Specifications

EPC-2 HARDWARE REFERENCE
100 MB AT type 33 Use FDISK; specify 115 MB maxi-
mum for all partitions
Specify a maximum of 13950
tracks total for all partitions
200 MB AT type 36 Use FDISK; specify 200 MB maxi-
mum for all partitions
Specify a maximum of 6550
tracks total for all partitions
50 MB AT type 12 Use FDISK; specify entire disk Automatic
110 MB AT type 40 Use FDISK; specify entire disk Automatic
240 MB AT type 39 Use FDISK; specify entire disk Automatic
400 MB AT type 41 Use FDISK; specify entire disk Automatic
BUS PRIORITY
This field allows you to select among the four VXIbus priority levels. This is the level
at which the EPC-2 will contend for the bus when it performs a VXIbus access.
BUS RELEASE METHOD
This field allows you to toggle between two bus release modes: ROR (release on re-
quest) and RONR (request on no request, also known as the VXI fair-requester mode).
ROR results in slightly better EPC-2 performance when accessing the VXIbus; RONR
directs the EPC-2 to not "park" on the bus and thus slightly improves the access time of
other VXIbus masters to the bus.
BUS ARBITRATION
This field toggles between the two arbitration algorithms provided by the EPC-2 when it
is configured as the slot-0 system controller: priority arbitration and round-robin ar-
bitration.
SLOT 0 FUNCTIONS
When the EPC-2 is configured as the slot-0 controller, this field allows you to specify
INTERNAL CLOCK, meaning that an internal oscillator will generate the 10 MHz
CLK10 signals, or EXTERNAL CLOCK, meaning that you are providing a front-panel
10 MHz clock input from which the EPC-2 should derive the CLK10 signals.
When the EPC-2 is configured as not a slot-0 controller (via the jumper settings de-
scribed in Chapter 2), this field must be set to NONE.
PARALLEL PORT MODE
The printer port can be configured in two modes. NORMAL (PRINTER) mode con-
figures the port identically to the configuration in most PCs. INPUT ONLY
(SCANNER) configures it for parallel input devices.
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