Links to other Atari 8-bit resources which may be of interest:

AtariAge Atari 8-bit Computers Forum

Hiassoft (TurboFreezer, High Speed SIO driver)

The Montezuma (SIO2BT, RespeQt)

Peter Dell (Jac!: WUDSN IDE for Eclipse)

MADS Assembler home page

The Altirra Atari 8-bit Emulator by Avery Lee

SpartaDOS X Upgrade Project

ataritoday.net

AtariBits (home of the 1088XEL)

The Brewing Academy (1088XEL vendor)

The SymbOS Z80 Multitasking OS

Wilson Mines Co. (large collection of 6502-related information)

Jerzy Sobola (huge collection of Atari schematics)

AtariDude’s website (various Atari 8-bit articles)