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Update patch, better timing info

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This commit is contained in:
Gregor Riepl 2022-09-04 10:24:01 +02:00
parent f1d23b090f
commit 4469010fb1
1 changed files with 8 additions and 4 deletions
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12
vice-tape-rs232.patch
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@ -12,10 +12,10 @@ index cd38b6d..cf10121 100644
+ tape-rs232.h + tape-rs232.h
diff --git a/src/tapeport/tape-rs232.c b/src/tapeport/tape-rs232.c diff --git a/src/tapeport/tape-rs232.c b/src/tapeport/tape-rs232.c
new file mode 100644 new file mode 100644
index 0000000..680a1c4 index 0000000..416657b
--- /dev/null --- /dev/null
+++ b/src/tapeport/tape-rs232.c +++ 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 + * 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; +} tape_rs232_state_t;
+static tape_rs232_state_t tape_rs232_state[TAPEPORT_MAX_PORTS] = { { false, }, }; +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 */ +/* device interface prototypes */
@ -186,7 +189,7 @@ index 0000000..680a1c4
+ alarm_unset(dev->read_alarm); + alarm_unset(dev->read_alarm);
+ } + }
+} +}
+CLOCK last_maincpu_clk = 0; +
+static void tape_rs232_write(int port, int write_bit) +static void tape_rs232_write(int port, int write_bit)
+{ +{
+ if (port < 0 || port >= TAPEPORT_MAX_PORTS) { + 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); + dev->write_register = (dev->write_register >> 1) | (dev->write_level ? 0x200 : 0x000);
+ /* and decrement the counter */ + /* and decrement the counter */
+ --dev->write_shift; + --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; + 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); + 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? */ + /* transmission complete? */