80C186EC/80C188EC Microprocessor User's Manual

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SERIAL COMMUNICATIONS UNIT MASTER 186 Core Device TXD RXD Master Transmit Line Master Receive Line TXD RXD TXD RXD TXD RXD Port Pin 80C51 Port Pin 80C196 Port Pin 186 Core Device SLAVES A1273-0A Figure 11-18. Master/Slave Example Example 11-3 demonstrates how to implement a master/slave network in a typical system. The remaining three examples show the routines used in the implementation. Example 11-4 is a master routine that addresses a slave and waits for it to respond. Example 11-5 is a slave routine that responds to commands sent by the master. Equation 11-6 is the master routine that sends commands to the slave. 11-25
SERIAL COMMUNICATIONS UNIT $mod186 name example_master_slave ;******************************************************************* ; FUNCTION: This function demonstrates how to implement the three ; master/slave routines (_slave_1, _select_slave, and _send_slave_command) ; in a typical setup. ; ; NOTE: It is assumed that the network is set up as shown in ; Figure 11-18, that the slave unit is running the ; _slave_1 code, and that the PCB is located in I/O space. ; ;******************************************************************* Slave1 equ 01h ;address assigned to slave unit 1 Flash equ 01h ;command to flash EVAL board LEDs Disc equ 0fh ;command to disconnect from network False equ 00h lib_80186 extrn extrn lib_80186 code segment public 'code' ;declare external routines _select_slave:far _send_slave_cmd:far ends segment public 'code' assume cs:code public _main _main proc near push Slave1 ;get slave unit 1 address ;send the address over the network call far ptr _select_slave add sp, 2 ;adjust sp cmp ax, false ;was slave 1 properly selected je SlaveExit ;no: then exit push Flash ;yes: then send Flash command ;send it call far ptr _send_slave_cmd add sp, 2 ;adjust sp ;insert a delay routine to allow completion of last command ;send it SlaveExit: _main code push Disc ;prepare to disconnect slave call far ptr _send_slave_cmd add sp, 2 ;adjust sp ret endp ends end _main Example 11-3. Master/Slave — Implementing the Master/Slave Routines 11-26
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80C186EC/80C188EC Microprocessor Us
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Information in this document is pro
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CONTENTS 2.3 INTERRUPTS AND EXCEPTI
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CONTENTS 6.4 PROGRAMMING...........
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CONTENTS CHAPTER 9 TIMER/COUNTER UN
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CONTENTS 11.4 SERIAL COMMUNICATIONS
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CONTENTS FIGURES Figure Page 2-1 Si
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CONTENTS FIGURES Figure Page 6-6 ST
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CONTENTS FIGURES Figure Page 11-18
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CONTENTS Table TABLES Page C-1 Inst
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Introduction 1
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INTRODUCTION The 80C186 Modular Cor
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INTRODUCTION Table 1-2. Related Doc
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INTRODUCTION 1.3.2.1 How to Find Ap
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Overview of the 80C186 Family Archi
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OVERVIEW OF THE 80C186 FAMILY ARCHI
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Bus Interface Unit 3
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BUS INTERFACE UNIT Physical Impleme
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BUS INTERFACE UNIT (X + 1) (X) A19:
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BUS INTERFACE UNIT For word transfe
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BUS INTERFACE UNIT CLKOUT T4 T1 T2
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BUS INTERFACE UNIT CLKOUT T4 or TI
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BUS INTERFACE UNIT Signals From CPU
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BUS INTERFACE UNIT T2 T3 or TW T4 o
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BUS INTERFACE UNIT A normally not-r
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BUS INTERFACE UNIT T2 or T3 or TW T
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BUS INTERFACE UNIT An idle bus stat
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BUS INTERFACE UNIT T1 T2 T3 T4 CLKO
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BUS INTERFACE UNIT T1 T2 T3 T4 CLKO
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BUS INTERFACE UNIT The minimum devi
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BUS INTERFACE UNIT Figure 3-24 show
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BUS INTERFACE UNIT After several TI
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BUS INTERFACE UNIT 3.5.5 Temporaril
