Force Computers SYS68K/CPU-40, User Manual

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SECTION 8 APPENDIX TO THE INTRODUCTION TO VMEPROM
Only if the floppy drive is able to generate or read this signal.
2
DITO
3
DITO
4
A-5
A5. Local FDC and SCSI Controller
NOTE: The following chapter only applies to those CPU boards which contain an
installed EAGLE-01C Module.
VMEPROM supports up to two floppy disk drives and three Winchester disk drives together with the local
FDC and SCSI Controller. The floppy drives are installed automatically.
Here are the required floppy drive settings:
!
Drive select 2(0) or 3(1); VMEPROM access drive select 2 as disk 0 and drive select 3 as
disk 1
!
Head Load is to be executed if Motor On and Drive Select is TRUE.
!
Pin 34 of the floppy interface should select the Disk Change signal.
2
!
Pin 2 of the floppy interface selects high or normal density. When this signal is "low level", it
3
designates normal density mode. VMEPROM only operates under normal density.
!
Pin 4 should be the Eject signal.
4
The step rate used is 3 ms.
The Winchester drives are not installed automatically.
The VMEPROM FRMT command must be used for defining the following factors:
!
The physical structure of the drive (i.e. number of heads, number of cylinders, drive select number,
etc.)
!
The bad block of the Winchester drive
!
The partitions to be used
If this setup is done once for a particular drive, the data is stored in the first sector of the Winchester and
is loaded automatically when the disk controller is installed in VMEPROM. Upon viewing the VMEPROM
Banner, the driver for the local FDC and SCSI controller is already installed. For this driver, memory is
needed for hashing. The storage for the hashing buffers is allocated at the top of memory.