[CSDb] - User Forums - Shift/Shift-Lock

You are not logged in - nap

CSDb User Forums

Forums > C64 Coding > Shift/Shift-Lock

2005-08-27 09:18

Rost

Registered: Oct 2004
Posts: 22

Shift/Shift-Lock

Hi,

does someone know how it works to speperate between the shift and shift-lock key?

e.g.
D.Y.S.P.I.D.C.E.

maybe no emulator can handle this :-)

Rost

2005-08-27 09:59

JackAsser

Registered: Jun 2002
Posts: 2038

It's all in C= hacking - Issue 7

"You can use this feature to distinquish between the left shift and the shift lock keys, although they are connected to same hardware lines. The shift lock key has smaller resistance than the left shift. If you make both CIA 1 ports to outputs (write $FF to $DC03 and $DC01) prior reading the left shift key, only shift lock can change the values you read from CIA 1 port B ($DC01).) "

http://services.canberra.edu.au/~scott/C%3DHacking/C-Hacking7.h..

Have fun!

Refresh

Subscribe to this thread: