more work on filename/command reception in CBDOS

src/dos_m65/,aliases_dos.s

@@ -28,10 +28,15 @@
 
 	; Free space: $800C-$8069
 
-	!addr XX_CHANNEL       = $806A ; current channel
+	!addr XX_CHANNEL       = $8067 ; current channel
-	!addr SD_CHANNEL       = $806A ; - SD card
+	!addr SD_CHANNEL       = $8067 ; - SD card
-	!addr FD_CHANNEL       = $806B ; - floppy
+	!addr FD_CHANNEL       = $8068 ; - floppy
-	!addr RD_CHANNEL       = $806C ; - ram disk
+	!addr RD_CHANNEL       = $8069 ; - ram disk
+
+	!addr XX_CMDFN_IDX     = $806A ; index byte for storing file name/command
+	!addr SD_CMDFN_IDX     = $806A ; - SD card
+	!addr FD_CMDFN_IDX     = $806B ; - floppy
+	!addr RD_CMDFN_IDX     = $806C ; - ram disk
 
 	!addr XX_STATUS_IDX    = $806D ; index byte for reading status 
 	!addr SD_STATUS_IDX    = $806D ; - SD card
@@ -42,3 +47,7 @@
 	!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
+
+	!addr SD_CMDFN_BUF     = $8100 ; buffer for command and/or file name, 128 bytes, SD card
+	!addr FD_CMDFN_BUF     = $8180 ; buffer for command and/or file name, 128 bytes, floppy
+	!addr RD_CMDFN_BUF     = $8200 ; buffer for command and/or file name, 128 bytes, ram disk

src/dos_m65/dev_floppy/dev_fd_cmd_close.s

@@ -0,0 +1,12 @@
+
+;
+; Close currently opened file
+;
+
+
+dev_fd_cmd_CLOSE:
+
+	; XXX provide implementation
+
+	sec
+	jmp dos_SECOND_done

src/dos_m65/dev_floppy/dev_fd_cmd_open.s

@@ -0,0 +1,12 @@
+
+;
+; Open file for reading
+;
+
+
+dev_fd_cmd_OPEN:
+
+	; XXX provide implementation
+
+	sec
+	jmp dos_SECOND_done

src/dos_m65/dev_floppy/dev_fd_init.s

@@ -10,6 +10,7 @@ dev_fd_init:
 
 	ldx #$00
 	stx FD_STATUS_IDX
+	stx FD_CMDFN_IDX
 	dex
 @1:
 	inx

src/dos_m65/dev_ramdisk/dev_rd_cmd_close.s

@@ -0,0 +1,12 @@
+
+;
+; Close currently opened file
+;
+
+
+dev_rd_cmd_CLOSE:
+
+	; XXX provide implementation
+
+	sec
+	jmp dos_SECOND_done

src/dos_m65/dev_ramdisk/dev_rd_cmd_open.s

@@ -0,0 +1,12 @@
+
+;
+; Open file for reading
+;
+
+
+dev_rd_cmd_OPEN:
+
+	; XXX provide implementation
+
+	sec
+	jmp dos_SECOND_done

src/dos_m65/dev_ramdisk/dev_rd_init.s

@@ -10,6 +10,7 @@ dev_rd_init:
 
 	ldx #$00
 	stx RD_STATUS_IDX
+	stx RD_CMDFN_IDX
 	dex
 @1:
 	inx

src/dos_m65/dev_sdcard/dev_sd_cmd_close.s

@@ -0,0 +1,12 @@
+
+;
+; Close currently opened file
+;
+
+
+dev_sd_cmd_CLOSE:
+
+	; XXX provide implementation
+
+	sec
+	jmp dos_SECOND_done

src/dos_m65/dev_sdcard/dev_sd_cmd_open.s

@@ -0,0 +1,12 @@
+
+;
+; Open file for reading
+;
+
+
+dev_sd_cmd_OPEN:
+
+	; XXX provide implementation
+
+	sec
+	jmp dos_SECOND_done

src/dos_m65/dev_sdcard/dev_sd_init.s

@@ -10,6 +10,7 @@ dev_sd_init:
 
 	ldx #$00
 	stx SD_STATUS_IDX
+	stx SD_CMDFN_IDX
 	dex
 @1:
 	inx

src/dos_m65/dos_acptr.s

@@ -50,7 +50,7 @@ dos_ACPTR_eoi:
 
 
 
