Mistake in demo board schematic
Dennis Ferron
Posts: 480
There seems to be a mistake in the demo board schematic. The "clock" and "data" connections to the Propeller are swapped for both the keyboard and the mouse PS/2 ports. I learned this because I'm basically duplicating the demo board for my PropStick computer, and I couldn't get the mouse and keyboard demo programs to work until I switched these connections.
The way the schematic shows it:
P24 <--> Mouse Data
P25 <--> Mouse Clock
P26 <--> Keyboard Data
P27 <--> Keyboard Clock
The correct way they should be hooked up (the way they must have been physically connected in the demo board) is:
P24 <--> Mouse Clock
P25 <--> Mouse Data
P26 <--> Keyboard Clock
P27 <--> Keyboard Data
Could someone with a demo board verify this for me?
The way the schematic shows it:
P24 <--> Mouse Data
P25 <--> Mouse Clock
P26 <--> Keyboard Data
P27 <--> Keyboard Clock
The correct way they should be hooked up (the way they must have been physically connected in the demo board) is:
P24 <--> Mouse Clock
P25 <--> Mouse Data
P26 <--> Keyboard Clock
P27 <--> Keyboard Data
Could someone with a demo board verify this for me?
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Chip Gracey
Parallax, Inc.