efton.sk http://www.efton.sk en-us Basic52/RD2 http://www.efton.sk/basic Basic interpreter for (A)T89C51RD2 Fast 51 comparison http://www.efton.sk/51comp/51comp.htm Comparison table of fast '51 clones. TEA and XTEA implementation on '51 http://www.efton.sk/t0t1/index.htm Implementation of tiny encryption algorithms (with inverse) in 8051 assembler. 8051 cheatsheet and other tidbits http://www.efton.sk/t0t1/8051cs.pdf 8051 Cheatsheet - a table with 8051 instructions with length, execution time, description etc.; in a form to be printed to a single sheet of paper. Other tidbits also in http://www.efton.sk/t0t1/index.htm, e.g. 8051 instruction set in a matrix form. Corner of the curious http://www.efton.sk/curious Various devices, from inside. I was curious, how they work... :-) SEA - Scalable Encryption Algorithm - implementation for x51 and AVR http://www.efton.sk/crypt/sea.htm Implementation of SEA block cipher for x51 and AVR, with description. The unofficial history of 8051 http://www.efton.sk/t0t1/history8051.pdf The unofficial history of 8051. Corrected error in the 8051 opcode matrix document http://www.efton.sk/t0t1/8051op.pdf An error corrected in the opcode matrix (djnz direct,rel). The new version can be distinguished - it has a different copyright year. New version of BASIC52 available http://www.efton.sk/basic/index.htm New version of BASIC52 for 89C51RD2 available for download. Fast implementation of CCITT CRC-16 for 8051 http://www.efton.sk/t0t1/index.htm#CRC-16 Highly speed optimized implementation of CCITT CRC-16 for 8051 available for download. XTEA for SDCC http://www.efton.sk/crypt/index.htm#XTEA for SDCC XTEA block cipher for SDCC. Example of usage given. Description for using it as a pseudorandom number generator (pRNG) given. nyweb http://www.efton.sk/nyweb/index.htm nyweb is just another literate programming tool, based on ideas of Knuth's WEB, and heavily inspired by nuweb. Skein and ThreeFish for '51 and AVR http://www.efton.sk/crypt/skein.htm SHA-3 competitor Skein/ThreeFish, speed-optimised assembly language implementations, on 8051/8052 and AVR.