Post by thread:Mouse and keyboard controller chip?

Hi all, I am working on a project where my client wants a PIC driven device to talk to another piece of hardware as if it were a PS2 mouse or keyboard. I assume that I can have the PIC easily bit-bang the interface on its end, but I do not know what to do on the other. I am told that in the old days an 8042 was used to implement this function and today it is most often integrated in chip-sets, etc.. Does anyone have a suggestion for idealy a single chip to sit on an 8 or 16-bit bus to implement the PS2 interface? I would prefer a controller chip over a micro with more software required. Thanks. Mark A. Corio Rochester MicroSystems, Inc. 200 Buell Road, Suite 9 Rochester, NY 14624 Tel: 716-328-5850 Fax: 716-328-1144 http://www.frontiernet.net/~rmi/ ****** Designing Electronics for Research and Industry ******

On Mon, 6 Jul 1998, Mark A. Corio wrote: > Hi all, > I am working on a project where my client wants a PIC driven device to talk to > another piece of hardware as if it were a PS2 mouse or keyboard. I assume that > I can have the PIC easily bit-bang the interface on its end, but I do not know > what to do on the other. I am told that in the old days an 8042 was used to > implement this function and today it is most often integrated in chip-sets, > etc.. Does anyone have a suggestion for idealy a single chip to sit on an 8 or > 16-bit bus to implement the PS2 interface? I would prefer a controller chip > over a micro with more software required. Thanks. > > Mark A. Corio > Rochester MicroSystems, Inc. > 200 Buell Road, Suite 9 > Rochester, NY 14624 > Tel: 716-328-5850 > Fax: 716-328-1144 > http://www.frontiernet.net/~rmi/ > ****** Designing Electronics for Research and Industry ****** This sounds like a job for a small-to-medium FPGA to me. If you manage to implement your bit-banging as a state machine or ladder logic using the remaining cells, then you have a 1-chip solution (plus EEPROM or PIC508/509 or whatnot to supply the boot bit-stream if you do not take the EE version of the FPGA). hope this helps, Peter