Overclocking Picasso IV?

[TjLaZer]

I finally got my Picasso IV and was trying to remember how to overclock it via the tool types.  I set the tool types via the PVS Prefs tool and it still shows 80.5MHz.  It's been about 10 years since I had one and vaigly recall I had to do a work around to actually get it to overclock.  On my CV64 I had no problems.  I am using the Picasso 96 RTG system.  Anyone know how?

Board 0:      PicassoIV
Chip:         Cirrus Logic GD5446
DAC:          Cirrus Logic GD5446 (intern)
RegisterBase: 0x40600000
MemoryBase:   0x41000000
MemorySize:      4161536
BitsPerCannon:         6

This board supports:
        following rgb formats:
                PLANAR
                CHUNKY
                R5G5B5
                R5G5B5PC
                R5G6B5
                R5G6B5PC
                B8G8R8
        hardware sprite,
        software sprite buffer,
        planar and chunky memory exclusive,
        hardware vblank interrupt can be caused,
User selectable flags:
        overclocking enabled,
        memory clock set to 80.5 MHz,
        big sprite used,
        soft sprite in mode depth 4, 8, 15, 16, 24, 32,
        system borderblank used,
        board is part of the display chain,

[keropi]

may I ask why you need to overclock it?  :-?

[TjLaZer]

Runs a little slow at 1024x768 16 bit mode...

[Crumb]

@TjLaZer

Then buy a Voodoo3 or a Permedia2, but don't risk such a precious card :-(