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- $INCLUDE: 'C:\FG\INTRFACE.FOR'
-
- PROGRAM MAIN
-
- INTEGER*2 OLD_MODE
- INTEGER*2 ACTIVE, VISUAL
- INTEGER*2 PAGE0, PAGE1
- INTEGER*2 STATUS
- INTEGER*2 FG_ALLOCATE, FG_FREEPAGE
- INTEGER*2 FG_GETADDR, FG_GETMODE, FG_GETPAGE, FG_GETVPAGE
-
- OLD_MODE = FG_GETMODE()
- CALL FG_SETMODE(4)
- STATUS = FG_ALLOCATE(1)
- CALL FG_SETPAGE(1)
-
- ACTIVE = FG_GETPAGE()
- VISUAL = FG_GETVPAGE()
-
- CALL FG_SETPAGE(0)
- PAGE0 = FG_GETADDR()
- CALL FG_SETPAGE(1)
- PAGE1 = FG_GETADDR()
-
- STATUS = FG_FREEPAGE(1)
- CALL FG_SETMODE(OLD_MODE)
- CALL FG_RESET
-
- WRITE(6,1000) ACTIVE
- WRITE(6,1010) VISUAL
- WRITE(6,1020) PAGE0
- WRITE(6,1030) PAGE1
-
- STOP ' '
- 1000 FORMAT(' Active page is',I2,'.')
- 1010 FORMAT(' Visual page is',I2,'.')
- 1020 FORMAT(' Page 0 address is ',Z4)
- 1030 FORMAT(' Page 1 address is ',Z4)
- END