MESA Electronic 4C27 Manual Download Page 8 | Manualshive

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MESA Electronic 4C27 Manual Download Page 8

CONFIGURATION

GENERAL

The 4C27 has two user settable jumpers. One of the jumpers is used to enable or disable the

watchdog, and one is used for disconnecting the lithium cell. When the words "up", and "down" are
used it is assumed that the 4C27 CPU card is oriented with its bus connectors J1 and J2 at the bottom
edge of the card (nearest the person doing the configuration).

DEFAULT JUMPER SETTINGS

Factory default 4C27 jumpering is as follows:

FUNCTION

JUMPER

SETTING

Lithium cell connect

W1

UP - Clock enabled

WatchDog enable

W5

UP - Watchdog enabled

Page 8

4C27 CPU USER'S MANUAL

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Summary of Contents for 4C27

Page 1: ...reserved This document and the data disclosed herein is not to be reproduced used disclosed in whole or in part to anyone without the written permission of MESA ELECTRONICS Mesa Electronics 4175 Lake...

Page 2: ......

Page 3: ...or 11 Keyboard connector 11 Serialport connectors 12 Parallelport connector 13 Floppyconnector 15 IDE connector 15 Ethernet connector 15 CPU OPERATION Power consumption 16 Startup errors 16 Watchdog t...

Page 4: ...25 REMDISKand REMSERVE 25 DISK EMULATOR OPERATION General 26 Reliability 26 Disk emulator initialization 27 INSTALLATION General 28 I O connector orientation 28 REFERENCE INFORMATION Specifications 2...

Page 5: ...4C27 CPU USER S MANUAL...

Page 6: ...und equipment into which4C27 willbe installed D Ground handling personnelwith conductive bracelet through 1 megohmresistor to ground E Avoid wearing synthetic fabrics particularlyNylon LITHIUM CELL Th...

Page 7: ...allow field upgrades without physicalaccess to the 4C27 card The BIOS can be configured to skip various device probes at startup allowing a fast boot up inembedded applications Datalight ROM DOS is av...

Page 8: ...words up and down are used it is assumed that the 4C27 CPU card is oriented with its bus connectors J1 and J2 at the bottom edge ofthe card nearest the persondoing the configuration DEFAULT JUMPER SET...

Page 9: ...CONFIGURATION DEFAULT JUMPER SETTINGS AND CONNECTOR LOCATIONS Page 9 4C27 CPU USER S MANUAL...

Page 10: ...ped with the cell disconnected so you may need to move W5 to the up position in order to usethe batterybacked clock calendar The 4C27 BIOS does not use the CMOS setup RAM so it is possible to run the...

Page 11: ...ows PIN SIGNAL CURRENT RATING 1 5V 1A 2 GND 1A 3 GND 1A 4 5V 1A The current ratings above meanthat the total 5V current needs to be limited to 2A KEYBOARD CONNECTOR P5 is the AT keyboard reset in and...

Page 12: ...3 second wait for keyboard response to the reset command SERIAL PORT CONNECTOR P2 and P4 are the serial port connectors P2 and P4 are 10 pin dual row 1 headers The suggested mating connector is AMP P...

Page 13: ...nal ground 10 NC 5V 5V user power or key PARALLEL PORT CONNECTOR The 4C27 parallel port connector is P7 The connector for the parallel port uses a 26 pin 2mm header to save space The 26 pin connector...

Page 14: ...t printer out 7 4 PD2 Data 2 8 17 PSLIN Select printer out 9 5 PD3 Data 3 10 18 GND Ground 11 6 PD4 Data 4 12 19 GND Ground 13 7 PD5 Data 5 14 20 GND Ground 15 8 PD6 Data 6 16 21 GND Ground 17 9 PD7 D...

Page 15: ...CC 5V power 11 FWDATA Write data 12 GND Power ground 13 FWGATE Write gate 14 FTRK0 Track 0 detect 15 FWRPROT Write protect 16 GND Power ground 17 FRDATA Read data 18 GND Power ground 19 FHDSEL Head se...

Page 16: ...time as the speaker beep The BIOS beep codes are as follows BEEPS ERROR 2 Bad externalROM checksum 3 ExternalROMinitialization error 4 No systemmemoryfound 5 Can t boot no resident language 6 BIOS RO...

Page 17: ...The IDE interface on the 4C27 uses a 44 pin 2mm connector This is compatible with laptop type hard drives 2 5 and smaller The 44 pin connector also supplies power to these drives An adapter is availab...

Page 18: ...d on alabelon the back ofthe 4C27 card REMOTE BOOTING A BIOS with a RPL Novells remote boot protocol Ethernet boot ROM image is included on the distributiondisk as isa BIOS with a genericBOOTP TFTP bo...

Page 19: ...reset For more information on setup options you should list the 4C27 CF file in the UTILS directory of the distribution disk This file has all of the available setup options specified Normal usage of...

Page 20: ...ine of the configuration file consists of a parameter name followed by a parameter value If a parameter name is not specified in the configuration file that parameter willbe set to the default value s...

Page 21: ...228 The COM3 4 ADDRESS parameter allows selection of the locations of serial ports COM3 and COM4 These port addresses will not be used unless the primary or secondary serial port has COM3 or COM4 sel...

Page 22: ...METER VALUES DEFAULT SECSER ADDRESS 2F8 2F8 3F8 COM3 COM4 Sets the address of the secondary serial port The port connected to P3 If set to COM3 or COM4 the addressis determined bytheCOM3 4 ADDRESS par...

Page 23: ...port is a 9 pin male AT pinout type and that the 4C27 has it s serial port adaptor cable the cable would have 9 pin female connectors at bothends and the following connections 9 pin 9 pin 5 5 ground...

Page 24: ...ed when the file transfer is complete BR is an optional baud rate parameter IfBR is not supplied RECV uses 9600 baud For example RECV FOO GOO 38400 Q would get the remote file FOO write it to the loca...

Page 25: ...NCH BAT This is where you would put your normal program launch sequence Note that the default drive is still the ROM drive when LAUNCH BAT is called so the first thing done in LAUNCH BAT should probab...

Page 26: ...it always writes a full sector not just the directory or FAT entry required If the sector write is not completed the sector with the directory or FAT entry that was being written will have an invalid...

Page 27: ...NumberOfChips is1 or 2 On the 4C27 there are 1 or 2 chips If you want to initialize a 2 chip disk emulator the INITRMDBcommand would be INITRMDB C0 N2 T Initialize disk starting at chip 0 using 2 chi...

Page 28: ...port connector can be cut and a keying plug installed in the cable mount header if desired to prevent reverse installation of the serial cables If more positive polarization is desired on the 10 pin...

Page 29: ...ply current sleep mode 125 mA BUS LOADING AND DRIVE Input capacitance 20 pF Input leakage current 5 uA Output drive capability 150 pF Output sink current 6 mA ENVIRONMENTAL Operating temperature range...

Page 30: ...t willbe made without charge If the failure has been caused by misuse neglect accident or abnormal conditions ofoperation repairs willbebilled at anominalcost THE FOREGOING WARRANTY IS IN LIEU OF ALL...

Page 31: ...REFERENCE INFORMATION SCHEMATIC DIAGRAMS Page 31 4C27 CPU USER S MANUAL...

Page 32: ...Page 32 4C27 CPU USER S MANUAL...

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