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HELP.DOC
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1984-04-29
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Getting Started for the STAGE2 Novice
3/20/81
Step 1. Print the following files:
HELP.DOC
USE.DOC
INTRO.DOC
DEMO.S2M
Step 2. Read through INTRO.DOC but do not get bogged down in trying to under-
stand it. The idea on this first pass is to become a little familiar
with what is there.
Step 3. Run STAGE2 using DEMO.S2M for input.
A>STAGE2 DEMO.S2M ; make sure printer is on
or
A>STAGE2 CON:,CON:=DEMO.S2M ; if you do not have a printer
STAGE2 error messages go to channel 4 which is defaulted to
the list device if nothing is specified on the command line.
Step 4. Type the following examples and carefully observe the results. Go
through all of the examples once to become familiar with them but do
not try to understand what is going on. Then start over and do each
example while referring to the listings DEMO.S2M and INTRO.DOC in an
effort to understand the operations being performed. Don't get dis-
couraged as it may not make sense at first. Perseverance is in order.
HELP
C0 ABC ; simple copy
C1 ABC ; symbol undefined in memory
F3 ABC=XYZ ; defines symbol in memory
C1 ABC ; symbol now defined -
; note difference from previous C1
F3 ABC=IJK ; new value for ABC in memory
C1 ABC
S ; next symbol from generator
S
S
C2 ABC ; similar to C1 except if symbol is not
; defined it will be given the next
; value from the symbol generator
C2 PDQ
S
C2 PDQ
C4 2+3*(4-7/3) ; expression evaluation
C4 PDQ-6 ; will use value of PDQ from memory
C4 XXX+3 ; XXX is undefined so value is 0
C4 ABC+3 ; causes error message to channel 4
; because ABC has non-numeric value
; in memory
C5 ABCDEFGHIJK ; length of string
C6 MAGIC ; parameter redefinition
C7 ONE,TWO;THREE ; scanner operation
C8 A
C8 B ; internal code for character
F1 ; output request
F7 2+3 ; count controlled iteration
F7 PDQ
FE ; error trace back
F0 ; terminates - WARM BOOT