128 моде бY мARK йORDAN а FEW MONTHS AGO, и WAS ASKED TO JUDGE рун'S WRITING CONTEST. аS A HIGH SCHOOL еNGLISH TEACHER, и THOUGHT IT WOULD BE AN EXCELLENT OPPORTUNITY TO SHOW STUDENTS THE WRITING PROCESS, SO и HAULED MY ц-128 INTO THE CLASSROOM, HOOKED IT UP TO A жцр THAT FED INTO A 27-INCH MONITOR, AND BOOTED UP ONE OF THE CONTEST ENTRIES THAT и CONSIDERED QUITE GOOD. уNFORTUNATELY, и COULDN'T USE MY COMPUTER MONITOR TO READ THE TEXT ALOUD WHILE THE CLASS LOOKED AT THE BIG SCREEN, BECAUSE THE BIG SCREEN HOGGED THE VIDEO. и WAS FORCED TO SIT IN FRONT OF THE BIG SCREEN WITH MY BACK TO THE CLASS WHILE A STUDENT AT THE BLIND COMPUTER PRESSED THE NEXT-SCREEN KEY EVERY TIME и SIGNALED. аNYONE DOING A VIDEO PRESENTATION WANTS A PRIVATE SCREEN SO THEY CAN FACE THEIR AUDIENCE. вITH THE ц-128'S DUAL VIDEO MODES, IT WAS EASY TO CREATE A MACHINE LANGUAGE ROUTINE THAT LET ME USE TWO MONITORS AT ONCE. мY PROGRAM, жиц/ждц, COPIES THE ждц (80-COLUMN) DISPLAY TO THE жиц (40-COLUMN COMPOSITE) DISPLAY, AND VICE VERSA. тHAT WAY, YOU CAN USE THE COMPUTER MONITOR IN ждц MODE AND THE жцр MONITOR IN жиц MODE, WITHOUT BUYING NEW CABLES OR MESSING AROUND WITH WIRES. тHE TWO MODES, HOWEVER, HAVE DIFFERENT SCREEN WIDTHS--80 COLUMNS VERSUS 40 COLUMNS. вITH THIS PROGRAM, YOU CAN USE THE ждц'S DOUBLE-PIXEL MODE TO MAKE THE 80-COLUMN SCREEN LOOK LIKE IT HAS ONLY 40. тHIS ROUTINE WORKS BY ADDING COMMANDS TO THE еSCAPE VOCABULARY AS FOLLOWS: есцапе/таб: цOPY ONE SCREEN TO ANOTHER. есцапе/_ (BACK-ARROW): тOGGLE THE COPY DIRECTION (жиц TO ждц, OR VICE VERSA). есцапе/+ (PLUS SIGN): сET 80-COLUMN MODE TO DOUBLE-WIDTH. оNE NOTE: ыOU DON'T NEED TWO MONITORS HOOKED UP TO TEST THE PROGRAM. йUST PUT YOUR COMPUTER IN слов MODE (TYPE слов AND PRESS RETURN) AND FLIP YOUR DISPLAY BUTTON BACK AND FORTH. тHE PROGRAM RESIDES IN MEMORY LOCATIONS 3072 TO 3487, SO IT ISN'T COMPATIBLE WITH SOFTWARE THAT USES THAT AREA. иT RUNS IN дIRECT MODE AND CAN BE INCORPORATED INTO ANY SOFTWARE YOU WRITE. тO GET STARTED, COPY BOTH THE MACHINE LANGUAGE FILE жиц/ждц AND THE бASIC LOADER жиц/ждц маин TO A WORK DISK USING рEрун'S MENU. иF YOU WISH TO MAKE ADDITIONAL COPIES OF THE PROGRAM, SIMPLY RUN THE бASIC LOADER. тO USE THE PROGRAM, LOAD THE MACHINE LANGUAGE FILE WITH THE COMMAND блоад "жиц/ждц". тHEN CALL IT BY TYPING сыс 3328. аNYTIME YOU HIT RUN-STOP/RESTORE, YOU'LL NEED TO ENTER THE сыс AGAIN.