From: Tormod Volden <debian.tormod@gmail.com>
Date: Fri, 6 Nov 2015 23:24:57 +0000 (+0100)
Subject: dragon-nx32: SPI: read out blk_op before mapping user process
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=e7694a8ea96e41296446e37222f52e8747062675;p=FUZIX.git

dragon-nx32: SPI: read out blk_op before mapping user process

I wish I had seen Brett's similar fix for IDE before debugging
this...

Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
---

diff --git a/Kernel/platform-dragon-nx32/spi.s b/Kernel/platform-dragon-nx32/spi.s
index ccf9faef..38249025 100644
--- a/Kernel/platform-dragon-nx32/spi.s
+++ b/Kernel/platform-dragon-nx32/spi.s
@@ -103,13 +103,13 @@ _sd_spi_receive_sector:
 	pshs y,dp
 	lda #0xFF
 	tfr a,dp
+	ldx _blk_op
+	leay 512,x
+	sty endspi
 	lda _blk_op+2
 	beq rdspi
 	jsr map_process_always
-rdspi:	ldx _blk_op
-	leay 512,x
-	sty endspi
-	lda #0x14		; FRX on, external clock on
+rdspi:	lda #0x14		; FRX on, external clock on
 	sta SPICTRL
 read8:
 	lda <SPIDATA
@@ -135,12 +135,14 @@ _sd_spi_transmit_sector:
 	pshs y,dp
 	lda #0xFF
 	tfr a,dp
+	ldx _blk_op
+	leay 512,x
+	sty endspi
 	lda _blk_op+2
 	beq wrspi
 	jsr map_process_always
-wrspi:	ldx _blk_op
-	leay 512,x
-	sty endspi
+wrspi:	lda #0x14		; FRX on, external clock on
+	sta SPICTRL
 write8:
 	ldd ,x++
 	sta <SPIDATA