From 4469010fb16b7e3b94c3730610eb4b0b705040c8 Mon Sep 17 00:00:00 2001
From: Gregor Riepl <onitake@gmail.com>
Date: Sun, 4 Sep 2022 10:24:01 +0200
Subject: [PATCH] Update patch, better timing info

---
 vice-tape-rs232.patch | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/vice-tape-rs232.patch b/vice-tape-rs232.patch
index 8dd71ea..ac5055b 100644
--- a/vice-tape-rs232.patch
+++ b/vice-tape-rs232.patch
@@ -12,10 +12,10 @@ index cd38b6d..cf10121 100644
 +	tape-rs232.h
 diff --git a/src/tapeport/tape-rs232.c b/src/tapeport/tape-rs232.c
 new file mode 100644
-index 0000000..680a1c4
+index 0000000..416657b
 --- /dev/null
 +++ b/src/tapeport/tape-rs232.c
-@@ -0,0 +1,270 @@
+@@ -0,0 +1,274 @@
 +/*
 + * tape-rs232.h: RS-232 interface for the PET, connected to the tape port
 + *
@@ -80,6 +80,9 @@ index 0000000..680a1c4
 +} tape_rs232_state_t;
 +static tape_rs232_state_t tape_rs232_state[TAPEPORT_MAX_PORTS] = { { false, }, };
 +
++CLOCK last_maincpu_clk = 0;
++CLOCK last_sample_maincpu_clk = 0;
++
 +/* ------------------------------------------------------------------------- */
 +
 +/* device interface prototypes */
@@ -186,7 +189,7 @@ index 0000000..680a1c4
 +        alarm_unset(dev->read_alarm);
 +    }
 +}
-+CLOCK last_maincpu_clk = 0;
++
 +static void tape_rs232_write(int port, int write_bit)
 +{
 +    if (port < 0 || port >= TAPEPORT_MAX_PORTS) {
@@ -235,7 +238,8 @@ index 0000000..680a1c4
 +    dev->write_register = (dev->write_register >> 1) | (dev->write_level ? 0x200 : 0x000);
 +    /* and decrement the counter */
 +    --dev->write_shift;
-+    long delta = (long) maincpu_clk - last_maincpu_clk;
++    long delta = (long) maincpu_clk - last_sample_maincpu_clk;
++    last_sample_maincpu_clk = maincpu_clk;
 +    last_maincpu_clk = maincpu_clk;
 +    log_debug("tape_rs232: sample %d reg 0x%04x offset %lu clock %lu delta %ld shift %u", dev->write_level, dev->write_register, offset, maincpu_clk, delta, dev->write_shift);
 +    /* transmission complete? */