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BUS INTERFACE UNIT CLKOUT ALE T4 T1
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BUS INTERFACE UNIT CLKOUT NMI/NTx N
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BUS INTERFACE UNIT ALE Processor A1
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BUS INTERFACE UNIT The WAIT instruc
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BUS INTERFACE UNIT CLKOUT HOLD 1 2
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BUS INTERFACE UNIT CLKOUT 1 3 4 HOL
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BUS INTERFACE UNIT CLKOUT HOLD 1 2
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Peripheral Control Block 4
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PERIPHERAL CONTROL BLOCK Register N
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PERIPHERAL CONTROL BLOCK 4.3 RESERV
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PERIPHERAL CONTROL BLOCK 4.4.3.1 Wr
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Clock Generation and Power Manageme
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CLOCK GENERATION AND POWER MANAGEME
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CHAPTER 6 CHIP-SELECT UNIT Every sy
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CHIP-SELECT UNIT Stop Value Ignore
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CHIP-SELECT UNIT Address 1 Ready Fl
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CHIP-SELECT UNIT Register Name: Reg
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CHIP-SELECT UNIT Register Name: Reg
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CHIP-SELECT UNIT In the previous eq
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CHIP-SELECT UNIT No Any READY = 1 W
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CHIP-SELECT UNIT The GCS chip-selec
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CHIP-SELECT UNIT $ TITLE (Chip-Sele
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CHIP-SELECT UNIT ;SET UP CHIP SELEC
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Refresh Control Unit 7
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REFRESH CONTROL UNIT 7.1 THE ROLE O
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REFRESH CONTROL UNIT The BIU does n
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REFRESH CONTROL UNIT CLKOUT T4 T1 T
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REFRESH CONTROL UNIT 7.7.2.1 Refres
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REFRESH CONTROL UNIT Register Name:
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REFRESH CONTROL UNIT $mod186 name e
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REFRESH CONTROL UNIT T1 T1 T1 T1 T1
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CHAPTER 8 INTERRUPT CONTROL UNIT Th
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INTERRUPT CONTROL UNIT Polling requ
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INTERRUPT CONTROL UNIT INT INTA D7:
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INTERRUPT CONTROL UNIT Edge Sense L
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INTERRUPT CONTROL UNIT 8.3.2 Interr
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INTERRUPT CONTROL UNIT 8.3.3.1 Defa
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INTERRUPT CONTROL UNIT More than on
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INTERRUPT CONTROL UNIT IR0 IR1 IR2
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INTERRUPT CONTROL UNIT 10. On the s
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INTERRUPT CONTROL UNIT 8.3.7 Altern
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INTERRUPT CONTROL UNIT 8.4.2 Progra
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INTERRUPT CONTROL UNIT Begin Initia
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INTERRUPT CONTROL UNIT 8.4.3.3 ICW2
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INTERRUPT CONTROL UNIT Register Nam
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INTERRUPT CONTROL UNIT Table 8-2. O
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INTERRUPT CONTROL UNIT The ESMM (En
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INTERRUPT CONTROL UNIT Internal Int
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INTERRUPT CONTROL UNIT To Slave 825
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INTERRUPT CONTROL UNIT 8.6.1 Interr
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INTERRUPT CONTROL UNIT CPU WR RD GC
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INTERRUPT CONTROL UNIT Non-Alike Ac
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INTERRUPT CONTROL UNIT ;Now start t
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INTERRUPT CONTROL UNIT ;The followi
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CHAPTER 9 TIMER/COUNTER UNIT The Ti
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TIMER/COUNTER UNIT Timer 0 Timer 1
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TIMER/COUNTER UNIT Continued From "
