February 11, 1992 ------------------------------ Using The CD-ROM ------------------------------ The 1990 Summary Tape File 1A software was developed on a COMPAQ Deskpro 286 with 640K RAM operating under MS-DOS 3.31. The software was compiled with Clipper (Summer '87). There are no special display requirements. For direct access to the data files, one of the many software packages which recognize the dBASE III Plus (.DBF) format will be very useful. Users of other types of systems, such as the Apple Macintosh, have access to the files through support for ISO 9660 CD-ROMs. Please note that the retrieval software will only run on IBM-compatibles operating under MS-DOS. Type GO at the DOS prompt and ENTER. Example: L:\>go To access the Redistricting data: L:\>cd rf L:\RF>go ------------------------------ Contents Of The CD-ROM ------------------------------ Volume in drive is CD90_1A_PR DOCUMENT Directory for documentation files. These are ASCII text files containing the complete technical documentation for the data. RF Directory for 1990 Redistricting data. RF\DOCUMENT Directory for 1990 Redistricting data documentation files. GO.BAT Batch file to execute data retrieval software. STF1APR.EXE Data retrieval software. STF1A Database Files for Puerto Rico Data Tables - see \DOCUMENT files, especially HOWTOUSE.ASC. -------------------------------------------------- STF1A0PR DBF P1 - P6 STF1A1PR DBF P7(pt. 1) - P11A STF1A2PR DBF P12 - P24 STF1A3PR DBF H1 - H21 STF1A4PR DBF H22 - H34 STF1A5PR DBF H35 - H48 Reference Files STF1STRU.DBF This file describes the structure of the first 67 fields in the STF1A0PR segment. These are the identification fields. TABLES.DBF This file describes the numeric data tables. CNAMESPR.DBF This file contains a list of county names and FIPS codes for Puerto Rico. Index Files CNAMESPR.NDX This is a dBASE III index file for CNAMESPR.DBF. Key field is ANPSADPI. STF1AMPR.NDX This is a dBASE III index file for STF1A?PR.DBF. Key fields are SUMLEV + CNTY + COUSUBFP + PLACEFP + TRACTBNA + BLCKGR. STF1APPR.NDX This is a dBASE III index file for STF1A?PR.DBF. Key fields are SUMLEV +PLACEFP. STF1ATPR.NDX This is a dBASE III index file for STF1A?PR.DBF. Key fields are SUMLEV + CNTY + TRACTBNA + BLCKGR. STF1ALPR.NDX This is a dBASE III index file for STF1A?PR.DBF. Key fields are SUMLEV + left(ANPSADPI,1). This index is UNIQUE. TABLES.NDX This is a dBASE III index file for TABLES.DBF. Key fields are TABLE + FIELD. ------------------------------