From: bernhardheld <bernhardheld@4a8a32a2-be11-0410-ad9d-d568d2c75423>
Date: Sun, 26 Jan 2003 21:08:15 +0000 (+0000)
Subject: make RAM big enough for tinibios
X-Git-Url: https://git.gag.com/?p=fw%2Fsdcc;a=commitdiff_plain;h=6b5e433931b8b1ba61bb6c694f74f42f48c3acf5

make RAM big enough for tinibios


git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@2181 4a8a32a2-be11-0410-ad9d-d568d2c75423
---

diff --git a/ChangeLog b/ChangeLog
index 43cea7f0..ab67c49f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -13,6 +13,7 @@
 	* as/mcs51/Makefile.asx8051: new module strcmpi
 	* as/mcs51/Makefil.bcc: new module strcmpi
 	* as/mcs51/Makefile.in: new module strcmpi
+	* sim/ucsim/s51.src/uc390.cc (get_mem_size): make RAM big enough for tinibios
 
 2003-01-26    <johan@balder>
 
diff --git a/sim/ucsim/s51.src/uc390.cc b/sim/ucsim/s51.src/uc390.cc
index 80dda525..623d3915 100644
--- a/sim/ucsim/s51.src/uc390.cc
+++ b/sim/ucsim/s51.src/uc390.cc
@@ -390,9 +390,12 @@ t_uc390::get_mem_size (enum mem_class type)
   switch (type)
     {
       case MEM_ROM:
-        return 128*1024;	// 4*1024*1024; 4 Meg possible
+        return 128*1024;	  // 128 kByte; 4 MByte possible
       case MEM_XRAM:
-        return 128*1024;	// 4*1024*1024; 4 Meg possible
+	/* tinibios copies 128 bytes of the Interrupt Vector Table
+	   to 0x100000. This is exactly the minimum of memory to run ucSim
+	   without any error. */
+        return 1*1024*1024 + 128; // 1 MByte + 128 bytes; 4 Mbytes possible
       case MEM_IRAM:
         return 256;
       case MEM_SFR: