http://www.8051projects.net/ Learn to make simple 8051 projects, pic projects, avr projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2008-09-06T14:22:52-07:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/downloads200.html 2008-09-06T14:22:52-07:00 Don Carveth AVR libraries PS1 Keyboard Interface Don Carveth July 2002PS-2 (PC-AT) style keyboard interface.Mirrors all characters typed on PC-AT keyboard on terminal connected to UART.Based on Atmel App Note AVR-313Converted supplied c code to GCC 3.2Based on ATMEGA163 at 8 MHz*********** REVISION HISTORY **************************Rev 0 Creation 8/30/02 Converted from IAR to GCC Operational.*********** OPERATION *********************************Connect PS-2 keyboard as shown below - see App note for connection infoConnect UART to terminal program at 19200 baud, 8N1 All standard keys pressed will mirror on terminal. Shift works, and have no effect.Hit to alternate between character mode and hex code representation.Connect an LED to PD5 to ensure the program is running.Use the test pin at PB1 to monitor progress. Insert test_pin() commands in the program to toggle the pin - watch on your scope. Only need for debugging. To change processor or crystal make changes in StdDefs.h.Select between polled and interrupt driven UART transmit (putchar) in StdDefs.h *********** RESOURCES *********************************Processor: ATMega163Crystal: 4 MHzFlash size: 0x7e6 (2022)RAM Used: 0x9c (156)EEPROM Used: 0Pins used:PA0PA1PA2PA3PA4PA5PA6PA7 PB0 PB1 PB2 PB3 PB4 PB5 MOSI - ISP, PB6 MISO - ISP,PB7 SCK - ISPPC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 PD0 UART RcvPD1 UART TxdPD2 INT0 - ClockPD3 INT1 - DataPD4 PD5 Run LEDPD6 PD7 Interrupts:INT0 - PS-1 Keyboard clockTimers: http://www.8051projects.net/downloads9.html 2008-09-06T14:22:52-07:00 AVR libraries Uart driver for all AVR.