8051
http://developer.intel.com/design/mcs51/docs_mcs51.htm
http://www.cygnal.com/ (8051 bis 64k Flash, 12 bit A/D, I2C, SPI, UART, Timer, Eval-Board $99)
http://john.ccac.rwth-aachen.de:8000/as/ ftp://ftp.uni-stuttgart.de/pub/systems/msdos/programming/as (Alfred Arnold AS)
http://www.lancos.com/ (PonyProg: RES-D7 MOSI-D5 SCK-D4 MISO-ACK, Probleme bei GHz-Pentiums)
http://www.geocities.com/dinceraydin/8051/ (Silicon Studio AT89C2051/4051 BlowIt)
http://www.pjrc.com/tech/8051/contrib/prog2051.zip (Paul Hoepping's Prog2051)
http://www.lug-kiel.de/links/details/f_8051.html (2051 EasyDownloader chicken&egg)
http://www.8052.com/
http://www.c51.de/
http://www.stud.fh-hannover.de/~kuhs/537/
http://www.engelmann-schrader.de/system51.html
ftp://rtfm.mit.edu/pub/usenet/comp.answers/microcontroller-faq/8051 (FAQ)
http://www.batronix.de/ (AT89Cx051 Prommer)
http://www.freenet.de/buss (AT89S8252, beachtet Errata, kompatibel zu AEC-Electronics aec_isp Kabel, geht aber angeblich nicht)
http://www.atmel.com/atmel/acrobat/doc1486.pdf (89S ISP errata)
http://plit.de/asem-51/final13.htm
http://www.modul-bus.de/ (Assembler IDE Demo 2k)
http://www.vaultbbs.com/pinnacle/ (2k Demo)
http://www.fsync.com/ (4k Demo)
http://www.geocities.com/microcontrollers/ (Programmer, Robots)
http://www.fsinc.com/devtools/default.htm (IDE Demo 4k free)
http://mazsola.iit.uni-miskolc.hu/~drdani/embedded/s51/ (Simulator)
http://icat.snu.ac.kr/~hitex/tools/rigel/home.htm
http://sdcc.sourceforge.net/ (C-Compiler)
http://www.semiconductors.philips.com/acrobat/applicationnotes/AN457.pdf (ext RAM)
http://www.semiconductors.philips.com/acrobat/8098.pdf (AN417 dyn RAM)
http://home.t-online.de/home/B.Kainka/basic.htm (BASIC für 51, 535, 537, auch Compiler)
http://www.PROuC.de/ (89S8252 programmer)