Regarding the swedish document, let me translate. I'll try my best since I'm norwegian. http://www.stonan.com/dok/PETnyh2_2.pdf page 14: "AT LAST - Now there is SCIP ! ----------------------------- Many have been wondering why we at Datatronic could not deliver any SCIP-interface. It has depended on that the IEEE-bus buffer circuits has been unobtainable. In february, a lot was tracked down in Japan, and the required amount were bought immediately. The shortcoming of these circuits resulted in a more than a doubling of the price. The price of SCIP is thus unchanged. For you who does not know what SCIP is follows here: A PRESENTATION OF SCIP ---------------------- SCIP is a full duplex IEEE <=> RS 232C interface. It consist of a microcomputer that handles all communication and all translation between ASCII and PET-code. SCIP can either give or receive data on a 20 mA current-loop. The internal buffer, which is 50 symbols long, stores incoming data until the PET fetches them. SCIP is used first of all by terminal connections, by printing on RS 232C (V24) -printers, also acquirement of data from measurement instruments. PROGRAMMED DIRECTLY IN BASIC It is very easy to communicate with the SCIP thanks to it working on the IEEE-bus. One opens a file which later is called with usual PRINT#-, GET#- or INPUT#-calls. One can even list a program out through the SCIP with the CMD-command. AUTOMATIC SYMBOL TRANSLATION All discrepancies between standard ASCII and PET-ASCII is eliminated by the SCIP automatically. One can by sending a control symbol to the SCIP select between two different symbol translations, depending on which symbol translation is handled by the PET. PROGRAM CHOICE OF BAUDRATE Transfer speed (baudrate) is selected with secondary address when one opens a file to SCIP. By opening separate files for PRINT#- respectively INPUT#- or GET#- calls one can get different transfer speeds for sending respectively receiving. SCIP works with the following speeds: 50, 75, 110, 150, 300, 600, 1200, 2400 and 4800 baud. PARITY SCIP is generating even or odd parity when sending data, but does not check parity on incoming. WORD LENGTH SCIP works always with 7 bits word length and with ASCII-format, plus one parity bit and a start and one or two stop bits. ADDRESSING SCIP is fully addressable on the IEEE-bus. With two switches (?omkopplare) in the SCIP one sets the address to 4, 5, 6 or 7. SRQ SCIP sets the SRQ-signal active (low) when there is data in the buffer. If the PET does an INPUT#- or GET#- call when the buffer is empty a s.k. timeout error in the PET is generated. By testing the variable ST in the PET one can determine if it was a successful read-in of data. Per Malmberg" bwack -- Sent from: http://cbm-hackers.2304266.n4.nabble.com/Received on 2018-12-31 16:00:07
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