191 lines
8.1 KiB
Plaintext
191 lines
8.1 KiB
Plaintext
BASIC INSTALLATION PRODCEDURE for ESDI Drives
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by Ryan Ramsey -- July 3, 1992
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All Micropolis ESDI need to be low-level formatted on the controller you
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intend to use them with. Because of this, and with all ESDI drives, if you
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ever switch the controller, you will also need to back-up your data, and
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low level format the drive again. ESDI drives need a little more attention
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to configuration than SCSI drives do. The major things that must be done
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are setting up your system CMOS, drive addresses, sector size, and termination.
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SETTING UP THE CMOS
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-------------------
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In order for your computer to use an ESDI drive, it must first be
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denoted in your system CMOS. The first thing you must do is go into
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your system CMOS and set your drive types accordingly. Most CMOS's
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allow you to select a type from 0 (not installed) to 47, where 47
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is a user-defined entry and 1-46 are preset types.
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For all Micropolis ESDI drives, you should set your type to drive
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type 1. On intelligent BIOS's, it will tell you you only have a 20MB
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drive, but when it comes time to low level format the drive, this
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drive type will indicate to the controller card to pull the parameters
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off the physical drive and set itself up.
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If your are installing only one drive, then only your DRIVE 0, or
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DRIVE C, parameter should be set to drive type 1. If you are setting
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up two drives, both DRIVE 0/C and DRIVE 1/D must be set to 1, once
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again, regardless of what the capacity comes out to.
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NOTE: These settings are for ESDI drive only! If for example you have
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one ESDI drive and one SCSI drive, you will only set DRIVE 0/C to
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drive type 1. SCSI drives will set themselves up.
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After this is accomplished, the setup should be saved and exited and
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the system will then reboot.
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SETTING DRIVE ADDRESSES
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-----------------------
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In order for your machine bus to be able to tell where it is getting its
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information from, it is neccessary for each drive to have a particular
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drive address. This number, is set with jumpers on the circuit board side
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of the drive. The jumper block will be labeled as follows:
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DA1
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|DA2
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| | DA3
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___________|_|_|_
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| . . . . . . . . |
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| . . . . . . . . |
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-----------------
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| | | | |
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W1 | | | |
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W2 | | |
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W3 | |
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W4 |
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W5
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The first part of this jumper block (The 'W' series) sets your sector
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size and bytes per track. In most cases it should be set only to W2,
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which sets it for the factory standard, yielding the most capacity at
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512-Bytes per Sector. If you are using a very slow machine such as the
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IBM-XT, you will also want the W1 jumper installed (Write Fault Latch).
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If another configuration is needed, you find out the sector sizes and
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bytes-per-track numbers from your drives specification sheet.
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The next part is to set your drive address, and this is done with the
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DA jumpers (they could be labeled DS in older models). These jumpers
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are not only related to your drive (whether it is primary or secondary),
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but also to your cable. If you have a twisted cable (there is a physical
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twist in the cable between the first and last nodes), the scheme will be
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a little bit different. To find out how you should have this section
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jumpered, follow this basic configuration.
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ONE DRIVE SYSTEM (Primary Drive)
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The primary drive should always be connected to the last (end) node
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of your cable.
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TWISTED CABLE: Jumper on DA2 ONLY.
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FLAT CABLE: Jumper on DA1 ONLY.
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TWO DRIVE SYSTEM (Primary and Secondary Drive)
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Once again, the primary drive should be connected to the last (end)
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node of your cable, and the secondary drive in the middle (first)
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node of the cable.
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TWISTED CABLE: Primary at DA2, Secondary at DA2
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FLAT CABLE: Primary at DA1, Secondary at DA2
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NOTE: If your cable has the twist CLOSEST to the colored stripe, you
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are using a FLOPPY cable, and this will not work!
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DRIVE TERMINATION
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-----------------
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Termination is something that causes a lot of undue grief for everyone, but
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the concept is really simple.
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"Only the last drive on the CABLE must be terminated,
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all others should be un-terminated."
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and
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"The chain must be terminated on both ends."
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The controller must be terminated (which is the way it comes from 99.99%
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of the manufacturers) AND the very last drive/component on the CABLE
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(do not get "the last drive on the cable" confused with the "last drive,
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which would be the highest DRIVE ADDRESS").
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Therefore, a graphic display would look as follows:
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____
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/ \
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| HOST |=====DEVICE=====DEVICE
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\____/ | |
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| UN-TERMINATED |
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TERMINATED TERMINATED
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(Usually default)
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So once again:
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If you have only one drive, it is to be TERMINATED.
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If you have more than one drive, all drives must be UN-TERMINATED
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except for the last PHYSICAL drive on the CABLE which must
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be TERMINATED.
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CABLE INSTALLATION
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------------------
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Once the two above items are checked and configured, all you need to
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do then is put the drive on the cable (matching the red stripe on the
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cable to pin one on the controller card) and then power on.
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NOTE: If you have a twisted cable, if the twist is closest to the
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COLORED stripe, you will NOT be able to use it because it
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is a FLOPPY cable. You must get either a FLAT cable or a
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TWISTED cable where the twist is furthest away from the colored
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stripe.
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TROUBLESHOOTING GUIDE
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---------------------
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PROBLEM
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Cannot see the drive.
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REMEDY
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1. Did you set your Drive 0 to type 1 in your CMOS?
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2. Check your drive address, it may be in the wrong location.
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3. Check your sector size. Most computers use 512-bytes per sector
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and if your drive is set up otherwise, it may not be able to
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see it. Set the drive to the factory default (W2).
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PROBLEM
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When booting up the system, the machine gets hung up at the bios
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banner of the controller card.
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REMEDY
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There are a few possibilities for this problem.
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1. There are two drives with the same drive address.
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Verify that all drives have different SCSI ID's.
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3. There could be a bios conflict.
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Change the bios address of the controller card to a different
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memory location.
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4. There could be a conflict with add in boards. Check and make sure
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that there are no memory conflicts with any add in boards or
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bios's, check DMA's, IRQ's, and port addresses.
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PROBLEM
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When you boot up, the computer gives you a message along the lines
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of "Drive C not found" or "Drive 0 not found".
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REMEDY
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Check your drive addressing jumpers, they are most likely set
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incorrectly. Also, check your cables, they may not be seated
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properly.
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If you are experienceing a problem that is not approached in this
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document or you continue to have problems, you may do one of the
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following:
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1. Call our Technical Support Line at (818) 709-3325.
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2. Call our BBS at (818) 709-3310 and leave an email to the Sysop.
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3. FAX your request to us at (818) 718-5352.
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4. Mail your request to:
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Micropolis Corporation
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Attn: Technical Support
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21211 Nordhoff Street
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Chatsworth, CA 91311
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