Finished the great internal machine reorganization and added the FIC PO-6000.

src/sio/CMakeLists.txt

@@ -19,6 +19,7 @@ add_library(sio OBJECT
     sio_82091aa.c
     sio_acc3221.c
     sio_ali5123.c
+    sio_cbm_io.c
     sio_gm82c803ab.c
     sio_gm82c803c.c
     sio_f82c606.c

src/sio/sio_cbm_io.c

@@ -0,0 +1,112 @@
+/*
+ * 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 ACC 3221-SP Super I/O Chip.
+ *
+ *
+ *
+ * Authors: Sarah Walker, <https://pcem-emulator.co.uk/>
+ *
+ *          Copyright 2019 Sarah Walker.
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <86box/86box.h>
+#include <86box/io.h>
+#include <86box/timer.h>
+#include <86box/device.h>
+#include <86box/pci.h>
+#include <86box/lpt.h>
+#include <86box/serial.h>
+#include <86box/hdc.h>
+#include <86box/hdc_ide.h>
+#include <86box/fdd.h>
+#include <86box/fdc.h>
+#include <86box/sio.h>
+#include <86box/plat_unused.h>
+
+typedef struct cbm_io_t {
+    serial_t *uart;
+    lpt_t    *lpt;
+} cbm_io_t;
+
+static void
+cbm_io_write(UNUSED(uint16_t port), uint8_t val, void *priv)
+{
+    cbm_io_t *dev = (cbm_io_t *) priv;
+
+    lpt_port_remove(dev->lpt);
+
+    switch (val & 0x03) {
+        case 0x01:
+            lpt_port_setup(dev->lpt, LPT_MDA_ADDR);
+            break;
+        case 0x02:
+            lpt_port_setup(dev->lpt, LPT1_ADDR);
+            break;
+        case 0x03:
+            lpt_port_setup(dev->lpt, LPT2_ADDR);
+            break;
+
+        default:
+            break;
+    }
+
+    switch (val & 0x0c) {
+        case 0x04:
+            serial_setup(dev->uart, COM2_ADDR, COM2_IRQ);
+            break;
+        case 0x08:
+            serial_setup(dev->uart, COM1_ADDR, COM1_IRQ);
+            break;
+
+        default:
+            break;
+    }
+}
+
+static void
+cbm_io_close(void *priv)
+{
+    cbm_io_t *dev = (cbm_io_t *) priv;
+
+    free(dev);
+}
+
+static void *
+cbm_io_init(UNUSED(const device_t *info))
+{
+    cbm_io_t *dev = (cbm_io_t *) calloc(1, sizeof(cbm_io_t));
+
+    dev->uart = device_add_inst(&ns16450_device, 1);
+
+    dev->lpt  = device_add_inst(&lpt_port_device, 1);
+
+    io_sethandler(0x0230, 0x0001,
+                  NULL, NULL, NULL, cbm_io_write, NULL, NULL,
+                  dev);
+
+    return dev;
+}
+
+const device_t cbm_io_device = {
+    .name          = "Commodore CBM I/O",
+    .internal_name = "cbm_io",
+    .flags         = 0,
+    .local         = 0,
+    .init          = cbm_io_init,
+    .close         = cbm_io_close,
+    .reset         = NULL,
+    .available     = NULL,
+    .speed_changed = NULL,
+    .force_redraw  = NULL,
+    .config        = NULL
+};