Installed MMULib adjsted mmu-config and it works. Freeze is gone
My only concern is quite poor performance of the graphics itself. I am quite sure that with the stock firmware graphics were significantly more responsive. But this is not the fault of the MMULib.
For reference my current P96Speed bench is this (MMULib installed):
P96Speed 1.2 - ©`97-99 by Jens Langner
.-----------------------------------------.
| Computer......: Amiga 3000/ECS |
| CPU...........: 68030/25 MHz |
| OS / WB.......: V40.68/V40.42 |
| SetPatch......: V43.7 |
| Chip/Fast.....: ~2.0MB/15.5MB |
| Graphics card.: NO GRAPHICS CARD |
| GFX system....: Picasso96 v2.1e |
| Resolution....: 640 x 480 x 8 |
| Depth/Colors..: 256 colors |
| Testlength....: 13 |
+-----------------------------------------+
.============= SPEEDRESULTS ==============.
| RectFill()................ 307 op/s |
| RectFill() Pattern........ 27 op/s |
| WritePixel().............. 10966 op/s |
| WriteChunkyPixels()....... 271 op/s |
| WritePixelArray8()........ 270 op/s |
| WritePixelLine8()......... 1994 op/s |
| DrawEllipse()............. 1187 op/s |
| DrawCircle().............. 1436 op/s |
| Draw().................... 428 op/s |
| Draw() Hor/Ver............ 1123 op/s |
| ScrollRaster() X.......... 6 op/s |
| ScrollRaster() Y.......... 9 op/s |
| PutText()................. 449 op/s |
| BlitBitMap().............. 290 op/s |
| BlitBitMapRastPort()...... 269 op/s |
| BitMapScale()............. 31 op/s |
|--------------- Intuition ---------------|
| OpenWindow().............. 17 op/s |
| MoveWindow().............. 37 op/s |
| SizeWindow().............. 22 op/s |
| CON-Output................ 17 op/s |
| ScreenToFront()........... 43 op/s |
`========================================='