DSKPTH/DSKPTL

Address Name Description DFF020 DSKPTH Disk Pointer (high 5 bits) (old-3 bits) DFF022 DSKPTL Disk Pointer (low 15 bits)

Overview

This pair of registers contains the 20 bit address of disk DMA data.
These address registers must be initialized by the processor or
coprocessor before disk DMA is enabled.

• Hardware