@Drakon, post #1
@juen, post #2
42.56MHz overdrive mode
This mode will only work with ACA1221 revision 1.3 or higher. The ACAcontrol tool will output the version number if called without any arguments. Further, the new logic revision can also be seen on the serial number displayed in the autoconfig structure: V1.3 cards have serial number 2, while previous cards have serial number 1.
Only very few CPUs really work at 42MHz. Check the CPU mask before trying the hack or even buying the CPLD update: The CPU mask revision can be read in the second line, right under the CPU type number. Only mask revisions E30G and C54S are known to work at 42MHz. Mask revision C10H will only work up to 28MHz, and mask revision B47K will only work up to 21MHz.
To activate 42MHz mode, both jumpers must be closed at the same time. This seems physically impossible, because they share the middle pin. You must therefore create a jumper that connects all three pins, or connect them by other means, where soldering is not recommended. Please note that connecting all 3 pins together will also enable "trial mode", so trials will be counted on every startup. However, the card will appear as if the "unprotect" jumper is not set, so licensing operations are not possible.
To enter 42MHz operation, 63MBytes must be licensed and MapROM must be activated. In this state, the 28MHz setting is converted to 42MHz.
@mwb113, post #14
A przepraszam nie doczytałem zobacz może Smart File system
@Drakon, post #16
@Jield, post #18