From d4dfa08b3d3b25a3e47362351197fb3ec8052881 Mon Sep 17 00:00:00 2001
From: "B. Watson" <urchlay@slackware.uk>
Date: Tue, 25 Oct 2022 20:23:15 -0400
Subject: Initial save-image support.

---
 dla.s | 56 ++++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 44 insertions(+), 12 deletions(-)

diff --git a/dla.s b/dla.s
index 04842e3..1d27cfb 100644
--- a/dla.s
+++ b/dla.s
@@ -363,8 +363,6 @@ waitkey:
  bne notredo
  jmp main
 notredo:
- cmp #$2e ; WriteCSV
- beq writecsv
  cmp #$3e ; Save
  beq saveimage
  cmp #$2a ; Exit
@@ -372,12 +370,44 @@ notredo:
  ;rts ; exit to DOS
  jmp COLDSV ; reboot
 
-writecsv:
 saveimage:
-notyet:
- lda #$40
- sta COLOR2
-
+ ldx #$10
+ lda #3 ; OPEN
+ sta ICCOM,x
+ lda #<filename
+ sta ICBAL,x
+ lda #>filename
+ sta ICBAH,x
+ lda #fnlen
+ sta ICBLL,x
+ lda #0
+ sta ICBLH,x
+ sta ICAX2,x
+ lda #8
+ sta ICAX1,x
+ jsr CIOV
+
+ ldx #$10
+ lda #$0b ; write binary record
+ sta ICCOM,x
+ lda #<screen
+ sta ICBAL,x
+ lda #>screen
+ sta ICBAH,x
+ lda #<(maxlines * linelen)
+ sta ICBLL,x
+ lda #>(maxlines * linelen)
+ sta ICBLH,x
+ jsr CIOV
+
+ ldx #$10
+ lda #$0c ; close
+ sta ICCOM,x
+ jsr CIOV
+ jmp keyloop
+
+diskerr:
+ sty textbuf
 hang: jmp hang
 ; TODO: code to save image goes here.
 ;;; End of main()
@@ -388,19 +418,21 @@ menumsg:
  .byte $00            ; 1 decimal point
  .byte $00,$00        ; 2 digits fractional minutes
  .byte $00            ; 1 the letter "m"
- .byte $00            ; 1 space
+ .byte $00,$00        ; 2 spaces
  .byte 'S'-$20+$80    ; 1
  scrcode "ave "       ; 3
- .byte 'W'-$20+$80    ; 1
- scrcode "rtCSV "     ; 6
  .byte 'R'-$20+$80    ; 1
  scrcode "edo "       ; 4
  .byte 'E'-$20+$80    ; 1
- scrcode "xit? "      ; 5
+ scrcode "xit?"       ; 4
  .byte $80            ; 1 (cursor)
- .byte $00            ; 1 space (filler) to make 32 bytes
+ .byte $00,$00,$00    ; 3 (filler)
 menulen = * - menumsg
 
+; filename for Save command
+filename: .byte "D:DLA.IMG"
+fnlen = *-filename+1
+
 ;;; Subroutine: set_limits
 ;;; Sets the X/Y min/max limits based on circlesize
 set_limits:
-- 
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