Yes I've an 68030 25 MHz .... I've executed some new tests
Kick 1.3, GVP Install disk (for the boot) and without SCSI HDa) FPU + 68030 + 4 Mb SIMM (jumper settings: J6 open, J5 close,
CN8 2&3 and CN17 2&3 -> are the setting right - to run 68030 at 25MHz - ?) ---> GVPMemTest ok but (after some minutes) GuruMeditation (#00000025.00000000)
b) 68030 + 4 Mb SIMM, without FPU (same above jumper settings) --->
GVPMemTest ok but GuruMeditation! (#00000008.010105F0)
c) 68EC030 + 4 Mb SIMM, without FPU (same above jumper settings: 25MHz) ---> GVPMemTest ok but frozen ...
d) 68EC030 + 4 Mb SIMM, without FPU (jumper settings: J6 close, J5 open,
CN8 1&2 and CN17 1&2&3 - 40 MHz -) ---> GVPMemTest ok but after
some minutes frozen and then GuruMeditation
e) 68EC030 + FPU (without gvp SIMM) 40MHz ---> GVPFpuTest ok but after some minutes the system is rebooted ...
Finally if I run my system without the GVP Combo, all seems works fine !
Some questions:
If I want use Combo without FPU, must open (all pin free) CN16 ?
J13 must be open or close (close = 4 Mb SIMM, open = 1 Mb SIMM) ?
It's difficult for me understand (looking the Combo), which are the right CN pin number (for example CN16 has 3 pin, but which is the pin number 1 ?);
there are photos showing the CN's pin numeration ?
I am really hopeless :confused::confused::confused: ...
regards
Leonard