From: dac@prolix.apana.org.au (Andrew Clayton)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: PPS 040 & GVP HD Problems
Date: Wed, 14 Oct 1992 12:31:21 GMT
Organization: More like Dis~, really.
X-Newsreader: Arn V1.00 beta rel2

In article <9210111002.AA16902@lux.levels.unisa.edu.au>, Michael Portmann writes:

> A friend of mine with a 2000 _HAD_ the following setup:
> 
>   - 2000 with 1 meg chip.
>   - PPS 040 in the CPU slot, 2 Meg ram in autoconfig and 6 Meg in nonauto.
>   - 2091 with 2 Meg 16bit ram and a 52 Meg Quantum drive.
> 
> He wanted to get a new controller to speed up disk access and so bought a
> GVP Series II hard drive controller card.

Uh uh.

> He put the Quantum drive on the GVP controller and it seemed to work ok. He
> still left the 2091 card with 2meg ram since the GVP card uses SIMMS and he
> didn't really want to buy any more memory. (Just faster disk access)
> 
> Now his problem is whenever he writes to the harddrive, serial data gets
> corrupted. Using JR-Comm, when jrcomm writes the 16k buffer to the HD, the
> next block gets a CRC error.

Yep. The GVP controller is stealing CPU cycles away from the
serial.device, but seemingly only when you use an accellerator,
and the file transfer screws up.

Here's GVPPATCH, which should fix the problem.  Alternatives are
downloading to the old disk drive [there is nought wrong with
using the 2091 AND the GVP] - since your friend moved his disk
drive, that's a minor problemette.  :-)

I get around the problem by downloading to my 44MB Rodime ST506
[2090a controller], and copying it to the 200mb Quantum [GVP
series II] after the transfer is complete.

Dac
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dac@prolix.apana.org.au              David Andrew Clayton.           // _| _  _
dac@prolix.sserve.cc.adfa.oz.au      Canberra, Australia           \X/ (_](_](_

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