From 616a8501b56ad1a098ca02a42fd843c441c790bc Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Mon, 29 Jun 2020 02:19:05 +0200
Subject: [PATCH] Moved floppy writeback call to fdc_poll_readwrite_finish(),
 in order to have the track written less often (no need to write it on every
 sector).

---
 src/floppy/fdc.c        | 3 +++
 src/floppy/fdd.c        | 7 +++++++
 src/floppy/fdd_86f.c    | 1 -
 src/include/86box/fdd.h | 1 +
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/floppy/fdc.c b/src/floppy/fdc.c
index 2667727b6..3be66cf0f 100644
--- a/src/floppy/fdc.c
+++ b/src/floppy/fdc.c
@@ -1468,6 +1468,9 @@ fdc_poll_common_finish(fdc_t *fdc, int compare, int st5)
 static void
 fdc_poll_readwrite_finish(fdc_t *fdc, int compare)
 {
+    if ((fdc->interrupt == 5) || (fdc->interrupt == 9))
+	fdd_do_writeback(real_drive(fdc, fdc->drive));
+
     fdc->inread = 0;
     fdc->interrupt = -2;
 
diff --git a/src/floppy/fdd.c b/src/floppy/fdd.c
index 791c82abd..7e1b21452 100644
--- a/src/floppy/fdd.c
+++ b/src/floppy/fdd.c
@@ -719,3 +719,10 @@ fdd_init(void)
     fdd_load(2, floppyfns[2]);
     fdd_load(3, floppyfns[3]);
 }
+
+
+void
+fdd_do_writeback(int drive)
+{
+    d86f_handler[drive].writeback(drive);
+}
diff --git a/src/floppy/fdd_86f.c b/src/floppy/fdd_86f.c
index 131f1658f..fe61eae2a 100644
--- a/src/floppy/fdd_86f.c
+++ b/src/floppy/fdd_86f.c
@@ -1712,7 +1712,6 @@ d86f_write_sector_data(int drive, int side, int mfm, uint16_t am)
 			dev->data_find.sync_marks = dev->data_find.bits_obtained = dev->data_find.bytes_obtained = 0;
 			dev->error_condition = 0;
 			dev->state = STATE_IDLE;
-			d86f_handler[drive].writeback(drive);
 			fdc_sector_finishread(d86f_fdc);
 			return;
 		}
diff --git a/src/include/86box/fdd.h b/src/include/86box/fdd.h
index b486b617d..4a7de7c21 100644
--- a/src/include/86box/fdd.h
+++ b/src/include/86box/fdd.h
@@ -112,6 +112,7 @@ extern void	fdd_readaddress(int drive, int side, int density);
 extern void	fdd_format(int drive, int side, int density, uint8_t fill);
 extern int	fdd_hole(int drive);
 extern void	fdd_stop(int drive);
+extern void	fdd_do_writeback(int drive);
 
 extern int	motorspin;
 extern uint64_t	motoron[FDD_NUM];