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Commodore CBM8010 Operator's Manual

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Commodore CBM8010 User Manual
Commodore CBM8010 User Guide
Commodore CBM8010 Online Manual

Text of Commodore CBM8010 User Guide:

  • Commodore CBM8010, CBM 8010 MODEM MANUAL INTRODUCTION We sincerely appreciate your selection of Commodore's acoustically coupled originate and answer IEEE 488 compatible 8010 modem. The CBM 8010 is compatible with the Bell 103 and 113 modems for use in the United States and with V.21 specifications for use in CCITT countries. In addition to being compatible with the IEEE 488 interface, it also conforms to the International Electro-technical Committee (lEC) specifications for programmable instrumentation. INSPECTION AND INSTALLATION Your new CBM 8010 was origi

  • Commodore CBM8010, In the normal mode of operation, full duplex is selected and the FD. TST.HD switch should be switched to the FD position. The full duplex mode allows data to be transmitted simultaneously with the receipt of data from the remote modem. To activate the self-test mode to verify that the coupler and terminal are functioning properly, the FD. TST.HD switch should be switched to the TST position (see "TROUBLESHOOTING"). INDICATORS TST TST indicates that the CBM8010 is operating in the self-test mode. CRX CRX indicates that the carrier from the remote modem has been received and the CBM8010 is ready for teleprocessing. RCV RCV indicates that data is being received. RCV is on

  • Commodore CBM8010, Interface for processing and displayed as received characters. This is useful to assure that data is accurately processed through the interface. 4. Determine that the remote modem is operating in the ANswer mode. If it is not, switch the 8010 to the ANswer mode and proceed with instructions under "ANSWER MODE. " 5. Dial the remote number and wait for a high pitched tone. 6. After hearing the answering tone, place handset firmly in the acoustic cups with the handset cord lying over the word "CORD" on the rear cup. When the XMT indicator goes out and the CRX indicator turns o

  • Commodore CBM8010, THE CBM8010/PET OPERATION This is a functicaial description of the CBM 8010 modem. This modem can be connected to computers that utilize the fully implemented IEEE 488 interface. The interface is compatible with the lEC bus system defined in detail by lEC document 66C022. This interface bus is an international standard with a stringently designed set of interface lines and termination requirements. The IEEE 488 interface in the 8010 modem complies with this international specification including all of the terminations of control and data signals. In addition, the modem has the standard 45 milliamp drive capability required

  • 10 0PEN4,5 22) GET#4,A$:IFST<>0THEN GOTO20 30 Figure 2. Sample of Program to Input Data from the CBM 8010 This programming example shows how a modem may be accessed from the PET to read an input character. The short program shown operates as follows: Statement 10 opens a file numbered 4 in the PET computer. This file is further defined in that it is gomg to talk to a device

  • Commodore CBM8010, SRQ 1 r-OE -FE CF - CARRIER DETECT (CRX) 1 T t 08 D7 D6 D5 D4 D3 02 01 Figure 3. Format for the Service Request Control Character shown in Figure 3. This status word indicates the status of the modem at the time of the serial poll. In particular, bit D7, as called out in the IEEE 488 specification indicates that this was the device requesting service (RQS). Therefore, this bit will be a 1 if the modem was the device requesting the service from the IEEE bus. In addition V the actual modem status is also returned to the controller with bit Dl indicating the CF function of the modem; bit D2 advises that an improper ASCII character

  • Commodore CBM8010, (or 300 baud) using BASIC language instructions with the programs previously shown. If it is not possible to dedicate the controller to inputting from the modem, it is recommended that the service request (SRQ) function be implemented using an assembly or machine language subroutine. APPLICATIONS For PET-to-PET telecommunications, the following program may be used at each terminal: 5 PRINT"THIS PROGRAM FOR PET- COMMUNICATION" TO-PET 10 D=5:0PEN D.D 20 C$=CHR$(13) 30 GET#D.A$:IF ST<>0 THEN 100 40 A=ASC(A$) AND 127 50 IF A>96 THEN A=A AND 223 60 IF A=34 THEN A=39 70 PRINT"Cl"CHR$(A)"a"; 80 IF A$=

  • Commodore CBM8010, TROUBLESHOOTING If communication cannot be established or transmission is garbled, the following tests will help to determine at what point the malfunction is occurring. TEST #1 1. Switch the CBM 8010 to the Half Duplex mode and use the following test program to verify that the interface to the PET from the CBM 8010 is functioning properly. 5 REM LDS-B 110 0PEN4,5 115 GET#4,A$ 120 PRINT"Q" 130 F0RI=1T0255 140 PRINT"0"I 150 PRINT#4,CHR$(I); 160 GET#4,A$ 170 IFST=2THEN PRINT&qu

  • Commodore CBM8010, mode. If the data is garbled, the acoustic coupling portion of the modem is possibly inoperative. If the test is correct and the number 255 is reached and TEST COMPLETE is indicated, skip to TEST #4. 7. If the message is garbled or if the CRX indicator did not come on when the handset was placed in the cups, the carbon granules in the mouthpiece microphone may be compacted. This problem is likely to occur if transmission has been underway for several hours without the presence of a modulated carrier. 8. Tap the handset sharply with your hand or a book. If the carbon granules are simply compacted, this will un

  • Commodore CBM8010, PIN CONNECTIONS Amp - 552791-1 P{n# Signal Lme Signal Definition 1 DIOl — ~ " ' • . - "^ Parallel Data Bit 1 2 DI02 Parallel Data Bit 2 3 DI03 Parallel Data Bit 3 4 DI04 Parallel Data Bit 4 5 EOI End of Output/Identify 6 DAV Data Available 7 NRFD Not Ready for Data 8 NDAC Not Data Accepted 9 IFC Interface Clear 10 SRQ Service Requested 11 ATN Attention 12 Frame Ground 13 DI05 Parallel Data Bit 5 14 DI06 Parallel Data Bit 6 15 DI07 Parallel Data Bit 7 16 DI08 Parallel Data Bit 8 17 REN Remote Enable 18,19,20 Shield Ground 21,22,23 24 SPECIFICATIONS/IEEE The CBM 8010 modem confor

  • SPECIFICATIONS/MODEM Data Rate 300 baud (30 characters per second - 10 bit ASCII compatible) C ompatibility Bell 103 and 113; CCITT V. 21 Transmit Frequencies US - Originate - 1070 Hz/Space, 1270 Hz/Mark; Answer - 2025 Hz/Space, 2225 Hz/Mark. CCITT - Originate - 980 Hz/Mark, 1180 Hz/Space; Answer - 1650 HzAlark, 1850 Hz/Space. Receive Frequencies US - Origina

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