Hook reset to cleanly quit DeskTop back to ProDOS. Resolves #141

* Fails on Virtual II and KEGS/GSPort/GSPlus, as they fail to
  disable aux memory on reset
* Will fail within Disk Copy overlay

RELEASE-NOTES.md

@@ -78,6 +78,7 @@ file, then select the appropriate command from the Apple menu.
 * Correct rendering issues with desktop volume icons. (#117)
 * Prevent occasional rectangle drawn on desktop after window close. (#120)
 * Empty directories can be copied/moved. (#121)
+* Ctrl+Reset quits cleanly back to ProDOS (except buggy emulators). (#141)
 * Desk Accessories:
   * Date: Read-only on systems with a clock. On systems without a clock, date is saved for next session. (#30, #39)
   * Calculator: don't mis-paint when moved offscreen and other fixes. (#33, #34)

desktop/desktop_main.s

@@ -2139,6 +2139,12 @@ eject_flag:
 
 str_quit_code:  PASCAL_STRING "Quit.tmp"
 
+reset_handler:
+        ;; Restore DeskTop Main expected state...
+        sta     ALTZPON
+        lda     LCBANK1
+        lda     LCBANK1
+
 start:
         MLI_RELAY_CALL OPEN, open_params
         bne     fail
@@ -2158,6 +2164,7 @@ fail:   jsr     ShowAlert
 
 .endproc
         cmd_quit := cmd_quit_impl::start
+        reset_handler := cmd_quit_impl::reset_handler
 
 ;;; ============================================================
 ;;; Exit DHR, restore device list, reformat /RAM.
@@ -15422,6 +15429,19 @@ str_preview_txt:
 
 start:
 
+;;; ============================================================
+;;; Set the reset vector to cold start
+.scope hook_reset_vector
+
+        ;; Main hook
+        lda     #<desktop_main::reset_handler
+        sta     RESETVEC
+        lda     #>desktop_main::reset_handler
+        sta     RESETVEC+1
+        eor     #$A5
+        sta     RESETVEC+2
+
+.endscope
 ;;; ============================================================
 ;;; Detect Machine Type
 

inc/apple2.inc

@@ -45,6 +45,7 @@ HR3_OFF         := $C0B6
 
 ;;; Monitor
 INIT            := $FB2F
+SETPWRC         := $FB6F
 VERSION         := $FBB3
 BELL1           := $FBDD
 VTAB            := $FC22
@@ -52,6 +53,7 @@ VTABZ           := $FC24
 HOME            := $FC58
 PRBYTE          := $FDDA
 COUT            := $FDED
+MOVE            := $FE2C
 SETKBD          := $FE89
 SETVID          := $FE93
 MONZ            := $FF69
@@ -181,6 +183,7 @@ DESTINATIONHI   := $43
 ;;; Other Locations
 XFERSTARTLO     := $03ED
 XFERSTARTHI     := $03EE
+RESETVEC        := $03F2
 
 
 ;;; ============================================================