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Digital Research
2020-11-06 18:50:37 +01:00

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Using control characters in a SUBMIT file
-----
Question: How do I enter control characters into a SUBMIT file?
The instructions on page 28 of the CP/M manual do not seem to work.
Answer: SUBMIT requires you to enter '^z' to place a CTRL Z in the
file. The problem comes in that SUBMIT also converts all characters to
uppercase. The following patch suggested by Digital Research will modify
SUBMIT to require '^Z'.
A>ddt submit.com
DDT VERS 2.2
NEXT PC
0600 0100
-s442
0442 61 41
0443 32 .
-g0
A>save 5 submit.com
This alternate patch will allow lowercase characters to be entered
which is also extremely helpful when using XSUB and ED with strings that
require lowercase characters.
A>ddt submit.com
DDT VERS 2.2
NEXT PC
0600 0100
-s370
0370 5F FF
0371 32 .
-g0
A>save 5 submit.com
The following example submit file (using only the alternate patch)
uses ED to search a file and replace all lowercase strings 'recieve' with
'receive'.
xsub
ed file.doc
#a
b#srecieve^zreceive
e
It should be mentioned that in no case can the control characters
'^P' or '^C' be used in a submit file to obtain the normal functions of
console input for printer toggle or warm start.
CTRL P and CTRL C in a SUBMIT file
-----
Question: Why can't I put "CTRL P" and "CTRL C" in a SUBMIT file
using the instructions in the manual?
Answer: The usual processing of characters done by the BDOS on
input is bypassed when using SUBMIT. The following programs can simulate
these functions.
;
; PRINT - turn printer echo on and off
;
; Usage:
;
; A>PRINT ?
;(turn printer echo on with anything following PRINT)
; A>PRINT
;(turn printer echo off with nothing following PRINT)
;
0100 org 0100h
0100 2A4E00 lhld 04eh ;address of bios
0103 110DF5 lxi d,0f50dh ;offset of flag in bdos
0106 19 dad d ;point to it
0107 3A8000 lda 080h ;echo on or off?
010A 77 mov m,a ;set the flag
010B C9 ret ;return directly to ccp
; WBOOT - perform a warm boot
;
0100 org 0100h
0100 C7 rst 0
;
;PAUSE - suspend execution of a SUBMIT file until a character is typed
;
0100 org 0100h
0100 0E09 mvi c,9
0102 110D01 lxi d,prompt
0105 CD0500 call 5
0108 0E01 mvi c,1
010A C30500 jmp 5
010D 5479706520prompt db 'Type any key when ready to continue$'