erase status after reading error code

Makefile

@@ -62,6 +62,7 @@ SRCDIR_KERNAL  = $(SRCDIR_COMMON) \
 
 SRCDIR_DOS_M65 = $(SRCDIR_COMMON) \
                  src/dos_m65 \
+                 src/dos_m65/assets \
                  src/dos_m65/dev_floppy \
                  src/dos_m65/dev_ramdisk \
                  src/dos_m65/dev_sdcard

src/dos_m65/,aliases_dos.s

@@ -38,6 +38,7 @@
 	!addr FD_STATUS_IDX    = $806E ; - floppy
 	!addr RD_STATUS_IDX    = $806F ; - ram disk
 
+	!addr XX_STATUS_STR    = $8070
 	!addr SD_STATUS_STR    = $8070 ; status string for SD card, terminated by 0
 	!addr FD_STATUS_STR    = $80A0 ; status string for floppy drive, terminated by 0
 	!addr RD_STATUS_STR    = $80D0 ; status string for ram disk, terminated by 0

src/dos_m65/dos_acptr.s

@@ -24,8 +24,6 @@ dos_ACPTR_status:
 	sta TBTCNT                         ; byte return
 	beq dos_ACPTR_reset_status
 
-	; XXX
-
 	clc
 	rts
 
@@ -38,11 +36,8 @@ dos_ACPTR_fail:
 
 dos_ACPTR_reset_status:
 
-	; XXX replace status with OK instead
-
-	ldx IDX1_TALKER
-	lda #$00
-	sta XX_STATUS_IDX,x
+	lda IDX1_TALKER
+	jsr dos_status_00
 
 	; FALLTROUGH
 

src/dos_m65/dos_error.s

@@ -0,0 +1,91 @@
+
+;
+; Set current error or status
+;
+
+
+; XXX add methods for remaining codes
+; XXX size-optimize this, move some parts into subroutines
+
+
+; .A = 0 for SD card, 1 for FDD, 2 for RAM disk
+
+dos_status_00: ; OK
+
+	pha
+	phx
+	phy
+
+	; Set status byte pointer to the beginning
+
+	tax
+	lda #$00
+	sta XX_STATUS_IDX, x
+
+	; Set .X to offset from XX_STATUS_STR
+
+	lda dos_status_offset, x
+	tax
+
+	; Store '00,'
+
+	lda #'0'
+	sta XX_STATUS_STR, x
+	inx
+	sta XX_STATUS_STR, x
+	inx
+	lda #','
+	sta XX_STATUS_STR, x
+	inx
+
+	; Store 'OK'
+
+	dex
+	ldy #$FF
+@1:
+	inx
+	iny
+	lda dos_err_00, y
+	beq @2
+	sta XX_STATUS_STR, x
+	bra @1
+@2:
+	; Store ',00,00'
+
+	lda #','
+	sta XX_STATUS_STR, x
+	inx
+	lda #'0'
+	sta XX_STATUS_STR, x
+	inx
+	sta XX_STATUS_STR, x
+	inx
+	lda #','
+	sta XX_STATUS_STR, x
+	inx
+	lda #'0'
+	sta XX_STATUS_STR, x
+	inx
+	sta XX_STATUS_STR, x
+	inx
+
+	; Store 0 (mark end of the status)
+
+	lda #$00
+	sta XX_STATUS_STR, x 
+
+	; End
+
+	ply
+	plx
+	pla
+
+	clc ; mark status as OK 
+	rts
+
+
+
+
+dos_status_offset:
+
+	!byte $00,$20,$40