Firmware request : MESA 7I76EU + 7I85 + PWM & IOport

More
5 months 4 weeks ago #346110 by PCW
Firmware for a 7I76EU with a 7I85 on P2 and 2 PWMgens on P3

Note that since P3 pins are unbuffered/unprotected it's best to add
a say 100 to 220 Ohm series resistor to pins connected to the rest of the system
(or use a cheap parallel port breakout card)

 

File Attachment:

File Name: 7i76eu_7i7...wm2d.zip
File Size:298.56 KB

 

Please Log in or Create an account to join the conversation.

More
5 months 4 weeks ago #346143 by dedlefou
Yes I'll take care to put a BOB betwen P3 and the hardware until I grab a specific card from mesa store ;)

Thanks a lot, have a good day

Please Log in or Create an account to join the conversation.

More
5 months 4 weeks ago #346144 by PCW
You can also just add ~220 ohm series resistors in the PWM lines

The main hazard is ground differences/HF noise causing negative
input voltages with unlimited current. a series resistor will protect against
this.

Please Log in or Create an account to join the conversation.

Moderators: PCW, jmelson
Time to create page: 0.234 seconds
Powered by Kunena Forum