Ns Pc87332Vf Feature Summary; Flexible Drive Controller (Fdc) - HP Vectra 510 Technical Reference Manual

1 HP Vectra 500 Series
Principal Components and Features

NS PC87332VF Feature Summary

Function
Flexible disk controller
UARTs
Bidirectional parallel port
Address decoder
Enhanced power management

Flexible Drive Controller (FDC)

The FDC is software and register compatible with the 82077AA, and 100%
IBM compatible. It has an A and B drive-swapping capability and a non-burst
DMA option.
16
Features
Software compatible with the DP8473, the 765A, and the
N82077
16-byte FIFO (default disabled)
Burst and non-burst modes
Perpendicular recording drive support
New high-performance internal digital data separator (no
external filter components required)
Low-power CMOS with enhanced power-down mode
Automatic media-sense support
Software compatible with the PC16550A and PC16450
MIDI compatible
Enhanced Parallel Port (EPP) compatible
Extended Capabilities Port (ECP) compatible
Bidirectional under either software or hardware control
Ability to multiplex FDC signals on parallel port pins for external
FDD
Includes protection circuit against damage caused when printer
is switched on, or operated at higher voltages
Provides selection of all primary and secondary ISA addresses
including COM 1 - 4 and LPT 1 - 3
Special configuration registers for power down
Enhanced programmable power down FDC command
Auto power down and wake up modes
3 special pins for power management
Typical current consumption during power down is less than
10µA
Reduced pin leakage current