Initial submission of the PCem-Experimental source code.

2016-06-26 00:34:39 +02:00
parent 09d7c4384f
commit fd2a5bc9f5
610 changed files with 184352 additions and 0 deletions
--- a/src/xtide.c
+++ b/src/xtide.c
@@ -0,0 +1,58 @@
+#include "ibm.h"
+
+#include "io.h"
+#include "ide.h"
+#include "xtide.h"
+
+uint8_t xtide_high;
+
+void xtide_write(uint16_t port, uint8_t val, void *priv)
+{
+        switch (port & 0xf)
+        {
+                case 0x0:
+                writeidew(0, val | (xtide_high << 8));
+                return;
+                
+                case 0x1: case 0x2: case 0x3:
+                case 0x4: case 0x5: case 0x6: case 0x7:
+                writeide(0, (port  & 0xf) | 0x1f0, val);
+                return;
+                
+                case 0x8:
+                xtide_high = val;
+                return;
+                
+                case 0xe:
+                writeide(0, 0x3f6, val);
+                return;
+        }
+}
+
+uint8_t xtide_read(uint16_t port, void *priv)
+{
+        uint16_t tempw;
+        switch (port & 0xf)
+        {
+                case 0x0:
+                tempw = readidew(0);
+                xtide_high = tempw >> 8;
+                return tempw & 0xff;
+                               
+                case 0x1: case 0x2: case 0x3:
+                case 0x4: case 0x5: case 0x6: case 0x7:
+                return readide(0, (port  & 0xf) | 0x1f0);
+                
+                case 0x8:
+                return xtide_high;
+                
+                case 0xe:
+                return readide(0, 0x3f6);
+        }
+}
+
+void xtide_init()
+{
+        ide_init();
+        io_sethandler(0x0300, 0x0010, xtide_read, NULL, NULL, xtide_write, NULL, NULL, NULL);
+}