Sony cd rom

Dave_wb · 01 April 2005, 14:01

Hi again guys,
Just thought I would post my success in getting a scsi cdrom drive going thanks to your input.Weird thing is though that I had to make a System:devs/dosdrivers as follows:
Activate=1
Device=squirrelscsi.device
Unit=3
Donotwait
Flags=1

I dont understand how a cdrom utilises unit=3 when it should be 0.Any thoughts on this matter would help in my confusion as to how I am running the cdrom player on the "wrong" settings.

TikTok · 01 April 2005, 19:00

No, 3 is fine. The UNIT is the SCSI ID. SCSI supports up to 7 devices. Usually the SCSI controller itself is UNIT 7 (or is it 0?). Each device in the chain must have its own unique ID. I know it seems strange to use ID 3 for a single CDROM, but with SCSI certain devices typically go at certain IDs. CDROMs are usually 3 or 4, HDs are 5-6 IIRC, and so on. There is no problem with your setup. Glad its now working properly

Dave_wb · 02 April 2005, 16:31

Hi TikTok,
Thanks for your reply to my query.I shall remember this from now on! I have a classic 1200 and as well as a hard drive and cdrom I am now fitting a zip drive.I have a ribbon cable (via idefix hardware) protruding from the left hand side of the miggy and a set of wires extending from the front (to insert into the zip).It's amazing what can be added....I dont want to ever go for a tower as it will then start to resemble my pc's.Now that's a horrid thought!Thanks again and have a good weekend
Dave

lloyd · 02 April 2005, 18:06

Dave, now have suitable packaging for this other SCSI CD drive. You still want it?

Tiktok... It's unit 7 mate.

Jope · 02 April 2005, 20:57

The controller is usually at ID 7 (even in Wide systems)

TikTok · 02 April 2005, 21:21

Well, UNIT 7 was one of my guesses!

Anyone got a full list of the recommended IDs for each device type?

Jope · 02 April 2005, 21:23

You can use anything you like, as long as the ID isn't in use yet in your current SCSI chain.

It's a good idea to have the boot HD as unit 0 (if your controller is of the autobooting variety), as then it is found faster when the driver initialises the SCSI controller and searches for the devices.

When I set up a SCSI chain, I usually make a habit of setting the devices to the same IDs as their physical order on the cable. Makes things clearer, but of course it is in no way a must.

TikTok · 02 April 2005, 21:29

Hmmm, I remember my Squirrel SCSI manual giving a list of 'recommended' positions for each device type (scanner, HD, CDROM, etc). But I agree, having the order and IDs the same makes a lot of sense.

Jope · 02 April 2005, 21:34

If you have for example more HDs in your chain than what is anticipated in the recommendations, what happens then? Don't worry about the recommendations too much. :-)

Basically HDs first and everything else in the end is my rule of thumb.

And don't forget to terminate the last physical device on the chain! :-)

zipper · 02 April 2005, 21:41

And disable the unused IDs for faster startup scan (or set last device flag).

Dave_wb · 04 April 2005, 13:05

Hi Tiktok,
Yes I would love to have the drive but I insist on paying you for it.As the Yanks would say "there's no such thing as a free lunch"What that has to do with computers I have no idea.....thought I would put it in anyway....
Dave

lloyd · 04 April 2005, 19:14

Yanks? You mean our American cousins??

Since you insist on paying for it, even tho I've lost count of the number of times I've said you can have it for free, I've decided to set the "fee" at 5p. That's right, a nice shiny silver 5 penny piece - plus the cost of postage of course. Dunno how much that'll be but when you get the drive, look at the value of the stamps stuck on the front of the package.

01 April 2005, 14:01	#1
Dave_wb Registered User Join Date: Jan 2005 Location: Wootton Bassett England Age: 66 Posts: 193	Sony cd rom Hi again guys, Just thought I would post my success in getting a scsi cdrom drive going thanks to your input.Weird thing is though that I had to make a System:devs/dosdrivers as follows: Activate=1 Device=squirrelscsi.device Unit=3 Donotwait Flags=1 I dont understand how a cdrom utilises unit=3 when it should be 0.Any thoughts on this matter would help in my confusion as to how I am running the cdrom player on the "wrong" settings.

