,,'''- - J ,', . ,r .. t TEST ASSEMBLE Al -F 80 (1) AlT=14 RECDS 21
== .. ) UP 5
PROGRAM START 0 BEGIN CONTROL SECTION /== .. / USING PROGRAM,RI5 *===* STM RI4,R12,ZERO(R13) *===*
LA R13,OURSAVE *=:=* XR R2,R2 *===* XR R6,R6 *===*
R3,=F'lO' *===*
0 R2,=F'5' *===*
M R2,=F'IO' *===*
LR R15,R2 ST R15,Rl*FOUR(R13) *===*
L R5,=F'lOO' *===*
XR R4,R4 *===*
0 R4,=F'30' *===* STM R4,R5,R2*FOUR(R13) *===* XC R6*FOUR(FOUR,R13) ,R6*FOUR *== .. *
lM R14,R12,ZERO(R13) *===* SlR R15,R15 *===* BR RI4 *===* OURSAVE OS 90 *== .. *
END
* * * END-OF-FIlE * * *
Figure 3. Sample screen with one logical display
System Overview 10
The basic screen contains a system information area on line 1. Lines 2 .
through 24 are used for a series of one or more "logical displays". The
number of "logical displays" and format of each is established by the user via
the Type I command FORMAT (see FORMAT command in Section IV). Each
logical display contains a command line and several data-display areas. Optionally, each data-display area may be accompanied by a Type III com­
mand area pertaining only to the individual data-display area.
Figure 3 illustrates the simplest screen format. At the top of the 3270 screen
(Fig. 3, Line 1) is a system-required area containing the file-identifiers and
file status information. In this example, the "fileid" is ItTEST ASSEMBLE AI". The file-id may be modified by the user at any time during the editing session.
The editor will verify any new fileid entered. If any errors are encountered in
the new the, fileid, will not be changed, 'the old fileid will be re-displayed
and the'3270 audible alarm'will sound (no error message will be produced).
, Whfm a or SAVE request is the fileid at that point becomes the , name of the file written to disk (unless over-ridden by the FILE or SAVE .
command). The specified fileid must'contain all three identifiers; that is,
filename, filetype, and filemode. Each of these must conform to the specifi­
cations required by eMS for standard file identifiers. Furthermore, the
filename, filetype, and first character of the filemode (disk identification
letter) must not match that of any existing edit level.
The file status area, which makes up the rest of line one (1), cannot be
modified and contains pertinent information relative to the current edit level.
Following the RECFM and LRECL indicators within the status area is the "AUTOSAVE-ID" field (in parentheses); the next field is the current file
alteration count. In Figure 3, the" AUTOSA VE-ID" is 1 and the file alteration
count is 14. Further information on these fields can be found in Section IV, under the discussion of the SET command. The last field in the file status area
is the current record count. This count is always updated to reflect the
number of items currently in the working copy of the file.
Line 2 in figure 3 is the start of the first "logical display". Each logical
display begins with a pointer (= = = > ). This pointer identifies the start of the
Type I & II command area (known as the 'command line') for that "logical
display". Immediately following the command line is the first data-display
area (Figure 3, Line 3). Each data-display area is used to display one (1)
item of the file. Using the Type I command, FORMAT, the user may specify
the number of data-display areas for each logical display as well as the num­
ber of physical screen lines to be allocated for-each data-display area. There
must be at least one data-display area for each "logical display". In 3,
only one physical screen line has been allotted to each data-display; thus, the
user may view one file item on each successive line of the screen.
The screen format of Figure 3 is the "default" arrangement (that which
requires no user action).
System Overview 11
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