Initial submission of the PCem-Experimental source code.

src/intel.c

@@ -0,0 +1,81 @@
+#include "ibm.h"
+#include "cpu.h"
+#include "io.h"
+#include "mem.h"
+#include "pit.h"
+#include "timer.h"
+
+#include "intel.h"
+
+uint8_t batman_brdconfig(uint16_t port, void *p)
+{
+//        pclog("batman_brdconfig read port=%04x\n", port);
+        switch (port)
+        {
+                case 0x73:
+                return 0xff;
+                case 0x75:
+                return 0xdf;
+        }
+        return 0;
+}
+
+static uint16_t batman_timer_latch;
+static int batman_timer = 0;
+static void batman_timer_over(void *p)
+{
+        batman_timer = 0;
+}
+
+static void batman_timer_write(uint16_t addr, uint8_t val, void *p)
+{
+        if (addr & 1)
+                batman_timer_latch = (batman_timer_latch & 0xff) | (val << 8);
+        else
+                batman_timer_latch = (batman_timer_latch & 0xff00) | val;
+        batman_timer = batman_timer_latch * TIMER_USEC;
+}
+
+static uint8_t batman_timer_read(uint16_t addr, void *p)
+{
+        uint16_t batman_timer_latch;
+        
+        cycles -= (int)PITCONST;
+        
+        timer_clock();
+
+        if (batman_timer < 0)
+                return 0;
+        
+        batman_timer_latch = batman_timer / TIMER_USEC;
+
+        if (addr & 1)
+                return batman_timer_latch >> 8;
+        return batman_timer_latch & 0xff;
+}
+
+void intel_batman_init()
+{
+        io_sethandler(0x0073, 0x0001, batman_brdconfig, NULL, NULL, NULL, NULL, NULL, NULL);
+        io_sethandler(0x0075, 0x0001, batman_brdconfig, NULL, NULL, NULL, NULL, NULL, NULL);
+
+        io_sethandler(0x0078, 0x0002, batman_timer_read, NULL, NULL, batman_timer_write, NULL, NULL, NULL);
+        timer_add(batman_timer_over, &batman_timer, &batman_timer, NULL);
+}
+
+
+uint8_t endeavor_brdconfig(uint16_t port, void *p)
+{
+//        pclog("endeavor_brdconfig read port=%04x\n", port);
+        switch (port)
+        {
+                case 0x79:
+                return 0xff;
+        }
+        return 0;
+}
+
+void intel_endeavor_init()
+{
+        io_sethandler(0x0079, 0x0001, endeavor_brdconfig, NULL, NULL, NULL, NULL, NULL, NULL);
+}