016 Share Posted September 23, 2016 it's going to get hot, but if it did not work then order a pair of 2532's from arcade shopper. Quote Link to comment Share on other sites More sharing options...
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