----------------------------------------------------------------------
Patch name: BIOS Int 15 Func D8 (EISA CMOS)
Author: Dirk Thierbach
Date: 4/30/2003
Status: new

Detailed description:

Patch was created with:
  cvs diff -u
Apply patch to what version:
  cvs checked out on DATE, release version VER
Instructions:
  To patch, go to main bochs directory.
  Type "patch -p0 < THIS_PATCH_FILE".
----------------------------------------------------------------------

--- rombios.c.ORIG	2003-04-29 23:31:20.000000000 +0200
+++ rombios.c	2003-04-30 00:11:48.000000000 +0200
@@ -3799,6 +3799,60 @@
 #endif
       break;
 
+    case 0xd8: /* EISA configuration */
+      /* Ralf's interrupt list http://www-2.cs.cmu.edu/~ralf/files.html
+       * gives a few more details about this interrupt. I haven't been
+       * able to find an in-depth description, but for example
+       *   http://docsrv.caldera.com/cgi-bin/man/man?eisa+D4
+       *   http://www.rcnp.osaka-u.ac.jp/unix/DOCUMENTATION/HTML/AA-Q0R6C-TET1_html/TOC.html
+       * give a few hints, though only in the context of writing unix device 
+       * drivers.
+       *
+       * For now, we just indicate empty slots. Shouldn't be a big difference
+       * from leaving it unimplemented, but who knows...
+       */
+      switch (regs.u.r8.al) {
+  	case 0x00: /* Read slot configuration information */
+  	case 0x80: /* Read slot configuration information, 32bit CS */
+	  BX_INFO ("int15: func=%04x slot=%02x, returning empty slot error\n", 
+		   (unsigned) regs.u.r16.ax, (unsigned) regs.u.r8.cl);
+  	  SET_CF();
+  	  regs.u.r8.ah = 0x83; /* empty slot */
+  	  break;
+  	case 0x01: /* Read function configuration information */
+  	case 0x81: /* Read function configuration information, 32bit CS */
+	  BX_INFO ("int15: func=%04x slot=%02x func=%02x, returning empty slot error\n", 
+		   (unsigned) regs.u.r16.ax, (unsigned) regs.u.r8.cl,
+		   (unsigned) regs.u.r8.ch);
+  	  SET_CF();
+  	  regs.u.r8.ah = 0x83; /* empty slot */
+  	  break;
+  	case 0x02: /* Clear nonvolatile memory (EISA CMOS) */
+  	case 0x82: /* Clear nonvolatile memory (EISA CMOS), 32bit CS */
+	  BX_INFO ("int15: func=%04x rev=%04x, returning success\n", 
+		   (unsigned) regs.u.r16.ax, (unsigned) regs.u.r16.bx);
+	  CLEAR_CF();
+  	  regs.u.r8.ah = 0x00; /* success */
+  	  break;
+  	case 0x03: /* Write nonvolatile memory */
+  	case 0x83: /* Write nonvolatile memory, 32bit CS */
+	  BX_INFO ("int15: func=%04x len=%04x, returning CMOS full error\n", 
+		   (unsigned) regs.u.r16.ax, (unsigned) regs.u.r16.cx);
+  	  SET_CF();
+  	  regs.u.r8.ah = 0x85; /* EISA CMOS full */
+  	  break;
+  	case 0x04: /* Read physical slot */
+  	case 0x84: /* Read physical slot, 32bit CS */
+	  BX_INFO ("int15: func=%04x slot=%02x, returning empty slot error\n", 
+		   (unsigned) regs.u.r16.ax, (unsigned) regs.u.r8.cl);
+  	  SET_CF();
+  	  regs.u.r8.ah = 0x83; /* empty slot */
+  	  break;
+  	default:
+	  goto int15_unimplemented;
+  	}
+      break;
+
     case 0xe8:
         switch(regs.u.r8.al)
         {