save and restore X register so DOS doesn't lose track of how long the current input buffer command is

This commit is contained in:
4am 2016-10-31 09:51:00 -04:00
parent ae20c6049b
commit 3bdedd887e

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@ -38,7 +38,6 @@
!addr COUT = $FDED
;private arbitrary addresses
!addr LINE = $40
!addr ZMANPARML = $40
!addr ZMANPARMH = $41
!addr DOSBUFL = $42
@ -205,19 +204,28 @@ GlobalKeyboardHook
;no -> return to DOS
rts
+
txa
pha
;first, scroll the edit buffer onto the screen
;(this also swaps the current screen contents out so we can restore it later)
jsr ScrollEditBufferIn
;do the thing
lda #0 ;0=false, non-0=true
sta gIsDirty
jsr EditorMode
;scroll the edit buffer out and the original screen back in
jsr ScrollEditBufferOut
;save to disk
;save to disk (if necessary)
lda gIsDirty
beq +
jsr SaveFile
+
pla
tax
;lather, rinse, repeat
jmp GetKey
@ -377,6 +385,8 @@ EditorMode
beq _doneEditorMode
cmp #ESC
beq _doneEditorMode
ldx #1
stx gIsDirty
cmp #IMPORTKEY
beq ImportScreen
cmp #LTARROW
@ -573,6 +583,10 @@ MyCH
!byte 0
MyCV
!byte 0
LINE
!byte 0
gIsDirty
!byte 0
TextCalcHi
!byte $04, $04, $05, $05, $06, $06, $07, $07