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Author Topic: Internal a1200 IDE interface  (Read 11637 times)

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Offline Franko

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Re: Internal a1200 IDE interface
« Reply #29 from previous page: March 19, 2011, 04:48:31 PM »
Quote from: mongo;623067
Not true. IDE hard drives don't use SCSI commands at all. ATAPI devices such as optical drives use SCSI commands.


I was about to say I've only ever written utils for ATAPI/EIDE DVD & CD drives which of course use SCSI (even though they are connect to the IDE port) commands and then say you are of course correct... :)

But, I have also written one piece of software for EIDE/IDE HDs for reading and writing the RDB block and this uses SCSI commands, so now I'll have to say your incorrect... :)
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Offline Digiman

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Re: Internal a1200 IDE interface
« Reply #30 on: March 19, 2011, 05:11:53 PM »
Get a 7200 RPM HDD with a reasonable cache and it will help the standard IDE.
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Offline mongo

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Re: Internal a1200 IDE interface
« Reply #31 on: March 19, 2011, 05:48:54 PM »
Quote from: Franko;623093
I was about to say I've only ever written utils for ATAPI/EIDE DVD & CD drives which of course use SCSI (even though they are connect to the IDE port) commands and then say you are of course correct... :)

But, I have also written one piece of software for EIDE/IDE HDs for reading and writing the RDB block and this uses SCSI commands, so now I'll have to say your incorrect... :)


Nope. scsi.device includes limited emulation of some SCSI commands, so even though your program might be using SCSI commands, the hard drive isn't.
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Offline Franko

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Re: Internal a1200 IDE interface
« Reply #32 on: March 19, 2011, 06:27:53 PM »
Quote from: mongo;623113
Nope. scsi.device includes limited emulation of some SCSI commands, so even though your program might be using SCSI commands, the hard drive isn't.


True... but the point is you still write the code using SCSI commands that the driver basically interprets into the correct hex values to send to the device. Also the later scsi.device Ver50+ covers virtually all the scsi commands needed for HD/Optical media and can hardly be called limited... :)
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Offline Mizar

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Re: Internal a1200 IDE interface
« Reply #33 on: April 05, 2011, 02:28:33 AM »
Quote from: Digiman;623099
Get a 7200 RPM HDD with a reasonable cache and it will help the standard IDE.


How does a 5400RPM 8MB cache drive sound for that?

Though I'm not sure it would matter how fast of an HD it is, on my system.  I seem to be getting only around 190KB/sec (502MB in somewhere around 45min.).  An 030 should be getting around 2MB/sec. plus is what was said earlier in this thread.  I don't think this is anything new with this HD though.  I seem to remember my previous HD getting something around that poor of a speed too, I just didn't time it really or know what speed it should be getting.  2MB/sec. seems plenty fast to me, but 190KB/sec. sure doesn't.  I wonder what could be slowing things down so much?
« Last Edit: April 05, 2011, 02:56:43 AM by Mizar »
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Amiga Tech. A1200: Apollo 1230/40 MHz & 882/50 MHz, 32 MB fast RAM, WD 298 GB HD (320 SI GB), Sony 1760 KB floppy, Surf Squirrel SCSI-II & buffered  serial, Ricoh CDRW 6x4x24, USR 33.6 Kbps modem, MV1200 scan doubler, Compaq 17" SVGA, KS 3.1, OS3.9 BB1, Genesis 45.7, Miami 3.2b, AWeb 3.5.09 APL

C= A500: 68000, 512 KB chip, 512 KB fast, 880 KB floppy x 2, 1084S, KS 1.3, OS 1.3
 
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