1 files changed, 29 insertions, 0 deletions

diff --git a/v4.0/src/DOS/HIGHSW.ASM b/v4.0/src/DOS/HIGHSW.ASM
new file mode 100644
index 0000000..9bd758f
--- /dev/null
+++ b/v4.0/src/DOS/HIGHSW.ASM
@@ -0,0 +1,29 @@
+;       SCCSID = @(#)highsw.asm 1.1 85/04/10
+TRUE    EQU     0FFFFH
+FALSE   EQU     NOT TRUE
+
+; Use the switches below to produce the standard Microsoft version or the IBM
+; version of the operating system
+MSVER   EQU     TRUE
+IBM     EQU     FALSE
+WANG    EQU     FALSE
+ALTVECT EQU     FALSE
+
+; Set this switch to cause DOS to move itself to the end of memory
+HIGHMEM EQU     TRUE
+
+        IF      IBM
+ESCCH   EQU     0                       ; character to begin escape seq.
+TOGLPRN EQU     TRUE                    ;One key toggles printer echo
+ZEROEXT EQU     TRUE
+        ELSE
+        IF      WANG                    ;Are we assembling for WANG?
+ESCCH   EQU     1FH                     ;Yes. Use 1FH for escape character
+        ELSE
+ESCCH   EQU     1BH
+        ENDIF
+CANCEL  EQU     "X"-"@"                 ;Cancel with Ctrl-X
+TOGLPRN EQU     FALSE                   ;Separate keys for printer echo on
+                                        ;and off
+ZEROEXT EQU     TRUE
+        ENDIF