It isn't in the board designs we have been using all this time though.. It just has r5 and no location for r6.. none of the bazillions i've built has a R6
You're right Greg,
It is only mentioned in the schematic and bill of materials and step 30 only mentions the switch.
SW1 and R6 are optional and R6 must be added on the RS232 card itself.
You only need these if for some reason you need the interrupts of RS232/1 and using some
program that enables the interrupts like Telco.
I can live without the interrupts for years now ... I have never used Telco again after HDX worked
flawless . I only added SW1 and R6 on my second RS232 card for my Geneve system and I see
now that is not the one in the photo on my website ... oh well ... better add a second photo some day.
Edited by F.G. Kaal, Mon Jul 17, 2017 10:40 AM.