Specifications

Index
electrical/environmental differences ..........................13-8
functional differences
.................................. 3-29, 13-2
halt with restart via interrupt
................................. 13-6
logic family
................................................. 13-2
CNTRL*
...................................................... 1-11
COM1
......................................... 1-9, 2-16, 3-5, A-50
configured for DCE operation
............................... A-24
configured for DTE operation
............................... A-23
COM2
................................................1-9, 2-16, 3-6
configured as RS-232-C DCE
............................... A-18
configured as RS-232-C DTE
............................... A-19
configured as RS-422 DCE
................................. A-20
communications element (VL 16C452)
.......................... 8-2
block diagram
................................................ 8-9
compatibility with IBM PC
................................. 1-1, 1-9
configuring the ZT 8809A
...................................... A-1
for STD DOS
............................................... 2-13
for STD ROM
................................................2-9
connectors
......................................................B-9
control flags
.................................................... 6-8
Control Logic
..................................................12-9
cooling systems
................................................. 2-6
coprocessor interface
............................................ 7-7
counters
program counter
.............................................6-10
counter status format
..........................................11-12
counter/timers
..................................1-10, 3-8, 5-15, 11-1
architecture
................................................. 11-4
block diagram
............................................... 11-3
counter latch command
...................................... 11-8
counter use by STD DOS and STD ROM
................... 11-25
mode definitions
........................................... 11-16
operation common to all modes
.............................11-23
programming
................................................11-6
readback command
.........................................11-11
read operations
.............................................. 11-8
reset state
................................................... 11-6
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