Changes
Added 464 to 6128 compatibility modification
[[File:6128 PreAsic PCB.png]]
= Enabling 6128 mode on 464 =
Enabling the 6128 mode has two main advantages :
* Being fully compatible with 6128 memory modes, mainly C3 mode when upper ROM is enabled.
* On board memory can be increased to 128kb.
The compatibility modification, which is reversible, is achieved by soldering two wires:
* one connecting IC101 pin 97 (L6N4) to ground, which configure the asic to work as a 6128
* one connecting expansion port pin 48 (EXT/) to ground, preventing the asic to map the missing AMSDOS ROM in place of BASIC one.
The modifications are visible on the picture below
[[File:Enable6128modeOn464PreAsic.jpg]]