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TIMER/COUNTER UNIT Register Name: R
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TIMER/COUNTER UNIT The timer counti
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TIMER/COUNTER UNIT Timer 0 Serviced
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TIMER/COUNTER UNIT 9.3.2 Synchroniz
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TIMER/COUNTER UNIT lib_80186 segmen
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TIMER/COUNTER UNIT $mod186 name exa
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TIMER/COUNTER UNIT _CMPB equ word p
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CHAPTER 10 DIRECT MEMORY ACCESS UNI
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DIRECT MEMORY ACCESS UNIT 10.1.1.1
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DIRECT MEMORY ACCESS UNIT The Chip-
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DIRECT MEMORY ACCESS UNIT Both Requ
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Page 304 and 305: DIRECT MEMORY ACCESS UNIT Channel a
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Page 316 and 317: DIRECT MEMORY ACCESS UNIT 10.2.4 Su
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Page 320 and 321: DIRECT MEMORY ACCESS UNIT $MOD186 n
Page 322 and 323: DIRECT MEMORY ACCESS UNIT SECTORS M
Page 324 and 325: DIRECT MEMORY ACCESS UNIT XOR AX, A
Page 326 and 327: DIRECT MEMORY ACCESS UNIT $mod186 n
Page 328: Serial Communications Unit 11
Page 331 and 332: SERIAL COMMUNICATIONS UNIT 1 2 3 4
Page 333 and 334: SERIAL COMMUNICATIONS UNIT The RX m
Page 335 and 336: SERIAL COMMUNICATIONS UNIT The Tran
Page 337 and 338: SERIAL COMMUNICATIONS UNIT 5. At th
Page 339 and 340: SERIAL COMMUNICATIONS UNIT Register
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Page 343 and 344: SERIAL COMMUNICATIONS UNIT 3. If th
Page 345 and 346: SERIAL COMMUNICATIONS UNIT The seri
Page 347 and 348: SERIAL COMMUNICATIONS UNIT 11.2.3 P
Page 349 and 350: SERIAL COMMUNICATIONS UNIT BCLK is
Page 351 and 352: SERIAL COMMUNICATIONS UNIT $mod186
Page 353: SERIAL COMMUNICATIONS UNIT mov dx,
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Page 359 and 360: SERIAL COMMUNICATIONS UNIT Disconne
Page 361 and 362: SERIAL COMMUNICATIONS UNIT $mod186
Page 364 and 365: CHAPTER 12 WATCHDOG TIMER UNIT Syst
Page 366 and 367: WATCHDOG TIMER UNIT Figure 12-3(b)
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Page 370 and 371: WATCHDOG TIMER UNIT A LOCKed instru
Page 372 and 373: WATCHDOG TIMER UNIT Register Name:
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Page 376: WATCHDOG TIMER UNIT wdt_data segmen
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Page 382 and 383: INPUT/OUTPUT PORTS 13.1.2 Output Po
Page 384 and 385: INPUT/OUTPUT PORTS From Port Direct
Page 386 and 387: INPUT/OUTPUT PORTS 13.1.4.3 Port 3
Page 388 and 389: INPUT/OUTPUT PORTS Register Name: R
Page 390 and 391: INPUT/OUTPUT PORTS Register Name: R
Page 392: Math Coprocessing 14
Page 395 and 396: MATH COPROCESSING 14.3 THE 80C187 M
Page 397 and 398: MATH COPROCESSING Available data ty
Page 399 and 400: MATH COPROCESSING 14.3.1.5 Constant
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MATH COPROCESSING External Oscillat
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MATH COPROCESSING 80C186 Modular Co
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MATH COPROCESSING $mod186 $modc187
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CHAPTER 15 ONCE MODE ONCE (pronounc
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APPENDIX A 80C186 INSTRUCTION SET A
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80C186 INSTRUCTION SET ADDITIONS AN
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Input Synchronization B
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INPUT SYNCHRONIZATION A synchroniza
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APPENDIX C INSTRUCTION SET DESCRIPT
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INSTRUCTION SET DESCRIPTIONS Table
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INSTRUCTION SET DESCRIPTIONS NEG NO
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INSTRUCTION SET DESCRIPTIONS SHR ST
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APPENDIX D INSTRUCTION SET OPCODES
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INSTRUCTION SET OPCODES AND CLOCK C
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Index
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INDEX AH register, 2-5 AL register,
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INDEX synchronization, 10-23 transf
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INDEX NMI, 2-42 generating with WDT
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INDEX bus latency, 7-7 calculating
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INDEX Trap exceptions, 2-42 Trap Fl
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80C186EC/80C188EC Microprocessor User's Manual

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