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01 April 2005, 19:00	#2
TikTok Registered User Join Date: Jul 2001 Location: Malayasia Age: 43 Posts: 657	No, 3 is fine. The UNIT is the SCSI ID. SCSI supports up to 7 devices. Usually the SCSI controller itself is UNIT 7 (or is it 0?). Each device in the chain must have its own unique ID. I know it seems strange to use ID 3 for a single CDROM, but with SCSI certain devices typically go at certain IDs. CDROMs are usually 3 or 4, HDs are 5-6 IIRC, and so on. There is no problem with your setup. Glad its now working properly

02 April 2005, 16:31	#3
Dave_wb Registered User Join Date: Jan 2005 Location: Wootton Bassett England Age: 66 Posts: 193	Hi TikTok, Thanks for your reply to my query.I shall remember this from now on! I have a classic 1200 and as well as a hard drive and cdrom I am now fitting a zip drive.I have a ribbon cable (via idefix hardware) protruding from the left hand side of the miggy and a set of wires extending from the front (to insert into the zip).It's amazing what can be added....I dont want to ever go for a tower as it will then start to resemble my pc's.Now that's a horrid thought!Thanks again and have a good weekend Dave

02 April 2005, 18:06	#4
lloyd Mehh :D Join Date: Nov 2004 Location: Bristol, SW UK Age: 61 Posts: 242	Dave, now have suitable packaging for this other SCSI CD drive. You still want it? Tiktok... It's unit 7 mate.

02 April 2005, 20:57	#5
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,880	The controller is usually at ID 7 (even in Wide systems)

02 April 2005, 21:21	#6
TikTok Registered User Join Date: Jul 2001 Location: Malayasia Age: 43 Posts: 657	Well, UNIT 7 was one of my guesses! Anyone got a full list of the recommended IDs for each device type?

02 April 2005, 21:23	#7
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,880	You can use anything you like, as long as the ID isn't in use yet in your current SCSI chain. It's a good idea to have the boot HD as unit 0 (if your controller is of the autobooting variety), as then it is found faster when the driver initialises the SCSI controller and searches for the devices. When I set up a SCSI chain, I usually make a habit of setting the devices to the same IDs as their physical order on the cable. Makes things clearer, but of course it is in no way a must.

02 April 2005, 21:29	#8
TikTok Registered User Join Date: Jul 2001 Location: Malayasia Age: 43 Posts: 657	Hmmm, I remember my Squirrel SCSI manual giving a list of 'recommended' positions for each device type (scanner, HD, CDROM, etc). But I agree, having the order and IDs the same makes a lot of sense.

02 April 2005, 21:34	#9
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,880	If you have for example more HDs in your chain than what is anticipated in the recommendations, what happens then? Don't worry about the recommendations too much. :-) Basically HDs first and everything else in the end is my rule of thumb. And don't forget to terminate the last physical device on the chain! :-)

02 April 2005, 21:41	#10
zipper Registered User Join Date: Mar 2004 Location: finland Posts: 1,841	And disable the unused IDs for faster startup scan (or set last device flag).

04 April 2005, 13:05	#11
Dave_wb Registered User Join Date: Jan 2005 Location: Wootton Bassett England Age: 66 Posts: 193	Hi Tiktok, Yes I would love to have the drive but I insist on paying you for it.As the Yanks would say "there's no such thing as a free lunch"What that has to do with computers I have no idea.....thought I would put it in anyway.... Dave

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

04 April 2005, 19:14	#12
lloyd Mehh :D Join Date: Nov 2004 Location: Bristol, SW UK Age: 61 Posts: 242	Yanks? You mean our American cousins?? Since you insist on paying for it, even tho I've lost count of the number of times I've said you can have it for free, I've decided to set the "fee" at 5p. That's right, a nice shiny silver 5 penny piece - plus the cost of postage of course. Dunno how much that'll be but when you get the drive, look at the value of the stamps stuck on the front of the package.