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AC37 High-Speed Communication Adapter Card

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WELCOME

ABOUT THIS MANUAL

This manual is organized as follows:

Chapter 1: AC37: IBM AT to Remote Bus Adapter Card

Chapter 2: Register Definition

Chapter 3: External Interrupt Line, Remote I/O IRQ

Chapter 4: Mode of Operation

DOCUMENT CONVENTIONS

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lower case. (Example: “At the DOS prompt, type 

cd \windows

.”)

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 typeface indicates emphasis and is used for book titles. (Example: “See the 

OptoControl User’s Guide

for details.”)

File names appear in all capital letters. (Example: “Open the file TEST1.TXT.”)

Key names appear in small capital letters. (Example: “Press 

SHIFT

.”)

Key press combinations are indicated by plus signs between two or more key names. For example, 

SHIFT

+

F

1

is the result of holding down the 

SHIFT

 key, then pressing and releasing the 

F

1 key. Similarly, 

CTRL

+

ALT

+

DELETE

 is

the result of pressing and holding the 

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ALT

 keys, then pressing and releasing the 

DELETE

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Menu commands are sometimes referred to with the Menu

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Command convention. For example, “Select

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Run” means to select the Run command from the File menu.

Numbered lists indicate procedures to be followed sequentially. Bulleted lists (such as this one) provide
general information.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Summary of Contents for AC37

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Page 3: ...r to Opto 22 form number 1042 for complete warranty information Opto 22 FactoryFloor Cyrano Optomux and Pamux are registered trademarks of Opto 22 Generation 4 ioControl ioDisplay ioManager ioProject...

Page 4: ...R REGISTER OFFSET 0 READ ONLY 2 1 CARD IDENTIFICATION REGISTER OFFSET 7 READ ONLY 2 1 BAUD RATE SELECT REGISTER OFFSET 0 READ WRITE 2 2 INTERRUPT ENABLE REGISTER OFFSET 1 READ WRITE 2 3 INTERRUPT IDEN...

Page 5: ...AC37 High Speed Communication Adapter Card TABLE OF CONTENTS iv Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 6: ...e OpenthefileTEST1 TXT Keynamesappearinsmallcapitalletters Example PressSHIFT Keypresscombinationsareindicatedbyplussignsbetweentwoormorekeynames Forexample SHIFT F1 istheresultofholdingdowntheSHIFT k...

Page 7: ...AC37 High Speed Communication Adapter Card WELCOME vi Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 8: ...functions of the 16 550 are supported e g modem control all registers necessaryforRemoteBuscommunicationsareconfiguredinthesamemannerasaserialport SUMMARY OF FEATURES Seriallinkbaudratesto460 800 Remo...

Page 9: ...ress lines of the AT match the jumper settings the card is selected The base address must be less than 3FF Hex and have a zero or eight as the last digit Care should be taken to select a base address...

Page 10: ...icationRegistercanberoutedtooneinterruptrequestlinebyinstalling thejumperforthatline Onlyonejumpershouldbeinstalledinthisgroup andcareshouldbetakentoinsurethat nootherdeviceisusingtheselectedinterrupt...

Page 11: ...ENDSofanRS 485transmissionline andthelinemust haveonlyTWOends Thebiasingresistorsareonlynecessaryatoneplaceonthelineandaretypicallyinstalledat thehost EXAMPLES IftheAC37iscommunicatingtoaMisticModel20...

Page 12: ...Screw AC37 retainer bracket to case 4 Replace computer cover CABLE RS 485 serial lines require twisted pair cable Maximum cable length is 3 000 feet The recommended cable type is 2 twisted pair of 24...

Page 13: ...OMport 16 550UART emulationmode0 Mode1isusedwhenacompletedataresponseisreceivedand readyinthecommunicationbuffer Remove jumper 0 to set the AC37 to mode 0 for connections to Mistic I O bricks If you a...

Page 14: ...ER OFFSET 7 READ ONLY Thisregisterwillalwaysreadas37Hex whichmaybeusedbysoftwaretoidentifytheportasanAC37 Writingto thisaddresswillhavenoeffect Offset from Base Address DLAB State Register Function Ty...

Page 15: ...toa1beforethisregistercanbeaccessed IftheBaud Rate Select Register is configured to something other than the selections shown below a default baud rate of 115 200willbeset Desired Baud Rate Baud Rate...

Page 16: ...c 1 a transmit buffer empty interrupt is generated whenever the transmit FIFO is ready to accept data Refer to the description of the Transmit Buffer Empty flag bit 5 in the Line Status Register Bit 2...

Page 17: ...Refer to the Line Status Register definition for a description of these errors A Line Status Interrupt is cleared by reading the Line Status Register AReceiveDataAvailableInterruptisgeneratedwhenevert...

Page 18: ...pointers reset to 0 Data being shifted out of the transmitter is not affected This bit is self clearing and it is not necessary to write a logic 0 afterward Bit 3 Not Used Bit 4 CPU Reset To reset the...

Page 19: ...ll be interpreted as an address byte by the Remote I O Conversely if bit 4 is set to a logic 1 the 9th bit of data written to the transmit FIFO will be set to a logic 0 when transmitted and interprete...

Page 20: ...eld anolderfull lengthcardandanewerhalf sizecard Thenewer cardsupportstheuseofthisbittoenableinterrupts TheolderAC37doesnotsupporttheuseofthisbit however werecommendthatthebitstillbesettoensurecompati...

Page 21: ...g data is lost The receive FIFO is 512 bytes deep The Overrun Error Indicator is reset to a logic 0 when the Line Status Register is read Bit 2 Not Used This bit is not used and will always read as a...

Page 22: ...e is being driven to the active state by a device other than the AC37 Bit 4 functions identically to bit 0 Bit 4 is the CTS status bit in a 16 550 UART chip Bit 5 Address Data Receive Flag When the AC...

Page 23: ...AC37 High Speed Communication Adapter Card 2 10 REGISTER DEFINITION Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 24: ...ectorsandroutines fortheserialcommunicationsandexternalinterrupthandling TheG4INTjumperwill directly route the external interrupt signal to the selected interrupt request line and it may only be enabl...

Page 25: ...AC37 High Speed Communication Adapter Card EXTERNAL INTERRUPT LINE REMOTE I O IRQ 3 2 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 26: ...which is being used ASCII Protocol The AC37 will send and receive data much the same way as it does in mode 0 except that after transmitting a carriage return the ASCII protocol end of message charac...

Page 27: ...eReceiveDataAvailableflaguntiltheentireresponseisreceived Ifareceiveerroroccurs or twosecondsexpirewithnodatahavingbeenreceived theReceiveDataAvailableflagisallowedtooperateinit s normalmanner Mode 2...

Page 28: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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