Specifications

Illustrations
Figure 11–3 Control Word Format. .............................. 11-7
Figure 11–4 Counter Latch Command Format.
.................... 11-9
Figure 11–5 Counter Status Format.
............................ 11-12
Figure 11–6 Null Count Operation.
............................. 11-13
Figure 12–1 V20 Interrupt Vector Table.
......................... 12-5
Figure 12–2 8259A Block Diagram.
............................. 12-7
Figure 12–3 8259A ICW Formats.
.............................. 12-13
Figure 12–4 8259A Operation Control Word Formats.
............ 12-17
Figure 12–5 8259A Interrupts.
................................. 12-23
Figure A–1 W1 - W12 Jumper Block.
............................ A-2
Figure A–2 W13 - W32 Jumper Block.
.......................... A-11
Figure A–3 COM2 Configured as RS-232-C DCE.
............... A-18
Figure A–4 COM2 Configured as RS-232-C DTE.
............... A-19
Figure A–5 COM2 Configured as RS-422 DCE.
................. A-20
Figure A–6 COM2 Configured for RS-485 Operation.
............ A-21
Figure A–7 COM1 Configured for DTE Operation.
............... A-23
Figure A–8 COM1 Configured for DCE Operation.
.............. A-24
Figure A–9 W33-W36, W38-W46, W68 Jumper Blocks.
.......... A-26
Figure A–10 Socket 3D1 Configuration.
.......................... A-31
Figure A–11 W37, W47-50, W66-W67 Jumper Blocks.
............ A-34
Figure A–12 W51 - W59 Jumper Block.
.......................... A-37
Figure A–13 W60 - W65 Jumper Block.
......................... A-46
Figure A–14 ZT 8809A User Configuration.
...................... A-54
Figure A–15 Non-DOS Factory Default Jumper Configuration.
..... A-55
Figure A–16 ZT 8809A Configured for STD DOS.
................ A-56
Figure B–1 Board Dimensions Without zSBC 337.
................ B-7
Figure B–2 Board Dimensions With zSBC 337.
................... B-8
Figure B–3 P/E Connector Pinout.
.............................. B-11
Figure B–4 ZT 8809A Connector Locations.
..................... B-12
Figure B–5 ZT 90014 Cable Drawing.
.......................... B-20
Figure B–6 ZT 90027 Cable Drawing.
.......................... B-21
Figure B–7 ZT 90039 Cable Drawing.
.......................... B-22
Figure B–8 ZT 8809A CLOCK* Timing.
........................ B-23
Figure B–9 ZT 8809A Status Timing.
........................... B-24
Figure B–10 ZT 8809A Read Timing.
............................ B-25
Figure B–11 ZT 8809A Write Timing.
........................... B-26
Figure B–12 ZT 8809A Wait Request Timing.
.................... B-27
Figure B–13 ZT 8809A Bus Exchange Timing.
................... B-28
Figure B–14 ZT 8809A Interrupt Timing.
........................ B-29