Problem with a SCSI CD-ROM DRIVE

Ok guys, here is my problem...

I just bought a CD-ROM and am trying to get it to work with my MPC3000. I know that the internal zip is on SCSI ID 1 as a default. When I select it, works fine. However, when I try to find the CD-ROM via auto search, I get no SCSI found message & when I set it to the SCSI ID, same thing. I tried 6,5,4,3 & 2 ID's but again nothing. What am I missing?

Rohan, I know you helped me answer a similiar question before here:

http://www.mpc-forums.com/viewtopic.php ... highlight=

I dont see any conflicts with the ID's. As I said, the internal zip is set to SCSI ID 1 & I've tried setting the CD-ROM to the other available ID's.

One last thing, I have a few disc S3000 disc & one I created on my Mac with MPCPGMMAKER. All files on this disc are PGM files.

Thanks, in advance for your help.

switch18 wrote:When I select it, works fine. However, when I try to find the CD-ROM via auto search, I get no SCSI found message & when I set it to the SCSI ID, same thing. I tried 6,5,4,3 & 2 ID's but again nothing. What am I missing?.

The "AUTOSEARCH" looks for correctly MPC formatted media before making a drive active/available.

None is present in your CD-ROM drive by the sounds of it.

switch18 wrote:One last thing, I have a few disc S3000 disc & one I created on my Mac with MPCPGMMAKER. All files on this disc are PGM files.
Thanks, in advance for your help.

Stick the S3000 format disk in the CD-ROM drive and use the option 8 function in your MPC3000 disk menu.

As for the other file formats ? It's not going to be a case of just making a disk full of files and expecting the MPC3000 to see it ...

Rohan.

Rohan, tried what you said. No dice.

I wanted to check the CD-ROM and the disc too. So, I hooked up the CD-ROM to an MPC2000XL and every disc worked.

So is my problem coming from the disc itself? Is there a formatting problem?

anybody else?

switch18 wrote:Rohan, tried what you said. No dice.

I wanted to check the CD-ROM and the disc too. So, I hooked up the CD-ROM to an MPC2000XL and every disc worked.

So is my problem coming from the disc itself? Is there a formatting problem?

Ok ... here goes as best possible.

If the disk is a non standard AKAI S series one then there maybe a problem with an MPC3000 reading it in a correct manner. ( not all S series CDROMS are made equal ... in particular some bootlegs, bad copies and hybrid sampler format types )

If the CDROM is a regular one that can be read in a WIN/MAC/UNIX/LINUX box containing *.PGM and *.SND then the MPC3000 will not read it.

If the drive is simply one that is not supported by the MPC3000 then no disc will be read. ( some NEC and TEAC models don't work ... others ... do ).

Also ... there is another point.

Look for a jumper on your CD-ROM drive mechanism that indicates "device sector size".

If the device is a CD-ROM drive and set on 1024 bytes per sector mode by default then the MPC3000 will not communicate with the drive.

Some quality earlier SCSI CD-ROM mechanisms can have their bytes per sector sizing switched between 512, 1024, 2048 and even some other values for pure RAW mode sector reading of extra data on the disc.

Some drive mechanisms don't allow sector size changing via jumper switch and wait for a special and unique manufacturer specific SCSI device initiation command from a host to set them into a particular bytes per sector read mode. ( drive by drive and so on basis ).

Other drives mechanisms have a locked bytes per sector read mode that can't be changed easily.

The MPC3000 supports 512 and 2048 bytes per sector devices.

The MPC3000 does not force set or work around non-compliant CD-ROM drives; as having a table of how to handle every special drive circumstance would blow code space out of the water.

An MPC3000 gets the capability of what a drive can support by querying it at a rudimentry level.

If the drive responds with the wrong capabilites ... then no go.

The MPC2000XL simply has support for the other device bytes per sector value of 1024 and ... can also read the standard CDROMS that can be created for use on a MAC/WIN/LINUX/UNIX system.

All I can think of right now.

Rohan.

Rohan,

This seems to make the most sense. I'll keep trying to make it work, but I think you might be right. Looks like I will have to keep sampling everything in manually!

Cheers.

Ok, I got the CD-ROM to be recognized. As simple as setting it to SCSI ID 0. Thats weird that it only worked on that. It read by using #8 S3000 on disk menu. I hit the load pgm/snd too. I tried every combo except for 0. hmmm?

lots of I's in this post....I,I,I,I,!!!!!!!

Thanks for your help.