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Author Topic: How to prepare 40Gb Drive for A600  (Read 7322 times)

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Offline Oldsmobile_Mike

Re: How to prepare 40Gb Drive for A600
« Reply #14 from previous page: November 13, 2013, 06:25:06 AM »
@Paul1981 -
 
You sir, I owe you *all* the beer!
 
 
:drink::drink::drink::drink:
 
 
I struggled for hours trying to get PFS working on my A2000 without success. I'd put it on the back-burner of my long list of projects until I saw your post, which I followed up until the part about loading the OS on (since I already had 3.9 on a backup partition and just moved it over).
 
Your instructions worked perfectly, and contained info like the 0x50465303 identifier that I couldn't find anywhere else. Now booting off a PFS-formatted 8GB CF card in my MechWare reader, SysSpeed reports that my Create/Open/Dirscan/Delete/Seak/Read operations have gone from about 50% faster to over 400% faster, depending on the operation. Thank you so much!!! The GeForce 040 controller is still a bit of a slug, but at least now it's a fast slug!!! :banana:
 
Just one question which I know everyone hates: In your post you mentioned MaxTransfer of 0x1fe00 and Mask of 0xfffffffc. I've read in other posts that those are the correct values for A1200 IDE controllers when using a CF, but since I'm using SCSI I can use MaxTransfer of 0x7FFFFFFF and Mask of 0xFFFFFFFF. If I understand correctly this should have the effect of transferring data in larger chunks, since I'm not limited by the IDE bus. Thoughts on which would be "more correct"?
 
 
Thanks again! :drink:
 
Only 472 things to do to have this system complete, LOL. ;)
« Last Edit: November 13, 2013, 06:39:05 AM by Oldsmobile_Mike »
Amiga 500: 2MB Chip|16MB Fast|30MHz 68030+68882|3.9|Indivision ECS|GVP A500HD+|Mechware card reader + 8GB CF|Cocolino|SCSI DVD-RAM
Amiga 2000: 2MB Chip|136MB Fast|50MHz 68060|3.9|Indivision ECS + GVP Spectrum|Mechware card reader + 8GB CF|AD516|X-Surf 100|RapidRoad|Cocolino|SCSI CD-RW
 Amiga videos and other misc. stuff at https://www.youtube.com/CompTechMike/videos
 

Offline paul1981

Re: How to prepare 40Gb Drive for A600
« Reply #15 on: November 14, 2013, 11:55:56 PM »
@ Oldsmobile_Mike...

You're welcome mate. Glad that it's been of help to someone. :)

As for your Mask & MaxTransfer question, I've hunted out my Hard Drive manual and it says (for reference):

Mask = "Displays the hex number that defines which areas of memory can be used with Direct Memory Access (DMA)."

MaxTransfer =  "Displays the hex number that determines the maximum number of bytes to be moved during each DMA transfer."


Do you have the manual for your G-Force 040/SCSI? If not it should be downloadable somewhere and hopefully it will give correct values. There's a similar thread here regarding Mask & MaxTransfer which I have found on A.Org: http://www.amiga.org/forums/archive/index.php/t-59298.html
I've read may times that MaxTransfer doesn't affect speed, so I wouldn't worry about that one. As for Mask, I haven't a clue, but Zac67 in the above thread appears to know his stuff. Also remember, if it aint broke don't fix it. I'll have those beers now thanks! :drink::drink::drink::drink: