Unitcontrol Cyberstormppc

[patrik]

@amiga4001:

I also have this issue, but I solved it by setting the speed of the drive with UnitControl right after SetPatch in the Startup-Sequence like this:

Code: [Select]


UnitControl Device=cybppc.device Unit=0 Period=20 Offset=8 Wide Reselection FWC


This sets unit 0 (my only drive) to:
- 20MHz synchronous (40MB/Sec if combined with Wide)
- Wide (16-bit)
- 8Byte handshakes
- Reselection enabled
- Write cache enabled

Btw, if you have bad cabling and or termination, you will most likely notice it with settings. I also think the absolute maximum cable length when running SE SCSI at 20MHz is 1.5m.


/Patrik

[patrik]

@Framiga:

Thanks for the tip, I tried removing the UnitControl stuff from my Startup-Sequence and guess what - the settings were still the same. The same ones that I have set in the bootmenu even.

To make a long story short. Once upon a time when I evidently had some bad cabling/termination the bootmenu settings for synchronous and frequency did never seem to have any effect, thats why I tried using UnitControl once, forcing it to synchronous mode and making the computer unstable when accessing the harddrive .

When I got good cables and termination and felt good to go with synchronous mode, I just threw the UnitControl stuff back into the Startup-Sequence again as I didnt think the bootmenu stuff really worked.

Now it struck me that the reason it never seemed to care for my settings earlier was because the card/firmware probably senses if the cabling/termination is working more or less ok and doesn't activate synchronous mode for you if it is not ok.

Moments like this makes you feel a bit... ahem.. not too smart ;=).


/Patrik