-; Retrieving bytes from the status string
+; Sending bytes from the status string
 
 dos_ACPTR_getsts_SD:                   ; get next byte of status - SD card
 

src/dos_m65/dos_ciout.s

@@ -6,7 +6,66 @@
 
 dos_CIOUT:
 
-	; XXX provide implementation
+	pha
+	phx
 
-	sec
+	; XXX handle cases of transferring data
+
+	; Receive command/file name byte
+
+	ldx IDX2_TALKER
+	jsr (dos_CIOUT_putcmdfn_table, X)
+
+	plx
+	pla
+
+	clc
 	rts
+
+
+
+
+
+; Receiving command/file name
+
+dos_CIOUT_putcmdfn_SD:                   ; get next byte of status - SD card
+
+	ldx SD_CMDFN_IDX
+	sta SD_CMDFN_IDX,x
+	inx
+	bpl @1
+	ldx #$7F
+@1:
+	lda #$00
+	sta SD_CMDFN_IDX,x
+	rts
+
+dos_CIOUT_putcmdfn_FD:                   ; get next byte of status - floppy
+
+	ldx FD_CMDFN_IDX
+	sta FD_CMDFN_IDX,x
+	inx
+	bpl @1
+	ldx #$7F
+@1:
+	lda #$00
+	sta FD_CMDFN_IDX,x
+	rts
+
+dos_CIOUT_putcmdfn_RD:                   ; get next byte of status - ram disk
+
+	ldx RD_CMDFN_IDX
+	sta RD_CMDFN_IDX,x
+	inx
+	bpl @1
+	ldx #$7F
+@1:
+	lda #$00
+	sta RD_CMDFN_IDX,x
+	rts
+
+dos_CIOUT_putcmdfn_table:
+
+	!word dos_CIOUT_putcmdfn_SD
+	!word dos_CIOUT_putcmdfn_FD
+	!word dos_CIOUT_putcmdfn_RD

src/dos_m65/dos_listen_talk.s

@@ -38,6 +38,8 @@ dos_LISTEN_success:
 	asl
 	sta IDX2_LISTENER
 
+	; XXX should we reset XX_CMDFN_IDX ?
+
 	bra dos_common_LSN_TALK_UN
 
 ; TALK

src/dos_m65/dos_second_tksa.s

@@ -16,9 +16,9 @@ dos_SECOND:
 	tay
 	and #$0F                   ; support channels 0-15, like 1541 drive
 
-	ldx IDX1_LISTENER          ; store channel
+	ldx IDX1_LISTENER
 	bmi dos_SECOND_done        ; do nothing if no listener
-	sta XX_CHANNEL, x
+	sta XX_CHANNEL, x          ; store channel
 
 	; Determine command type
 
@@ -32,10 +32,17 @@ dos_SECOND:
 
 	; XXX provide implementation
 
-dos_SECOND_OPEN:               ; XXX provide implementaation
+	bra dos_SECOND_done
-dos_SECOND_CLOSE:              ; XXX provide implementaation
 
-	; finish
+dos_SECOND_OPEN:
+
+	ldx IDX2_LISTENER
+	jmp (dos_cmd_OPEN_vectable, x)
+
+dos_SECOND_CLOSE:
+
+	ldx IDX2_LISTENER
+	jmp (dos_cmd_CLOSE_vectable, x)
 
 dos_SECOND_done:
 
@@ -50,9 +57,11 @@ dos_TKSA:
 
 	and #$0F                   ; support channels 0-15, like 1541 drive
 
-	ldx IDX1_TALKER            ; store channel
+	ldx IDX1_TALKER
 	bmi dos_TKSA_done          ; do nothing if no taalker
-	sta XX_CHANNEL, x
+	sta XX_CHANNEL, x          ; store channel
+
+	; FALLTROUGH
 
 dos_TKSA_done:
 

src/dos_m65/dos_vectable_dev.s

@@ -0,0 +1,18 @@
+
+;
+; Vector tables to device-specific routines
+;
+
+
+dos_cmd_OPEN_vectable:
+
+	!word dev_sd_cmd_OPEN
+	!word dev_fd_cmd_OPEN
+	!word dev_rd_cmd_OPEN
+
+
+dos_cmd_CLOSE_vectable:
+
+	!word dev_sd_cmd_CLOSE
+	!word dev_fd_cmd_CLOSE
+	!word dev_rd_cmd_CLOSE