Before to send the first Ribbon Switchers, I have finished to repair my A600HD and I have made some tests with the Switcher.
First of all, the mini clip used to pick up the Reset signal is to big to be usable onto this version of Amiga. All ICs are smd components.
These clips are sold as smd compatible.
Nevertheless, there is a solution. Onto the A600, the 68000 is a smd IC and the Reset signal is not onto the same pin as the DIL version.
Pin 20 for the A600 and 18 onto A500 & A2000.
Under the 68000, on the bottom layer, there is a vias which is connected to the pin 20.
The solution is to solder a little wire into this vias and to connect the clip at the other end of the wire.
Pictures below:
While the KS1.3 to KS3.1 are runing perfectly onto A500 & A2000 with the Kickstart Switcher, I haven't managed to run KS1.3.
Only KS2 to KS3.1 are runing fine. No HD into the A600. KS1.3 is an original Commodore ROM.
It's strange, or perhaps not so much. After a control onto A600 & A500 schematics (from amigawiki.de), the only difference is for /OE & /CS signals.
For A500, /OE corresponds to /ROMEN and /CS is to GND.
For A600, /OE corresponds to /OE and /CS to ROMEN...
Need to make some controls & to make a mod to see if the problem can be resolved.
Please, if you want the Switcher to use into an A600, keep in mind that it's actually usable with KS from 2.X to 3.1.
