Path: utzoo!attcan!uunet!van-bc!
From: lphillips@lpami.wimsey.bc.ca (Larry Phillips)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Performance Rating w/ A2091 and Quantum ProDrive 40S
Message-ID: <1170@lpami.wimsey.bc.ca>
Date: 26 Feb 90 23:21:52 GMT
Lines: 29
Return-Path: <lpami!lphillips>
To: van-bc!rnews

In <SB*#6|&@rpi.edu>, jvmiller@ptolemy0.rdrc.rpi.edu (Jim Miller) writes:
>
>How do you move the ROM into the 32-bit RAM?
>I have a 2500/30 and using Diskperf I am getting about 340K reads
>with 32K buffers.  This seems a little slow since you are getting
>500K reads with the 2620.

The performance you get depends a LOT on the controller/drive. (that's
controller, as in not the 2090 or 2091), and there are controllers out there
that will not do much better than 340K/sec.

You can put the ROM into 32 bit ram with SetCPU, using the 'cardrom' option. It
takes a filename as an argument. Mine specifies 'S:CardRomList', which contains
the line..

0x202 0x01 0x10000 0x8000 0x4000 CBM_2090A_Disk_Controller

This may vary for the 2091.

-larry

--
Gallium Arsenide is the technology of the future;
  always has been, always will be.
+-----------------------------------------------------------------------+ 
|   //   Larry Phillips                                                 |
| \X/    lphillips@lpami.wimsey.bc.ca -or- uunet!van-bc!lpami!lphillips |
|        COMPUSERVE: 76703,4322  -or-  76703.4322@compuserve.com        |
+-----------------------------------------------------------------------+