Add v0.7 source

src/acer386sx.c

@@ -0,0 +1,33 @@
+#include "ibm.h"
+#include "io.h"
+#include "cpu.h"
+
+#include "acer386sx.h"
+
+static int acer_index = 0;
+static uint8_t acer_regs[256];
+
+void acer386sx_write(uint16_t addr, uint8_t val)
+{
+        if (addr & 1)
+           acer_regs[acer_index] = val;
+        else
+           acer_index = val;
+}
+
+uint8_t acer386sx_read(uint16_t addr)
+{
+        if (addr & 1)
+        {
+                if ((acer_index >= 0xc0 || acer_index == 0x20) && cpu_iscyrix)
+                   return 0xff; /*Don't conflict with Cyrix config registers*/
+                return acer_regs[acer_index];
+        }
+        else
+           return acer_index;
+}
+
+void acer386sx_init()
+{
+        io_sethandler(0x0022, 0x0002, acer386sx_read, NULL, NULL, acer386sx_write, NULL, NULL);
+}