1. Introduction
6
FUNCTIONAL BLOCKS
The "Functional Block Diagram" below illustrates the board's major functional blocks. A
description of the board's features and functional blocks can be found in the following
topics.
ZT 8954
Floppy
Disk
Controller
®
Integrated
Floppy Disk Drive
(5.25", 3.5", or 3.5" Slimline)
Bus Interface
Interrupts
External
Floppy
Interface
Functional Block Diagram
STD 32 Bus Interface
STD bus interface logic decodes the I/O address for cycles destined for the floppy disk
controller. Control of the backplane data bus buffer is also performed in this logic for
both programmed I/O cycles and DMA cycles.
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