Scanned and OCR’d by Ian Matthews of www.commodore.ca – June 2003
1001 Disk Drive Addendum
Welcome to the world of massive storage of information. To use your 1001 disk drive with the Commodore 64 you will need an IEEE interface and a F-I cable. With a 8-128, 8032, or Pet computer you will only need a P-I cable. When using the 1001 disk drive with another disk drive, you will have to change the device number of one of the drives (All Commodore disk: units come from the factory with a device number of 8). Read the following section how change the device number, if you have more than one drive. The 1001 disk; drive has the same disk storage format as the 8250 disk drive.
How to Change the Device Number
The device number can be changed temporarily changed via a software command or program. The device number may be permanently by modifications within the disk unit.
Format for changing device number:
odn=old device number ndn=new device number
print#15,”m-w”chrs(12)chrs(C))chr$(2)chr$(ndn+32)chr$(ndn+64) close 15
Example of changing device number from 8 to 9:
** MISSING TEXT ** chr$ (2)chr$(9+32)chr$(9+64 )
** MISSING TEXT **
NOTE: The device number will only remain in effect as long as the disk drive power is on. Once the power is turned off the disk drive is set back to device number of 8.
NOTE: If you prefer not to change the device number at all, you can operate the 15`41 simply by unplugging the serial cable from the 1541 to the interface. To operate the SFD 1001 simply turn the 1541 OFF.
It’s an easy Job to permanently change the device number of your disk drive for use in multiple drive systems. The tools needed are a phillips-head screwdriver and a knife.
Steps to changing device numbers
1) Disconnect all cables from drive, including power.
2) Turn ‘ drive upside down on a flat, steady surface.
3) Remove the 4 screws holding disk drive box together.
4) Carefully turn drive right side up, and remove top drive and case.
5) Locate Chip A (towards the back of the follow Opition A or Opition B on the following page.
6) Replace the top case and 4 screws.
7) Reconnect cables and power up.
Changing to other device numbers:
By cutting the appropriate traces or bending the correct
pins, you can change the device number to 9 through 15.
NOTE: To change the device number back to 8 you have to put the pins back into the socket or connect the cut trace with some solder.
BACK OF 1001 DISK DRIVE
SIMPLE OPERATING INSTRUCTIONS
To get a program from the disk unit to the computers memory.
Format for LOAD Command:
To get a list of the programs or files on the disk.
To get a program from the computer’s memory to the disk.
Format for SAVE Commands
Before you use a disk command you must open a channel to the disk drive.
Format for sending DISK Commands:
NEW Disk Commands:
This command is necessary when using a diskette for the first time. The NEW
command erases the entire diskette, and creates the directory.
Format for NEW Command:
RENAME Disk Command:
This command allows you -to change the name of a file or program on the
Format for RENAME Command:
COPY Disk Command
This command allows you to copy any file on the disk drive. This will not let
you copy from one drive to another (unless you have a dual drive).
Format for COPY Command:
SCRATCH Disk Command
This command allows you to create unwanted files or programs from the disk,
which then makes room for new information.
Format for SCRATCH Command:
INITIALIZE Disk Commands
When an error condition prevents you from performing some operation, the
INITIALIZE command returns the disk drive to the same state as when powered up.
Format for INITIALIZE Command: