acme Posted January 9, 2021 Share Posted January 9, 2021 (edited) 11 hours ago, F.G. Kaal said: I don't have this version of CF7A+ so I can't know if it will work with Ti99Hdx server. The previous version had a spare CRU bit I could use in Cf2k to turn the bus arround (Read or Write) I really don't know if that (same) CRU bit is still availalable in this version. There are different components used so I really can't tell if this newer version is working the same as the older versions. You also need a real parallel port on your PC/Laptop. It doesn't work with a USB-Parallel converter. If you don't have a real parallel port then you could try the Arduino Parallel to serial converter mentioned on my website here http://www.ti99-geek.nl/Projects/ti99hdx/ti99hdx_cf7a+.html Fred Hallo Fred, thanks for the reply. I got a response from Custodio Malilong. He said, he's going to check the connection with the newer CF7+ version. Let's wait and see - I'll report back. EDIT: I do have an old parallel port ? - I know, PIO bit-banging with USB isn't possible. Edited January 9, 2021 by acme Quote Link to comment Share on other sites More sharing options...
acme Posted January 29, 2021 Share Posted January 29, 2021 Update: I've got my CF7+ (SMD-Version; see my prior posts) working. 1) Take 5V from the LED power. See yellow circle in second picture. 2) desolder Pin11 (PC-side) from DB25 and connect it to the 5V LED power. See red circle in first picture. Reason: Pin11 (PC-side) is triggered by CRU >1306 in the newer CF7+ versions and it conflicts with CRU >1300 (ROM/LED on) if connected. This is the reason, why the old way of patching isn't working any longer. Testing: For testing I wrote a little Linux program in C as listener on my /dev/parport0 and on the TI-side I printed a small basic file: >LIST "PIO" and it's working. Didn't perform other tests though. Maybe some smart guys here can figure out, how to handle this more professionally. Note: I also wrote a simple basic program (RXB2005) to trigger the PIO CRUs manually without the patch above by using CRU >1306 as the ACK signal. And the communication was working also. So in theory all signals are available on the CF7+, but to make it work, would mean to patch all existing programs Quote Link to comment Share on other sites More sharing options...
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