Added the Phoenix 486 Jumper Readout port

A must have for Phoenix 486 machines
2020-09-29 12:07:03 +03:00
parent 996dcd4f84
commit dd914429d8
5 changed files with 112 additions and 18 deletions
--- a/src/device/phoenix_486_jumper.c
+++ b/src/device/phoenix_486_jumper.c
@@ -0,0 +1,107 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Implementation of the Phoenix 486 Jumper Readout
+ *
+ *		Copyright 2020 Tiseno100
+ */
+
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#define HAVE_STDARG_H
+#include <86box/86box.h>
+#include "cpu.h"
+#include <86box/timer.h>
+#include <86box/io.h>
+#include <86box/device.h>
+#include <86box/chipset.h>
+
+/*
+Bit 7 = Super I/O
+Bit 6 = ???
+Bit 5 = ???
+Bit 4 = ???
+Bit 3 = ???
+Bit 2 = ???
+Bit 1 = ???
+Bit 0 = ???
+*/
+
+typedef struct
+{
+    uint8_t	jumper;
+} phoenix_486_jumper_t;
+
+#ifdef ENABLE_PHOENIX_486_JUMPER_LOG
+int phoenix_486_jumper_do_log = ENABLE_PHOENIX_486_JUMPER_LOG;
+static void
+phoenix_486_jumper_log(const char *fmt, ...)
+{
+    va_list ap;
+
+    if (phoenix_486_jumper_do_log) {
+	va_start(ap, fmt);
+	pclog_ex(fmt, ap);
+	va_end(ap);
+    }
+}
+#else
+#define phoenix_486_jumper_log(fmt, ...)
+#endif
+
+static void
+phoenix_486_jumper_write(uint16_t addr, uint8_t val, void *priv)
+{
+    phoenix_486_jumper_t *dev = (phoenix_486_jumper_t *) priv;
+    phoenix_486_jumper_log("Phoenix 486 Jumper: Write %02x\n", val);
+    dev->jumper = val;
+}
+
+static uint8_t
+phoenix_486_jumper_read(uint16_t addr, void *priv)
+{
+    phoenix_486_jumper_t *dev = (phoenix_486_jumper_t *) priv;
+    phoenix_486_jumper_log("Phoenix 486 Jumper: Read %02x\n", dev->jumper);
+    return dev->jumper;
+}
+
+
+static void
+phoenix_486_jumper_close(void *priv)
+{
+    phoenix_486_jumper_t *dev = (phoenix_486_jumper_t *) priv;
+
+    free(dev);
+}
+
+static void *
+phoenix_486_jumper_init(const device_t *info)
+{
+    phoenix_486_jumper_t *dev = (phoenix_486_jumper_t *) malloc(sizeof(phoenix_486_jumper_t));
+    memset(dev, 0, sizeof(phoenix_486_jumper_t));
+
+    dev->jumper = info->local;
+
+    io_sethandler(0x0078, 0x0001, phoenix_486_jumper_read, NULL, NULL, phoenix_486_jumper_write, NULL, NULL, dev);
+
+    return dev;
+}
+
+const device_t phoenix_486_jumper_device = {
+    "Phoenix 486 Jumper Readout",
+    0,
+    0,
+    phoenix_486_jumper_init, phoenix_486_jumper_close, NULL,
+    NULL, NULL, NULL,
+    NULL
+};