From 3f71fcb29333d6492dc0799e06622c6d2cc40a56 Mon Sep 17 00:00:00 2001
From: cpg <cpg@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Thu, 12 Oct 2000 21:00:19 +0000
Subject: [PATCH] now sets up SIO command and transfer direction; __sio_call
 now does the real work

git-svn-id: svn://svn.cc65.org/cc65/trunk@361 b7a2c559-68d2-44c3-8de9-860c34a00d81
---
 libsrc/atari/dioread.s  | 44 ++++++-----------------------------------
 libsrc/atari/diowrite.s | 44 ++++++-----------------------------------
 2 files changed, 12 insertions(+), 76 deletions(-)

diff --git a/libsrc/atari/dioread.s b/libsrc/atari/dioread.s
index 06ea0d484..1b56e4294 100644
--- a/libsrc/atari/dioread.s
+++ b/libsrc/atari/dioread.s
@@ -8,48 +8,16 @@
 ; _sectnum_t - 16bit
 ;
 
-
+	.import		__sio_call,pushax
  	.export		__dio_read
-	.import		popa,popax
 	.include	"atari.inc"
 
 .proc	__dio_read
 
-	sta	DBUFLO		; set buffer address into DCB
-	stx	DBUFHI
-	jsr	popax
-	sta	DAUX1		; set sector #
-	stx	DAUX2
-	jsr	popa
-	cmp	#16
-	bcs	_inv_dev	; invalid device #
-	adc	#1
-	sta	DUNIT		; unit number (d1,d2,d3,...)
-	lda	#$31		; D1 (drive_id == 0) has id $31
-	sta	DDEVIC
-	lda	#0
-	sta	DBYTHI		; high byte of bytes to transfer
-	lda	#%01000000	; indicate i/o direction (read)
-	sta	DSTATS
-	lda	#15
-	sta	DTIMLO		; value got from DOS source
-	lda	#128
-	sta	DBYTLO		; low byte of bytes to transfer	
-	lda	#SIO_READ	; read sector
-	sta	DCOMND
-
-	jsr	SIOV		; execute
-
-	ldx	#0
-	lda	DSTATS
-	bmi	_req_err	; error occurred
-	txa			; no error occurred
-_req_err:
-	rts
-
-_inv_dev:
-	ldx	#0
-	lda	#NONDEV		; non-existent device error
-	rts
+	jsr	pushax		; push buffer address
+	ldx	#%01000000	; direction value
+	lda	#SIO_READ	; read sector command
+	jmp	__sio_call	; do the call and return to the user
 
 .endproc
+
diff --git a/libsrc/atari/diowrite.s b/libsrc/atari/diowrite.s
index 6c037f379..315d9b5ac 100644
--- a/libsrc/atari/diowrite.s
+++ b/libsrc/atari/diowrite.s
@@ -8,48 +8,16 @@
 ; _sectnum_t - 16bit
 ;
 
-
+	.import		__sio_call,pushax
  	.export		__dio_write
-	.import		popa,popax
 	.include	"atari.inc"
 
 .proc	__dio_write
 
-	sta	DBUFLO		; set buffer address into DCB
-	stx	DBUFHI
-	jsr	popax
-	sta	DAUX1		; set sector #
-	stx	DAUX2
-	jsr	popa
-	cmp	#16
-	bcs	_inv_dev	; invalid device #
-	adc	#1
-	sta	DUNIT		; unit number (d1,d2,d3,...)
-	lda	#$31		; D1 (drive_id == 0) has id $31
-	sta	DDEVIC
-	lda	#0
-	sta	DBYTHI		; high byte of bytes to transfer
-	lda	#%10000000	; indicate i/o direction (write)
-	sta	DSTATS
-	lda	#15
-	sta	DTIMLO		; value got from DOS source
-	lda	#128
-	sta	DBYTLO		; low byte of bytes to transfer	
-	lda	#SIO_WRITE	; write sector
-	sta	DCOMND
-
-	jsr	SIOV		; execute
-
-	ldx	#0
-	lda	DSTATS
-	bmi	_req_err	; error occurred
-	txa			; no error occurred
-_req_err:
-	rts
-
-_inv_dev:
-	ldx	#0
-	lda	#NONDEV		; non-existent device error
-	rts
+	jsr	pushax		; push buffer address
+	ldx	#%10000000	; indicate i/o direction (write)
+	lda	#SIO_WRITE	; write sector command
+	jmp	__sio_call	; do the call and return to the user
 
 .endproc
+
-- 
2.39.5