Useful Links

68HC11, 68HC12, 68HCS12 using GNU compiler - for discussions and questions about using the GNU compiler for this 16 bit processor family
68HC12 processor Yahoo group with discussions and question about the 16 bit Freescale processors
Freescale's own 16 bit MCU forum
Freescale's own Coldfire forum
Freescale's own Kinetis forum
TowerGeeks Freescale's Tower System hosted by Digi-Key
Freescale's own Codewarrior development tools forum
NXP LPC2000 processors - extremely active Yahoo group with active participation from NXP experts
NXP's own forum - all NXP processors but of course also the LPC23XX range too
Spark Fun Electronics - containing an interesting board dedicated to ARM and LPC
Atmel AT91SAM7 family - Yahoo group with discussions and questions about the AT91SAM ARM7 processors
ATMEL's own AT91SAM7 forum - with discussions and questions about their ARM7 processors
ST Microelectronics forums - with discussions and questions about the STM32, STR91XF families and more..
Raisonance ARM Forum - with discussions and questions about the STR91XF family
Luminary Micro's Forums - with discussions and questions about the Stellaris family and ARM Cortex M3 [now a part of Texas Instruments]
AVR Freaks - with discussions and questions about AVR32
EDABOARD - Forum for Electronics, Projects, Power, Schematics, Circuits, Books, Microcontrollers, ASIC, DSP, RTOS, RF, Digital and Analog Design, Circuits, Service Manuals

Freescale^TM KINETIS - 32 bit ARM Cortex M4 with up to 128k SRAM and up to 512k FLASH, integrated 10/100M Ethernet controller and USB-OTG
Freescale^TM M5225X Kirin3 - 32 bit ColdFire with up to 64k SRAM and up to 512k FLASH, integrated 10/100M Ethernet controller and USB-OTG
Freescale^TM M5223X - 32 bit ColdFire with 32k SRAM and up to 256k FLASH, integrated 10/100M Ethernet controller and PHY
Freescale^TM M5222X - 32 bit ColdFire with 16/32k SRAM and 128k/256k FLASH, integrated USB OTG
Freescale^TM M5221X - 32 bit ColdFire with 8/16k SRAM and 64K/128k FLASH, integrated USB OTG
Freescale^TM M521XX - 32 bit ColdFire with 16k SRAM and 64K/128k FLASH
Freescale^TM M521X - 32 bit ColdFire with 16k/32k SRAM and 128K/256k FLASH with CAN
Freescale^TM MC9S12NE64 - 16 bit HC12 single chip with 8k SRAM and 64k FLASH, integrated 10/100M Ethernet controller and PHY
ATMEL^TM AT91SAM7X - 32 bit ARM7 with up to 128k SRAM and up to 512k FLASH, integrated 10/100M Ethernet controller (external PHY) and USB device
Luminary Micro^TM LM3SXXXX^*** - 32 bit Cortex ^TM M3 with up to 64k SRAM and up to 256k FLASH, integrated 10/100M Ethernet controller and PHY with auto cross-over
NXP^TM LPC23XX^** - 32 bit ARM7 with up to 58k SRAM and up to 512k FLASH, integrated 10/100M Ethernet controller (external PHY)
ST^TM STR91XF^* -32 bit ARM9 with up to 96k SRAM and up to 544k FLASH, integrated 10/100M Ethernet controller (external PHY)