IDE-Fix Express + Apollo 060 acting funny

[Damion]

OK... while I can't replicate your exact problem, it seems I can cause crashing on bootup (device DHx: program failed error) experimenting with different SIMM and clockspeed combinations. One SIMM works fine at a given clock, another won't, but will if the memory frequency is divided.

Try setting the CLK jumper to '040 and see what happens.

>edit< rockape is absolutely on the money, the board probably doesn't like your SIMM



 

[mikolas]

The clk jumper is already at 040 so the memory clock is halved (?). I just disabled the fast ram altogether and still get the same behavior. I think I'll just wait until my BPPC (hopefully) gets fixed and sell the Apollo since I really have no use for two 060 boards anyway. I think I'll get Blizzard 1230 or something similar for my desktop A1200 instead, since it is better for gaming.

[mikolas]

I know this thread is old, but I just can't help reporting the fix to this problem. Pretty simple: reintroduce the timing bugs. I just soldered 22pF caps to the empty pads and now this thing just works. Luckily I had not sold the Apollo yet - now running nice and smooth at 60MHz. :-)

Mikko.

[JimmySage]

I know this is an old thread, but I'm having the same problems.

The symptoms are checksum errors with a read hd, for CF the machine doesn't see any partitions in the early boot menu. However everything works fine if I remove the apollo, or plug in my 030 card. I don't think it's the memory as removing it doesn't help.

Did anybody find a solution to this, and what are these motherboard timing fixes that were mentioned. I've got a revision 1B board.

Many thanks
James