Madhatter1 #1 Posted February 11 This is similar to a CF7, but use SD card and has nothing to do with CF7. It allows a TI-99/4a to use disk image volumes on SD card as floppies. I started this a couple years ago and have decided to share it in case someone else wants to build one. https://github.com/dennishatton/TI-99-4a_SD_Disk_Project 12 3 Quote Share this post Link to post Share on other sites
Shift838 #2 Posted February 11 nice. i may have to order a few PCBs from my supplier during my next round. if anyone want's to get on board with a PCB shoot me an email. Quote Share this post Link to post Share on other sites
AtariNostalgia #3 Posted February 11 What's the estimated price on these? Quote Share this post Link to post Share on other sites
Shift838 #4 Posted February 11 3 hours ago, Madhatter1 said: This is similar to a CF7, but use SD card and has nothing to do with CF7. It allows a TI-99/4a to use disk image volumes on SD card as floppies. I started this a couple years ago and have decided to share it in case someone else wants to build one. https://github.com/dennishatton/TI-99-4a_SD_Disk_Project Very cool project. I checked out the Kicad project and there does not seem to be a created PCB file (just a blank one). Did you ever get one tooled or have gerbers for the is project already? Quote Share this post Link to post Share on other sites
Madhatter1 #5 Posted February 11 1 hour ago, Shift838 said: Very cool project. I checked out the Kicad project and there does not seem to be a created PCB file (just a blank one). Did you ever get one tooled or have gerbers for the is project already? There is no PCB and I don't intend to make one. I built this using wire wrap for myself. I never know when I will make a change. If someone wants a PCB, They can use KICAD to make one. I wished I would have used Eagle, Because Eagle is now part of Fusion 360. In which case I could have milled a PCB on my CNC. This ATMEGA162 emulates the disk controller and interfaces to the TI DSR rom. 1 Quote Share this post Link to post Share on other sites
fabrice montupet #6 Posted February 11 I like your project and I think that I will make make one , thank you 🙂 3 Quote Share this post Link to post Share on other sites
Shift838 #7 Posted February 11 53 minutes ago, fabrice montupet said: I like your project and I think that I will make make one , thank you 🙂 i think i will use the schematic to port it over to eagle then. 1 Quote Share this post Link to post Share on other sites
RickyDean #8 Posted February 12 I've got two Bunyan and two Fetzer protoboards. I may take one and do this and the Nouspikel USB, both of them, on it, for the peb box. 1 Quote Share this post Link to post Share on other sites
+FarmerPotato #9 Posted February 14 On 2/11/2021 at 4:05 PM, Madhatter1 said: There is no PCB and I don't intend to make one. I built this using wire wrap for myself. I never know when I will make a change. If someone wants a PCB, They can use KICAD to make one. I wished I would have used Eagle, Because Eagle is now part of Fusion 360. In which case I could have milled a PCB on my CNC. This ATMEGA162 emulates the disk controller and interfaces to the TI DSR rom. Nice! I use wire wrap too So this acts like a drive attached to the TI controller? Or do you mean it has its own DSR ROM replaces the need for a controller? 1 Quote Share this post Link to post Share on other sites
Madhatter1 #10 Posted February 14 15 hours ago, FarmerPotato said: Nice! I use wire wrap too So this acts like a drive attached to the TI controller? Or do you mean it has its own DSR ROM replaces the need for a controller? It uses the TI DSR rom. I wanted it that way so it would be total compatible. 1 Quote Share this post Link to post Share on other sites
Madhatter1 #11 Posted February 15 8 hours ago, Madhatter1 said: I miss read your question. It is complete, you do not need a TI disk controller. 1 Quote Share this post Link to post Share on other sites