microprocessors

[vignesh.baskar]

can i interface standard keyboard with 8085?

 

[blueroomelectronics]

Yes a PS/2 keyboard is possible, not a USB keyboard.

 

[vignesh.baskar]

i have a microprocessor kit.. what else i need to do this interfacing

 

[blueroomelectronics]

Not much the PS/2 keyboard is well documented just Google it.
You'll need programming skills mostly. I haven't used the ancient 8085 decades.

 

[Papabravo]

Yes a PS/2 keyboard is possible, not a USB keyboard.

I'll bet large sums that I can make an 8085 talk to a USB keyboard, but I'm pretty sure nobody wants to actually do that any more.

 

[blueroomelectronics]

Then you have some skillz. The USB host stack is not trivial and the ancient 8085 is pretty slow.

 

[kchriste]

You'll need some kind of IO port. I would guess that the 8085 microprocessor kit has one built in that you can use.
The irony of it all is that the keyboard probably has a more powerful microcontroller than the equivalent 8085 microprocessor kit.

 

[blueroomelectronics]

My old clicky key IBM keyboard had an 8048 in it!

 

[Papabravo]

Then you have some skillz. The USB host stack is not trivial and the ancient 8085 is pretty slow.

Possibly, but I really haven't said how I was going to do it and therein lies the real skill.

 

[blueroomelectronics]

Well without using other ICs aside from the 8085 would be a real skill indeed.

 

[Papabravo]

Well without using other ICs aside from the 8085 would be a real skill indeed.

Yes, I agree with that position. The problem was to interface, and I didn't see anything that said I could not use a host controller chip to do the job. You'd still have to come up with the USB host stack in 8085 assembler or maybe PLM(ughhh...) Still a challenge but not impossible. If it was a Z-80 I could probably dig up Leor Zolmans BDS-C compiler and have some chance of porting an existing USB Stack.