FILE: PS8DPT.DA PT08/DATAPOINT PS/8 BUILD PROGRAMS ---------------------------------- PETER LEMKIN NATIONAL INSTITUTES OF HEALTH BETHESDA, MD 20014 DECEMBER 5, 1972 ABSTRACT ---------- FIVE CORE IMAGES MODIFIED FROM THE ORIGIONAL VERSION OF (NOVEMBER 1969) PS/8 SOFTWARE LET THE USER BUILD AND RUN A PS/8 SYSTEM WITH A PT08 AS THE SYSTEM TELETYPE. USED AT 1200 OR 2400 BAUD WITH A DATAPOINT OR SIMILAR TERMINAL, PS/8 CAN BE RUN WITH A MUCH GREATER THROUGHPUT. **PAGE INTRODUCTION ------------ THE FIVE CORE IMAGES ARE PS8DPT.SV, CDDPT.SV, CLUDGE.SV, PIPT08.SV, AND PT08ED.SV. THESE CORE IMAGES HAVE BEEN GENERATED BY REPLACING ALL TELETYPE DEVICE CODES (03/04) WITH THOSE FOR A PT08 (40/41). IN ADDITION, THE NORMAL HLT'S IN PS8.BN AND CD.BN WERE REPLACED BY "JMP 7600"'S. THIS ALLOWS THE USER TO REBUILD THE SYSTEM FROM A TELETYPE OR DATAPOINT WITHOUT TOUCHING THE PDP8 SWITCHES. THE DIRECT SWITCH IN PS8.BN WAS SET SO THAT THE SYSTEM DIRECTORY IS NOT DESTROYED IN REBUILDING THE SYSTEM. THE CORE IMAGE PS8DPT.SV CONTAINS PS8.BN (MODIFIED) AND CONFIG.BN FOR THE FOLLOWING CONFIGURATION: 4 PLATTER RF08/RS08 (SYS: DSK:) LOW SPEED PTR:/PTP: (I.E. ASR 33 TELETYPE) LINC8 SIMULATED DECTAPES UNITS O AND 1 CALLED DTA0:, DTA1: LP08 LINEPRINTER LPT: IT IS SIMPLE TO CHANGE THE SYSTEM CONFIGURATION BY CREATING A NEW PS8DPT.SV CORE IMAGE WITH THE NEW CONFIG.BN AS FOLLOWS. 1. EDIT AND ASSEMBLE THE NEW CONFIG.BN. 2. .R ABSLDR *PS8DPT.SV/I - BRING IN THE OLD (PT08 VERSION) IMAGE *CONFIG.BN - OVERLAY WITH THE NEW CONFIG.BN *$ .SAVE SYS PS8DPT.SV - SAVE THE NEW PT08/DATAPOINT PS8 BUILD. CDDPT.SV CONTAINS THE MODIFIED COMMAND DECODER CD.BN SUCH THAT BOTH THE COMMAND DECODER AND ODT WORK FROM THE DATAPOINT. ANOTHER FILE, CLUDGE.SV, PUTS THE DEVICE HANDLERS FOR JOHN ALDERMAN'S DEVICE LINK: (PT08) AND AN AB DICK 960 VIDEOJET LINEPRINTER (LPT:) ON THE SYSTEM DEVICE. NOTE THAT THE LP08 IS REPLACED WITH THE VIDEOJET PRINTER. THE VIDEOJET INTERFACE IS MADE BY ECLECTIC COMPUTER CORP, DALLAS, TEXAS. MODIFICATIONS TO PIP AND EDIT ----------------------------- PIP.SV AND EDIT.SV HAVE BEEN PATCHED SO THAT ALL ERROR MESSAGES AND INTERACTION OCCUR THROUGH THE PT08. THE PATCHED VERSION OF PIP IS CALLED PIPT08.SV. THE EDITOR HAS SEVERAL ADDITIONAL MODIFCATIONS. THE ALTMODE WAS REPLACED WITH AN ESCAPE SINCE THAT IS THE KEY ON THE DATAPOINT. FUTHERMORE, A PATCH WAS INSERTED TO FORCE THE PARITY BIT ON SINCE THE DATAPOINT TERMINAL GENERATES A PARITY BIT AND EDIT.SV ASSUMES THAT IT DOES NOT. THE MODIFIED EDIT IS CALLED PT08ED.SV. BUILDING A PS/8 / DATAPOINT SYSTEM ------------------------------------ UNDER THE OLD PS/8 OR OS/8, RUN THE FOLLOWING PROGRAMS IN THIS ORDER. 1. .R PS8DPT.SV -(INITIALLY FROM THE ASR33) . - NOW CONTROL IS ON THE PT08. 2. .R CDDPT.SV -(COMMAND DECODER IS ON THE PT08) . 3. IF THE LINK: AND AB DICK LPT: ARE DESIRED, THEN: .R CLUDGE.SV . IN EITHER CASE, THE SYSTEM IS NOW BUILT AND CONTROL IS NOW FROM THE PT08/DATAPOINT. USE PIPT08.SV AND PT08ED.SV JUST AS YOU WOULD PIP.SV AND EDIT.SV EXCEPT THAT THESE WORK FROM THE PT08. -----