started work on ram disk

src/,,config_mega65.s

@@ -69,7 +69,7 @@
 ;; #CONFIG# KEYCMD_F10                 "\5FL"
 ;; #CONFIG# KEYCMD_F11                 "@29$"
 ;; #CONFIG# KEYCMD_F12                 "\5FHF"
-;; #CONFIG# KEYCMD_F13                 "JOYCRSR 2"
+;; #CONFIG# KEYCMD_F13                 "@30$"
 ;; #CONFIG# KEYCMD_F14                 "BOOTCPM"
 
 
@@ -92,7 +92,7 @@
 
 ;; #CONFIG# UNIT_SDCARD                28
 ;; #CONFIG# UNIT_FLOPPY                29
-;; #CONFIG# UNIT_RAMDISK               0         ; do not change, ram disk is not implemented yet
+;; #CONFIG# UNIT_RAMDISK               30
 
 
 ; --- Debug options

src/dos_m65/assets/dos_ramdisk_filename.s

@@ -0,0 +1,9 @@
+
+;
+; File name for the initial RAM disk
+;
+
+ramdisk_filename:
+
+	!pet "ramdisk.dnp"
+	!byte $00

src/dos_m65/unit_ramdisk/unit_rd_init.s

@@ -23,6 +23,46 @@ unit_rd_init:
 	sta RD_STATUS_BUF,x
 	bne @1
 
+	; End of initialization, now try to load the initial RAM disk; first set file name
+
+	ldx #<ramdisk_filename
+	ldy #>ramdisk_filename
+
+	lda #$2E                           ; dos_setname
+	sta HTRAP00
+	+nop
+
+	; Try to find the file
+
+	jsr fs_vfs_direntmem_prepare
+
+	ldy #>FS_HVSR_DIRENT  ; XXX is it needed?
+
+	lda #$30                           ; dos_findfirst
+	sta HTRAP00
+	+nop
+
+	bcc @error_not_found               ; branch if file not found    XXX why it can't find the file?
+
+	; XXX load the file
+
+
+
+
+	lda #$20                           ; dos_closefile
+	sta HTRAP00
+	+nop
+
+	jsr fs_vfs_direntmem_restore
+
 	; End of initialization
 
 	rts
+
+
+@error_not_found:
+
+
+	; XXX set information about file not found
+
+	jmp fs_vfs_direntmem_restore