Description

Freddie replacement module for XL/XE

Hardware, manuals, FAQ, and other info on manufacturers website – HERE

FREDDIE REPLACEMENT  –  64k SRAM Module is a requirement!!!

• Creates OSC clock (3,5X MHz) for GTIA  (CLK_IN /4)
• PAL/NTSC independent
• Generates inverted CLK_O for some motherboard revisions
• CAS_IN for SRAM MODULE CONNECTOR ONLY

STEP BY STEP:

• install SRAM 64Kb replacement for Atari XL/XE
• Swap FREDDIE CHIP with replacement
• Connect 1 wire:    LSP1  ==>  CI of  SRAM MODULE
• After power_on, clk_led shall be constant on – it means we have a nice square clock signal 🙂

NOTE:

VBXE upgrade owners do NOT NEED FREDDIE REPLACEMENT