Plus Development Corporation
Pus Hardcard 40

I received the drivers and utilities from Pat Youngers, over the INTERNET.
The following is from the message accompanying the sofware.

"
There is an addendum for "any IBM computer using DOS 3.3". It mentions 2 
items of interest:

1.      If you want to customize the volume size, use DIVIDE.COM to set the 
        number and size of volumes.

2.      When using FDISK, choose the option to make the entire volume a 
        "Primary DOS Partition".

        Do not try to low-level format the drive. The manual says it won't 
        let you anyway.

The drive comes pre-configured as two 20MB volumes.
Disk contents:

ATPLUS.COM      used to patch DOS 3.1 or 3.2 to allow DOS to access volumes
                larger than 32 MB. You may not need this with DOS 3.3 or UP.
                It actually modifies some parts of DOS.

DIVIDE.COM      used to create custom volume sizes. Automatically patches DOS
                3.1 and 3.2.

LIGHT.COM       displays a visible '+' to show drive access. Command line =
                LIGHT ON or LIGHT OFF.

SOUND.COM       emits an audible prompt to show drive access. Comand line =
                SOUND ON or SOUND OFF.

PLUSDRV.SYS     Used to enable DOS to access more than 2 volumes. Add the
                line DEVICE=PLUSDRV.SYS to config.sys. You may not need this 
                with DOS 3.3 or higher.

                DRIVE SETTINGS
                Jumper 1-2                      Jumper 2-3
Controller #    0                               1
BIOS ADDR.      C8000h                          CA000h
Port Addr.      320h to 323h                    324h to 327h
DMA CH.         3                               3
IRQ.            5                               5
Do not operate above 10,000 feet.
Do not operate above 50 degrees celcius.
"

WHen I first attempted to install the drive I had to add the device driver 
(under DOS 6.22) to allow DOS to see the drives. When DIVIDE configures the
drive as more than 1 volume, the volumes actually appear as, seperate, 
physical drives to the system. (i.e. FDISK sees Drive 1 and 2).

To reconfigure the drive as one volume you have to pick "divide drive into
more than one volume" from the menu provided. Once you get into the sub
menu there is an option to "configure the drive as one volume".

Once you have the drive configured as one volume it will run under DOS
6.22 without using the device driver.


