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CPM OPERATING SYSTEMS/CPM 2.X/CPM 2.2/PATCHES/SUBMIT.002

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+
+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$'
+
+